JP2017049428A - Musical sound performance device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a karaoke device for obtaining an optimal effect influence according to a playing style without requiring user's manual operation.SOLUTION: The karaoke device has an HDD 49 for storing karaoke music data, reads to reproduce the karaoke music data, and inputs a performance signal according to a performance of an electric guitar 4 by a musical instrument player in accordance with the reproduction. The karaoke device also has distortion 61, a chorus 62 and reverb 63 for each providing desired effects to the performance signal, sets a parameter value indicating each strength/weakness of the effect influence to an initial value, detects the playing style of the performance on the basis of the performance signal, and increases or decreases each parameter value of the distortion 61, the chorus 62 and the reverb 63 from the initial value on the basis of the detection result.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a musical tone performance apparatus that performs various processes on performance signals based on musical instrument performance of a user.

  There is already known a technique in which a performance signal for playing a musical instrument of a user is input and various processes for improving the entertainment of the user are performed on the performance signal. For example, in the prior art described in Patent Document 1, when a user plays a stringed instrument in accordance with the reproduction of karaoke music, an appropriate effect effect (limiter) is applied to the performance signal by a plurality of internal effectors provided in the musical sound performance device. , Wah, etc.).

JP 2012-15585 A (paragraph [0034] etc.)

  By the way, generally, there are a wide variety of performance methods for stringed instruments (especially guitars). For example, a stroke playing method in which a plurality of notes that make up the chords of each chord are pronounced at the same time, an arpeggio playing method in which a plurality of notes that make up the chords of each chord are distributed, and each string is muted or chopped in a short time In order to emphasize the feeling of driving the music, the chord is played with a root sound and a sound that is 5 times higher than the root sound. There is a choking technique in which a string is flexed upward while being in contact with a fret, and the tone pitch is smoothly shifted to a higher side.

  These performance methods are greatly different from each other in the type of the effector and the degree of the effect that are optimum for each. However, it is very troublesome and inconvenient to change the selection of the internal effector and the setting of the effect effect by manual operation every time the user changes the playing style. In particular, when the performance method is changed during the performance of the music, or while the user is changing the effector settings, the user cannot perform the performance.

  An object of the present invention is to provide a musical sound performance device that can obtain an optimum effect effect according to a performance style while eliminating the need for manual operation by a user.

  In order to achieve the above object, the first invention includes music data storage means for storing karaoke music data including at least chord information composed of a plurality of chord progressions including a performance part of a predetermined stringed instrument, Musical string data reproducing means for reading out and reproducing the karaoke musical composition data stored in the musical composition data storage means, and according to the reproduction of the karaoke musical composition data by the musical composition data reproducing means, the stringed musical instrument is played by the instrument player. A performance signal input means for inputting a performance signal output from the performance signal, a plurality of internal effectors each for applying a desired effect to the performance signal input from the performance signal input means, and an effect effect in each of the plurality of internal effectors Parameter values indicating strength are determined in advance or the instrument Parameter setting means for setting an initial value desired by the player, performance method detecting means for detecting the performance method of the musical instrument player based on the performance signal input from the performance signal input means, and the performance method detection means Parameter increasing / decreasing means for increasing or decreasing the parameter value of each of the plurality of internal effectors from the initial value in accordance with the detection result of

  In the musical tone performance apparatus of the present invention, the karaoke music data stored in the music data storage means is read and reproduced by the music data reproducing means. At this time, in this invention, a user (musical instrument player) can play a musical instrument with reproduction | regeneration of karaoke music data, Furthermore, a desired effect effect can be provided with respect to the performance sound. That is, when a user plays a stringed instrument in accordance with the reproduction, a performance signal output from the stringed instrument is input through the performance signal input means, and appropriate effect effects can be applied to the performance signal by a plurality of internal effectors. it can.

  In the present invention, parameter setting means, rendition style detection means, and parameter increase / decrease means are provided. First, the parameter setting means sets a parameter value indicating the strength of the effect effect in each internal effector to an initial value (a value fixedly determined in advance or a value input by a user as desired). In this state, the performance style detection means detects a performance style in the performance of the user's stringed instrument based on the performance signal input from the performance signal input means. Then, the parameter increase / decrease means increases / decreases the parameter value of each internal effector (from the initial value) according to the detection result of the performance style detection means.

  As a result, for example, when a user performs an arpeggio, parameter values such as chorus and phaser increase, and a large fluctuation effect is given to the performance sound, and parameter values such as reverb or delay also increase. Great reverberation effect and echo effect are given to the performance sound. Also, for example, when a user performs a power chord technique, a parameter value such as distortion or overdrive increases and a greatly distorted sound is produced, and a parameter value such as chorus or phaser decreases to The effect of fluctuation can be suppressed to the minimum, and the drive feeling can be increased. Also, for example, when the user performs a choking technique, a parameter value such as distortion or overdrive increases and a greatly distorted sound is produced, and a parameter value such as reverb or delay increases and the performance sound increases. Reverberation effect and echo effect are given.

  As described above, in the present invention, it is possible to automatically obtain the optimum effect effect according to the playing style without performing a complicated manual operation by the user. Thereby, convenience and entertainment for the user can be greatly improved.

  According to a second aspect of the present invention, in the first aspect, the rendition style detection means is configured such that the performance of the musical instrument performer is: (i) each chord is a root sound and a sound having a pitch 5 degrees above the root sound. (Ii) Arpeggio playing method in which a plurality of sounds composing chords of each chord are sounded; (iii) After the sounding is started by picking the string, the string is brought into contact with the fret. It is detected that the performance method is any one of the choking performance method in which the sound pitch is smoothly shifted to a higher side while being bent upward.

  According to a third invention, in the second invention, the plurality of internal effectors include a first effector including distortion or overdrive for generating a distorted sound, and a chorus or a chord for giving a fluctuation effect to the sound. It comprises at least a second effector including a phaser and a third effector including reverb or delay for giving a reverberation effect or an echo effect to the sound.

  In a fourth aspect based on the third aspect, when the performance style detection means detects the power code performance style, the parameter increase / decrease means increases at least the parameter value of the first effector from the initial value. In addition, the parameter value of the second effector is decreased from the initial value.

  In a fifth aspect based on the third aspect, when the rendition style detection means detects the arpeggio performance style, the parameter increase / decrease means increases at least the parameter value of the second effector from the initial value. The parameter value of the third effector is increased from the initial value.

  In a sixth aspect based on the third aspect, when the rendition style detection means detects the arpeggio performance style, the parameter increase / decrease means increases at least the parameter value of the first effector from the initial value. The parameter value of the third effector is increased from the initial value.

  ADVANTAGE OF THE INVENTION According to this invention, the optimal effect effect according to the performance method can be acquired, making a user's manual operation unnecessary.

It is explanatory drawing which shows the main structures of the karaoke apparatus of one Embodiment of this invention. It is a functional block diagram which shows the main structures of the control system of the control apparatus with which the karaoke apparatus was equipped. It is explanatory drawing which shows an example of the data structure of the reception data from the server containing music data. It is explanatory drawing which shows an example of the display content displayed on a monitor at the time of reproduction | regeneration of music data. It is a functional block diagram showing the detailed function of CPU. It is a table showing an example of the increase / decrease control of the parameter value in each effector (distortion, chorus, reverb) with which an internal effector is equipped. It is explanatory drawing for demonstrating the increase / decrease method of the parameter value by the comparison with target pitch data and real pitch data when a user performs with the arpeggio performance method. It is explanatory drawing for demonstrating the increase / decrease method of the parameter value by the comparison with target pitch data and real pitch data when a user performs with a power chord performance method. It is explanatory drawing for demonstrating the increase / decrease method of the parameter value by the comparison with target pitch data and real pitch data when a user performs with the choking performance method. It is a flowchart which shows the processing content performed by CPU at the time of the music reproduction of a karaoke apparatus. It is a flowchart showing the detailed procedure of step S100.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a case will be described in which a user mainly plays an electric guitar by himself along with the performance of karaoke music.

<Main configuration>
FIG. 1 is an explanatory diagram showing a main configuration of a karaoke apparatus which is a musical tone performance apparatus of the present embodiment. As shown in FIG. 1, the karaoke apparatus 10 has a monitor television (hereinafter, abbreviated as a monitor) that displays a lyrics telop indicating lyrics, a background video displayed on the background of the lyrics telop, a video showing a music selection number, etc. on the CRT. 13, a user monitor 14, a musical instrument connection board 8 for connecting an electronic musical instrument such as an electric guitar 4 (corresponding to a predetermined stringed musical instrument) or an electric bass, and a plurality of musical instrument performance parts By selecting a song (karaoke song; hereinafter abbreviated as “song” as appropriate) and selecting a song to be reserved for playback, sending a request signal indicating a request to send the selected song to the server, and by request signal Communication control such as reception of music data (corresponding to karaoke music data) corresponding to the displayed music, and musical tone type designation information included in the received music data And a control unit 20 that performs for designating the same type of instrument sound source and an instrument connected to the instrument connection board 8 of the IDI data, are provided.

  Further, in this example, the karaoke apparatus 10 mixes a musical instrument performance signal inputted from the musical instrument connection board 8, a voice signal inputted from the microphones 17 and 18, and a music reproduction signal (shown in FIG. 2 described later). Mixing circuit 9), sound and music volume balance adjustment, echo adjustment, delay adjustment, mixing signal amplification, playback pitch control (key control), treble and bass control ( An amplifier 16 that performs tone control), a set of floor type speakers 11 and 11 that reproduce the amplified signal output from the amplifier 16 as sound, a set of speakers 12 and 12 for hanging the ceiling, And a remote controller 30 for remotely operating the control device 20. The remote controller 30 is provided with various operation buttons 30a and 30b.

  Although not shown, the musical instrument connection board 8 is connected to the output terminals (phone plugs) of the electronic drum, keyboard, electric bass, and electric guitar 4 (phone jacks; corresponding to performance signal input means); And output terminals for outputting performance signals inputted to the respective input terminals. The musical instrument connection board 8 automatically detects that each musical instrument is connected and the type of the musical instrument by connecting the output terminal of each musical instrument to the input terminal, and selects one performance signal of the connected musical instrument. The selected performance signal is output to an input terminal 44 (see FIG. 2 described later) of the control device 20. For example, a performance signal output from the electric guitar 4 is input to the musical instrument connection board 8 via a phone jack that connects a phone plug 4 a (see FIG. 2 described later) of the electric guitar 4, and is output from the output terminal of the musical instrument connection board 8. The output performance signal is input to the input terminal 44 of the control device 20. Note that instead of automatically detecting the connection and the type of the musical instrument as described above, the user may manually perform settings corresponding to the musical instrument already connected on the remote controller 30 or the like. In that case, instead of an electronic string instrument such as the electric guitar 4, an acoustically sounding guitar sound such as a gut guitar or a folk guitar may be collected by a microphone and input to the phone jack.

<Control system>
The configuration of the control system of the control device 20 will be described with reference to FIG. FIG. 2 is a functional block diagram showing the main configuration of the control system of the control device 20. The control device 20 includes a communication terminal 40 that connects the LAN line 15 to the device housing, an input terminal 44 that is connected to the output terminal of the musical instrument connection board 8, and an audio output terminal 41 that is connected to the audio input terminal of the amplifier 16. The video output terminal 42 connected to the video input terminal of the monitor 13 and the video output terminal 43 connected to the video input terminal of the monitor 14 are provided.

  The control device 20 is provided with a CPU 45 that executes various controls according to the control program. The CPU 45 includes a RAM 46 for temporarily storing data transmitted from the remote controller 30, music selection number data indicating the music selection number of the selected music, music selection number data of the reserved music, and a program executed by the CPU 45 ( A musical tone performance processing program for executing a flow shown in FIGS. 10 and 11 (to be described later) and a ROM 47 in which necessary data tables are stored are connected.

  Further, the CPU 45 has a video RAM 48 in which character video data for displaying lyrics telop and various message videos is stored on the monitors 13 and 14, music data transmitted from the server 70, chord score information / stave information (details) ), A LAN board 50 for receiving lyrics data and video data via the communication terminal 40, and a hard disk for temporarily storing music data and lyrics data received by the LAN board 50 (hereinafter referred to as “hard disk”). Simply referred to as “HDD”, which corresponds to music data storage means).

  Further, the CPU 45 is connected to a MIDI sound source board 51 that inputs MIDI data included in the song data read from the HDD 49 and outputs a sound source signal from a sound source specified by the input MIDI data. . The CPU 45 is connected to a sound control circuit 52 that inputs the output sound source signal and converts it into a signal that can be amplified by the amplifier 16.

  Further, general background video data read from the HDD 49, song-specific background data read from the HDD 49, lyrics telop data included in the song data, and the like are input to the CPU 45, and the display screen of the monitor 13 is displayed. A video control circuit 54 is connected to perform video control for creating a video in which the lyrics telop is superimposed on the background video displayed on the screen or changing the color of the lyrics telop as the music progresses.

  Further, the CPU 45 includes a conversion circuit 55 that converts an optical signal received from the light receiving unit 38 of the control device 20 into a digital signal, and various buttons and keys (tenkey, A display circuit 56 that outputs a display signal to the LED 58 that is turned on when the music selection button 59 is pressed, and an input circuit 57 that inputs a switching signal generated when the various buttons and keys are pressed are connected. .

  In addition, as one of the features of the present embodiment, the effector unit 60 is connected to the CPU 45. That is, generally, in an electronic musical instrument that outputs a performance sound in the form of an electric signal, such as the electric guitar 4, the sound that can be output independently has a limit in expressive power. Therefore, usually an effector is often used to compensate for this. Corresponding to this, the effector unit 60 is provided in the karaoke apparatus 10 of the present embodiment. The effector unit 60 can apply a desired effect to the performance sound output from the electronic musical instrument played by the user (the electric guitar 4 in the above example). In this example, distortion or overdrive for generating a distorted sound (corresponding to a first effector and an internal effector. In the following portion of the specification, and in FIG. 2 and the like, simply referred to as “distortion”) 61, A chorus or phaser or the like for imparting a fluctuation effect to the sound (corresponding to the second effector and the internal effector. In the following part of the specification and in FIG. 2 etc., it is simply referred to as “chorus”) 62, Reverb or delay for giving a reverberation effect or an echo effect (corresponding to a third effector and an internal effector, the following part of the specification, and simply referred to as “reverb” in FIG. 2 and the like) 63; At least. With this effector unit 60, it is possible to realize sounds of various kinds of electronic musical instruments as intended by the user.

<Basic operation of karaoke equipment>
In the karaoke apparatus 10 having the above basic configuration, when the user selects karaoke music including a performance part of the electric guitar 4 by the remote controller 30 and receives music data transmitted from the server 70 corresponding to the music selection, the music data is changed. Played. When a user (corresponding to a musical instrument player) plays the electric guitar 4 in accordance with the performance of the music data including the performance part of the electric guitar 4, the performance signal output from the electric guitar 4 is transmitted via the musical instrument connection board 8. The signal is input to the input terminal 44 of the control device 20, and an effect is appropriately applied by the effector unit 60. Then, in the sound control circuit 52, the sound source signal is output to the sound output terminal 41. In the case of the so-called minus one playback state, the audio control circuit 52 replaces a part of the musical guitar part of the sound source signal with the performance signal of the electric guitar 4 (effects applied by the effector unit 60). In the minus one reproduction state, it is output to the audio output terminal 41.

  At this time, in this embodiment, chord score information and staff score information for performance support in advance for the music data including the guitar performance part of the electric guitar 4 received from the server 70 together with the lyrics data and the video data (details will be described later). The chord score information or the staff score information is displayed together with the lyrics data and the video data by the monitors 13 and 14 when the music data is reproduced. Thereby, the user who is a performer easily performs the performance part of the electric guitar 4 by himself using the chord score information or the staff information displayed on the monitors 13 and 14 according to the karaoke music to be reproduced. Thus, it is possible to practice the electric guitar 4 and enjoy an ensemble of the entire karaoke music.

<Data structure>
FIG. 3 is an explanatory diagram showing a data structure of received data including music data received from the server 70 in the present embodiment. In the example shown in FIG. 3, four bars of karaoke music pieces of data received from the server are shown. The received data includes music data of a plurality of musical instrument performance parts (in this example, a guitar part, a bass part, and a drum part corresponding to the electric guitar 4) corresponding to the progress of the performance for four bars, the chord score information, The music score information, lyric data (lyric telop data), and video data are provided.

  The music data is reproduced from the first bar (hereinafter simply referred to as “first bar” or the like) in the data shown in FIG. 3 together with the lyrics data and the video data, and the second bar, the third bar, Playback proceeds to the fourth measure. Corresponding to the reproduction, display based on the lyrics data and the video data also proceeds.

<Cord score information>
The chord score information is associated with music data. In this example, the first bar in the figure is chord Em, the second bar is chord Bm7, the third bar is chord C, the fourth bar is The code Bm7, the fifth bar is the code Cmaj7, the sixth bar is the code Bm7, the seventh bar is the codes Am7 and Am7 / D, and the eighth bar is the code Gmaj9.

<Stave information>
The staff notation information represents the contents of the guitar part in a staff notation, and is associated with music data in the same manner as the chord notation information. In addition, the choking part which should perform the choking performance method mentioned later becomes the staff score (refer FIG. 9 mentioned later) of the content along the choking performance method. Details of the staff information will be described later. If the content is in accordance with the choking technique (that is, if the start pitch and the final pitch are clearly specified), other information (for example, TAB score information) may be used instead of the staff score information.

  When there are a plurality of types of music data, each music data corresponds to a music name (for example, music ID used for music selection described above), MIDI data for music performance, lyrics data, and chord data for performance support. Any data structure may be used. Since the music data structure is well known, only the necessary parts are shown in FIG.

  In this example, the chord score information and the staff information are composed of the same file as the music data. However, the present invention is not limited to this, and the chord score information and the staff information are separate files from the music data (hereinafter referred to as the chord music information file). Or a music score information file) and may be associated with the same music title.

For example, by the following configurations and processes (1) to (4), even if the chord score information and the staff information are separate from the music data (the chord score information file or the staff information file), the chord score information and the staff information are The same effect can be obtained as in the case of the same file as the music data.
(1) The chord score information file or the staff information file is a file of a table in which the chord information or the staff information that appears in accordance with the progress of the music data reproduction is associated with the progress time of the music in advance. Specifically, the table records information of (performance time t1: chord Em, t2: chord Bm,... Last performance time tX: last chord score X).
(2) The code information file or the staff information file is stored in the HDD 49 together with the music data.
(3) When the reproduction of the music is designated from the input circuit 57, the CPU 45 reads out the corresponding music score information file or the staff information file from the HDD 49 together with the music data.
(4) The CPU 45 reproduces the music data according to the execution program of the ROM 47, and reads out the chord information or the staff information from the chord information file or the staff information file according to the reproduction progress time.
Specifically, when the music data reproduction progress time reaches t1 (seconds), the code Em or the staff score corresponding to t1 is read from the code information file or the staff information file, and t2 (seconds) is read. Upon arrival, the code Bm or the staff score corresponding to t2 is read. Similarly, the chord score or the staff score corresponding to the progress time is continuously read from the chord score information file or the staff score information file until the music data reproduction ends (tX).

  FIG. 4 is an explanatory diagram showing an example of display contents displayed on the monitors 13 and 14 in correspondence with the chord score information when music data is reproduced. In this example, a display example corresponding to the music data for the first four bars of the one shown in FIG. 3 is shown. That is, the display contents of the monitors 13 and 14 are the above-mentioned lyrics for the four bars “I have to say that word” and the chord score attached to the upper side of the lyrics (first bar: Em, second bar: Bm7, 3 bars: C, 4th bar: Bm7), and a playback progress bar provided at the bottom of the lyrics for 2 bars. The reproduction progress bar is indicated by a black portion extending in a strip shape to indicate the progress of reproduction of the music data. The user of the electric guitar 4 looks at the chord score displayed on the monitors 13 and 14 when reproducing the music data, and presses the chords of the electric guitar 4 in the order of the chord progression corresponding to the extension state of the reproduction progression bar. You can easily play the electric guitar part of karaoke music.

  FIG. 4 (a) shows a state where the reproduction of the music data starting from the beginning of the first bar (code Em) is progressing to the middle of the first bar (immediately after the “no” part of the lyrics “that”). The black portion of the first reproduction progress bar extends partway through the first bar. In FIG. 4 (b), the reproduction further proceeds from the state of FIG. 4 (a), the first measure ends, and the middle part of the second measure (code Bm7) (“sa” of the lyrics “Even the word”). The black portion extends partway through the second bar. FIG. 4 (c) shows a state in which the reproduction further proceeds from the state of FIG. 4 (b) and the end of the second measure (the part after “E” of the lyrics “words”) is being reproduced. The black part extends to the end of the second bar.

<Features of this embodiment>
By the way, in general, stringed instruments (particularly the electric guitar 4) have a variety of performance methods. For example, a stroke playing method in which a plurality of notes that make up the chords of each chord are pronounced at the same time, an arpeggio playing method in which a plurality of notes that make up the chords of each chord are distributed, and each string is muted or chopped in a short time In order to emphasize the feeling of driving the music, the chord is played with a root sound and a sound that is 5 times higher than the root sound. There is a choking technique in which a string is flexed upward while being in contact with a fret, and the tone pitch is smoothly shifted to a higher side. In these performance methods, the optimum effector types (distortion 61, chorus 62, reverb 63 in the above example) and the degree of the effect of the effector 60 are greatly different from each other.

  Therefore, in the present embodiment, during the performance of the user, it is automatically determined to which of the above playing methods the performance content corresponds, and the distortion 61 and chorus 62 of the effector unit 60 are determined according to the determination result. The parameter value representing the strength of the effect of the reverb 63 is increased or decreased. Hereinafter, the details will be described in order.

<Performance detection>
In this embodiment, the chroma vector process is performed after the frequency component of the performance signal output by the user playing the electric guitar 4 is extracted by a known FFT (Fast Fourier Transform) technique, thereby obtaining a predetermined value. For each time segment, actual pitch data (details will be described later) corresponding to the performance is generated. The rendition method is detected based on the degree of coincidence between the actual pitch data and the target pitch data (details will be described later) generated based on the chord information and the staff information. The details will be described below with reference to FIGS.

<Detailed functions of CPU>
FIG. 5 shows a functional configuration of the CPU 45 of the present embodiment in order to perform the rendition style detection. As illustrated, the CPU 45 includes an FFT processing unit 45a, a feature parameter acquisition unit 45b, an actual data buffer 45c, a target data generation unit 45g, a target data buffer 45e, a matching processing unit 45d, an effector control signal generation unit 45f, and the like. Each functional unit is provided.

  The performance signal output by the user's performance of the electric guitar 4 and input to the control device 20 as described above is converted into digital data, and then input to the FFT processing unit 45a and the characteristic parameter acquisition unit 45b. The FFT processing unit 45a divides the performance audio data, which is the input sampling data sequence, into predetermined time segments (for example, 186 msec) and performs fast Fourier transform. The frequency spectrum obtained by the FFT is input from the FFT processing unit 45a to the feature parameter acquisition unit 45b.

  The characteristic parameter acquisition unit 45b receives the performance sound data and also receives a frequency spectrum that is frequency domain information from the FFT processing unit 45a. The characteristic parameter acquisition unit 45b acquires a plurality of characteristic parameters indicating various characteristics of the performance sound data from the performance sound data and its frequency spectrum, and the actual pitch corresponding to the acquired result by a known chroma vectorization technique. Data (data representing each sound included in the performance signal) is generated and output. This feature parameter is acquired in the frame for each time segment. Specifically, the feature parameter acquisition unit 45b includes a time domain information acquisition unit 45ba that calculates a time domain feature parameter from the input performance audio data and a frequency domain feature from the frequency spectrum input from the FFT processing unit 45a. A frequency domain information acquisition unit 45bb for determining parameters.

  The time domain information acquisition unit 45ba divides the input performance sound data into frames for each of the time segments synchronized with the FFT processing unit 45a, and acquires time domain feature parameters for each frame. Examples of characteristic parameters acquired by the time domain information acquisition unit 45ba include energy, energy change, duration, and the like. The frequency domain information acquisition unit 45bb acquires frequency domain feature parameters from the frequency spectrum of the waveform having the length of the time segment input from the FFT processing unit 45a. Examples of characteristic parameters acquired by the frequency domain information acquisition unit 45bb include, for example, pitch, harmonic frequency, harmonic level, harmonic phase, and the like.

The actual pitch data generated and output based on the characteristic parameters acquired by the time domain information acquisition unit 45ba and the frequency domain information acquisition unit 45bb as described above are input to the actual data buffer 45c. The actual data buffer 45c stores the input actual pitch data with time information (time stamp).

On the other hand, the chord score information and the staff information synchronized with the karaoke piece data are input to the target data generation unit 45g. Based on the chord score information and the notation information, the target data generation unit 45g sets target pitch data (in this embodiment, target pitch data for arpeggio performance, target pitch data for power chord performance, target pitch for choking performance) There are four types of data and normal performance target pitch data, details of which will be described later. This target pitch data is, for example, data corresponding to chords constituting a sound represented by staff information and a chord represented by chord information. The generated target pitch data is output to the target data buffer 45e and stored in the target data buffer 45e.

  The matching processor 45d compares the actual pitch data stored in the actual data buffer 45c as described above with the corresponding target pitch data stored in the target data buffer 45e by a known method. The degree of coincidence is calculated numerically, for example, by calculation. Then, based on whether or not the calculated degree of coincidence is equal to or greater than a predetermined threshold value (for example, 70%), the performance method of the electric guitar 4 is determined (in other words, the performance method is detected). The determination result is output to the effector control signal generation unit 45f. Instead of calculating the degree of coincidence by calculation as described above, a table is prepared in which the degree of coincidence is assigned to each section in advance, and the comparison result is The degree of coincidence may be determined depending on which section of the table it belongs to.

  The effector control signal generation unit 45f is based on the rendition style detection result input from the matching processing unit 45d, in each effector (distortion 61, chorus 62, reverb 63 in the above example) provided in the effector unit 60. An increase process or a decrease process of the parameter value of each effector is determined so as to be suitable for the detected performance style, and a corresponding effector control signal is generated. The effector control signal generation unit 45f outputs the generated effector control signal to the effector unit 60.

<Increase / decrease effector parameter value>
An example of the increase / decrease of the parameter value in each effector (distortion 61, chorus 62, reverb 63) realized in the effector 60 by the effector control signal from the effector control signal generator 45f is shown in FIG. Each numerical value [%] in the table is set by the user manually (or fixedly set as default) before the performance is started, and the parameter values of the distortion 61, the chorus 62, and the reverb 63 ( The degree of increase / decrease with respect to “parameter initial value”) is expressed as a percentage as appropriate.

  As shown in the figure, when the performance method determined by the matching processing unit 45d is an arpeggio performance method, the parameter value of the chorus 62 depends on the effector control signal from the effector control signal generation unit 45f. The parameter value of the reverb 20 is increased by 20% from the initial parameter value. Note that the parameter value of the distortion 61 is maintained as it is (± 0) without increasing or decreasing from the initial parameter value. Thereby, for example, the spread of the sound increases in a backing performance using distributed chords, and a beautiful ensemble with other performance parts can be realized.

  When the performance method determined by the matching processing unit 45d is a power code performance method, the parameter value of the distortion 61 is set to the parameter initial value according to the effector control signal from the effector control signal generation unit 45f. The parameter value of the chorus 62 is reduced by 30% from the initial parameter value. The parameter value of the reverb 63 is maintained as it is (± 0) without increasing or decreasing from the parameter initial value. As a result, for example, in a backing performance with rock-type karaoke music, it is possible to realize a sharp performance with a sharply distorted sound and to increase driving feeling.

  When the performance method determined by the matching processing unit 45d is a choking performance method, the parameter value of the distortion 61 is determined from the parameter initial value according to the effector control signal from the effector control signal generation unit 45f. The parameter value of the reverb 63 is increased by 80% from the initial parameter value. The parameter value of the chorus 62 is maintained as it is (± 0) without increasing or decreasing from the parameter initial value. Thereby, for example, in the performance of a guitar solo part as an interlude of karaoke music, it is possible to realize a guitar solo that resonates brilliantly with a sound that is moderately distorted and has a feeling of reverberation.

  The parameter value increase / decrease control shown in FIG. 6 is performed by a method of setting the increase / decrease degree relative to the parameter initial value relatively, but is not limited thereto. For example, the absolute value of each parameter that is fixedly set in advance may be forcibly set regardless of how much the parameter initial value is. For example, in the case of the arpeggio playing method, when the parameter value of the chorus 62 is expressed by numerical values “0” to “20”, the parameter initial value is “0” even if it is “5”. However, when the parameter value of the reverb 20 is expressed by numerical values “0” to “20”, for example, when the parameter initial value is “0”, the control value is uniformly relatively large “14”. Even if it is “5”, it may be controlled to “4” uniformly.

<Details of the target data generator>
In the present embodiment, in order to detect what kind of rendition is performed by the user, the target data generating unit 45g includes arpeggio rendition target pitch data 45g1, power code rendition target pitch data. A generating unit 45g2, choking performance target pitch data 45g3, and normal performance target pitch data 45g4 are provided. The chord score information and the staff score information to be inputted are associated in advance with performance style information indicating which performance style of the various performance styles should be played for each appropriate performance section of the karaoke piece data. The arpeggio performance target pitch data 45g1, the power chord performance target pitch data generation unit 45g2, and the choking performance target pitch data for each performance section according to the progress of the song by the reproduction of the karaoke music. Either of 45g3 and normal performance style target pitch data 45g4 is selectively used, and target pitch data for each corresponding performance style is generated and stored in the target data buffer 45e.

<Arpeggio performance target data>
The arpeggio performance target data generation unit 45g1 generates target pitch data based on the chord score information, which is generated by distributing the sounds of the chords of each chord included in the chord score information over time. Is done. As for how to disperse each sound constituting the chord (which sound is generated in which order and at which timing), one typical type may be used in a fixed manner, or a plurality of types may be prepared. The matching processing unit 45d may determine whether any one of them is applicable, or the matching processing unit 45d may determine whether the sound constitutes a chord regardless of the order. May be.

<Target data for power code performance>
In the power chord performance target data generation unit 45g2, a target pitch composed of a power chord composed of a root sound of each chord included in the chord score information and a sound having a pitch 5 degrees higher than the root sound. Data is generated based on the chord score information.

<Target data for choking techniques>
In the choking performance target data generation unit 45g3, when the electric guitar 4 plays a single note, after the sounding is started by picking the string, the string is bent upward while keeping the string in contact with the fret so that the sounding pitch is smoothed to the higher side. The target pitch data consisting of the performance method (choking performance method) to be transferred to is generated based on the staff information.

<Specific examples of rendition style detection and parameter increase / decrease>
Next, specific examples of detection of the playing method of the user's electric guitar 4 by the above-described method and increase / decrease of parameters of each effector corresponding to the detection result will be described with reference to FIGS.

<Detection of arpeggios>
As described above, for the section of the karaoke piece in which the performance by the arpeggio performance is specified by the performance information, the matching processing unit 45 uses the arpeggio performance target data generation unit 45g1 for the arpeggio performance method. Detection of the arpeggio performance is performed by comparing the target pitch data with the actual pitch data (performed by the user with the arpeggio).

  7, in this example, the music is reproduced by the chord progression in the order of the first measure of chord Em, the second measure of chord Bm7, etc., in the song data shown in FIGS. 3 and 4 above. In this state, the user plays the electric guitar 4 in accordance with the reproduction.

  As described above, the target pitch data corresponding to the chord progression as described above is data in which chords constituting each chord are distributed over time and sounded. That is, in correspondence with the above-mentioned performance information, the 6th string 0th fret → 4th string 2nd fret → 3rd string 0th fret → 1st string 0th fret → 2 so that each chord constituting the chord Em is pronounced in the third measure. The pitch to be generated is specified by the fingering mode in the order of string 0 fret → 3 string 0 fret. Similarly, in the 4th measure, the 5th string, 2nd fret, 4th string, 4th fret, 3rd string, 2nd fret, 1st string, 2nd fret, 2nd string, 3rd fret, 3rd string, 2nd fret so that each chord constituting chord Bm7 is pronounced. The pitch that is pronounced by the fingering mode of the order is specified.

  Then, in the first bar to the second bar, the frequency components are extracted by the FFT process and the chroma vector process is performed as described above based on the performance signal of the performance of the electric guitar 4 by the user. High data is being generated. In this example, by playing the electric guitar 4 by the user, the chord Em of the first measure is 6th string 0th fret → 4th string 2th fret → 3rd string 0th fret → 1st string 0th fret → 2th string 0th fret → 2 Data of pitches generated by the fingering mode in the order of the string 0 fret is generated from the input performance signal. The chord Bm7 of the second measure is sounded in the order of fingering in the order of 5th string, 2nd fret, 4th string, 4th fret, 2nd string, 3rd fret, 1st string, 2nd fret, 2nd string, 3rd fret, 3rd string, 2nd fret. The pitch data is generated from the input performance signal.

  Here, in the present embodiment, for example, if the degree of coincidence by comparison between target pitch data and actual pitch data in about one half of one measure is equal to or higher than a predetermined threshold (for example, 70%), It is determined that the electric guitar 4 has been played according to the playing method specified by the playing method information. In addition, the performance method determination is not limited to the above-described performance method determination method based on the pronunciation of about 1/2 of one measure, and the performance method determination is further performed based on the degree of coincidence calculated with a more limited number of pronunciations (for example, only the first one pronunciation in one measure). You may go quickly.

  In the illustrated example, the target pitch data and the actual pitch data are completely the same in the first half of the first measure. Thereby, it is determined that the playing method of the electric guitar 4 by the user at this time is the arpeggio playing method. As a result, in the subsequent steps (in this example, the second half of the first measure and the second measure), as shown in the figure, the parameter value of the chorus 62 increases by 70% with respect to the parameter initial value. The parameter value of the chorus reverb 63 becomes the value of the parameter initial value ratio of 120% (see also FIG. 6 described above). The parameter value of the distortion 61 is maintained at the parameter initial value ratio of 100%.

  In this example, as described above, at the 4th beat of the first measure, the 2nd string 0th fret is pressed in the actual pitch data, whereas the 3rd string 0th fret is specified in the target pitch data, resulting in inconsistent data. ing. However, the effector parameter value has already been switched in the middle of the first measure, and the presence of the mismatch data does not affect the switched parameter value (mismatch data at the second beat second beat). The same applies to.

<Detection of power code performance>
As described above, the power code generated by the power code performance method target data generation unit 45g2 in the matching processing unit 45 for the section of the karaoke music in which the performance by the power code is specified by the performance method information. The power chord playing method is detected by comparing the performance pitch target pitch data with the actual pitch data (performed by the user using the power chord).

  8, in this example, the music is reproduced by the chord progression in the order of the third measure of chord C, the fourth measure of chord Bm7, etc., in the song data shown in FIGS. 3 and 4 above. In this state, the user plays the electric guitar 4 in accordance with the reproduction.

  As described above, the target pitch data corresponding to the chord progression as described above is power chord data including the root sound of each chord and a sound that is 5 degrees above the root sound. ing. In other words, in accordance with the above-mentioned performance information, the pitch that is pronounced in the third measure by the fingering mode of pressing the chord C at two locations of the 4-string 5-fret and 5-string 3-fret is designated. Has been. Similarly, in the fourth measure, a 4-string 4-fret and a 5-string 2-fret are designated for the chord Bm7.

  Then, in the third to fourth measures, the frequency component extraction and the chroma vector processing by the FFT processing are performed as described above on the basis of the performance signal by the performance of the electric guitar 4 by the user. High data is being generated. In this example, as a result of the user's performance of the electric guitar 4, the pitch of the third measure of chord C is pronounced in a fingering manner in which two chords of four strings and five frets are pressed. Are generated from the input performance signal. For chord C of the 4th measure, after the fingering mode of pressing the 4th string 5th fret and the 5th string 3rd fret, the 4th string 4th fret and the 5th string 2nd fret Data of pitches generated by the fingering mode to be pressed is generated from the input performance signal.

  In the illustrated example, the target pitch data and the actual pitch data are completely the same in the first half of the third measure. Thus, as described above, it is determined that the playing method of the electric guitar 4 by the user at this time is the power chord playing method. As a result, from this point onward (in this example, the second half of the third measure and the fourth measure), as shown in the figure, the parameter value of the distortion 61 corresponds to the previous arpeggio performance method. The parameter initial value ratio is increased from 100% to the parameter initial value ratio of 150% (see also FIG. 6). Further, the parameter value of the chorus 62 is reduced from the parameter initial value ratio 170% (corresponding to the arpeggio playing method) so far to the parameter initial value ratio 70%. The parameter value of the reverb 63 is reduced from the previous parameter initial value ratio of 120% (corresponding to the arpeggio playing method) to the parameter initial value ratio of 100% (returns to the parameter initial value).

  In this example, as described above, in the first beat of the fourth measure, the 4th string 4th fret and the 5th string 2nd fret are designated in the target pitch data, while the 4th string 5th fret is specified in the actual pitch data. And the 3rd fret of the 5th string is pressed, and this is the only discrepancy data. However, the effector parameter value has already been switched in the middle of the third measure, and the presence of this mismatch data does not affect the switched parameter value.

<Detection of choking technique>
As described above, for the section of the karaoke piece in which the performance based on the choking performance is specified by the performance information, the matching processing unit 45 uses the choking performance method generated by the choking performance target data generation unit 45g3. The choking performance is detected by comparing the target pitch data with the actual pitch data (performed by the user with the choking performance).

  9, in this example, in the music data shown in FIGS. 3 and 4, the above-mentioned fifth measure of the code Cmaj7, the sixth measure of the chord Bm7, the seventh measure of the chords Am7 and Am7 / D, the chord This shows a state in which music is played in the progression of chords in the order of eighth measure of Gmaj9 and the user plays the electric guitar 4 in accordance with the playback.

  The target pitch data of the fifth bar to the eighth bar is for generating a “B” sound corresponding to the 7th fret of the first string of the first beat in the fifth bar, corresponding to the above-mentioned performance information. In addition, after the sound of “A” corresponding to the 6th fret of the 1st string is started, the pitch is changed to the above “B” by the choking technique for one sound (see “cho.” In the figure, the same applies hereinafter). The performance method to raise to the sound of is specified. In addition, in order to sound the “E” sound corresponding to the 5th fret of the 2nd string of the 4th beat, the sound is started with the sound “D” corresponding to the 3rd fret of the 2nd string. ”Is specified to increase.

  Similarly, in the sixth measure, in order to generate the sound “D” corresponding to the 7th fret of the 3rd string of the first beat, the sound is started with the sound “C” corresponding to the 5th fret of the 3rd string, and the same as above. Is specified to raise the pitch to the above "D" sound. In addition, in order to generate the sound of “B” corresponding to the 7th fret of the 1st string of the 3rd beat, after the start of sound generation by the sound of “A” corresponding to the 5th fret of the 1st string, the pitch is changed to the above “B”. ”Is specified to increase.

  Similarly, in the seventh measure, in order to generate the sound of “A” corresponding to the 5th fret of the 1st string of the first beat, the sound is started with the sound of “G” corresponding to the 3rd fret of the 1st string, and the same as above. Is specified to raise the pitch to the above-mentioned “A” sound. In addition, in order to generate the “C” sound corresponding to the 5th fret of the 3rd string of the 4th beat, after the start of the sound “B” corresponding to the 4th fret of the 3rd string, the pitch is changed to “C” in the same manner as described above. ”Is specified to increase.

  Similarly, in the 8th measure, in order to generate a sound of “B” corresponding to the 4th fret of the 3rd string, after the start of the sound “A” corresponding to the 2nd fret of the 3rd string, Is designated to be raised to the sound "B".

  In the fifth to eighth measures, the frequency components are extracted by the FFT process and the chroma vector process is performed as described above based on the performance signal obtained by the user playing the electric guitar 4. High data is being generated. In this example, when the user plays the electric guitar 4, in the fifth measure, "A" corresponding to the first string 6th fret "B" corresponding to 7th fret "B", "D" corresponding to the 2nd string 3rd fret "E" corresponding to 5th fret. The pitch data is generated from the input performance signal. In the sixth measure, pitch data of “C” equivalent to 3rd string and 5th fret “D” → corresponding to 7th fret “D”, 1st string corresponding to 5th fret “A” → 7th fret equivalent “B” is obtained from the inputted performance signal. Has been generated. In the seventh measure, pitch data of "F #" equivalent to 1st string 2nd fret "G" → 3rd fret equivalent "G", 3rd string 4th fret equivalent "B" → 5th fret equivalent "C" is input as the performance signal Is generated from. In the eighth measure, pitch data from “A” corresponding to the third string and second fret to “B” corresponding to the fourth fret is generated from the inputted performance signal.

  In the illustrated example, the target pitch data and the actual pitch data are completely the same in the first half of the fifth measure. Thus, as described above, the playing method of the electric guitar 4 by the user at this time is determined to be the choking playing method. As a result, in the subsequent steps (in this example, the second half of the fifth measure and the sixth to eighth measures), as shown in the figure, the parameter values of the distortion 61 correspond to the above-described power code performance method. The parameter initial value ratio is reduced from 150% to the parameter initial value ratio of 130% (see also FIG. 6 described above). Also, the parameter value of the chorus 62 is increased from the parameter initial value ratio of 70% (corresponding to the power chord playing method) so far to the parameter initial value ratio of 100%. Further, the parameter value of the reverb 63 is increased from the parameter initial value ratio of 100% (corresponding to the power code playing method) so far to the parameter initial value ratio of 180%.

  In this example, as described above, at the first beat of the seventh measure, the actual pitch is in response to the designation of “G” corresponding to the 1st string and 3rd fret to “A” corresponding to the 1st string and 5th fret in the target pitch data. In the data, “F #” corresponding to the 1st string 2nd fret → “G” corresponding to the 3rd fret, and only this is the mismatch data. However, the effector parameter value has already been switched in the middle of the fifth measure, and the presence of this mismatch data does not affect the switched parameter value.

<Control procedure>
In order to realize the method of the present embodiment as described above, processing contents executed by the CPU 45 when the karaoke apparatus 10 plays back music will be described with reference to a flowchart of FIG.

  In FIG. 10, this flow is started when, for example, the user of the karaoke device 10 presses the power button of the control device 20 to turn on the control device 20. In conjunction with the rising of the power supply of the control device 20, the power supply of the amplifier 16, the musical instrument connection board 8 and the monitors 13, 14 is started up. As described above, in this example, the case where the user of the karaoke apparatus 10 performs by connecting the electric guitar 4 to the musical instrument connection board 8 will be described. When the user connects the phone plug of the electric guitar 4 to the input terminal (phone jack) of the musical instrument connection board 8, the musical instrument connection board 8 detects that the electric guitar 4 is connected.

  In FIG. 10, first, in step S5, the CPU 45 determines whether or not the music selection by the user has been completed. In the music selection, for example, when the user inputs the music selection number of the music that he / she wants to play the electric guitar 4 with the numeric keypad of the remote controller 30 and presses the music selection button, the music selection ends. Until the music selection is completed, the determination in step S5 is not satisfied (step S5: NO), and a loop is waited for. When the music selection is completed, the determination in step S5 is satisfied (step S5: YES), and the process proceeds to step S10.

  In step S <b> 10, the CPU 45 accepts the magnitude setting (parameter initial value) of the parameter value of each effector (distortion 61, chorus 62, reverb 63) of the effector unit 60 by the user via the button and key 59, for example. At the same time, the parameter values of each effector are set as received. The CPU 45 that executes the procedure of step S10 functions as parameter setting means described in each claim. Thereafter, the process proceeds to step S15.

  In step S15, the CPU 45 temporarily stores the music selection number data indicating the music selection number in the RAM 46 corresponding to the music selection result in step S5, and transmits the music data corresponding to the music selection number via the LAN board 50. A request signal to be requested is transmitted to the server 70 via the LAN line 15. Accordingly, the server 70 stores, from a storage device (not shown), music data corresponding to the music selection number indicated in the request signal, the chord music information, and the staff information, and lyrics data and video data corresponding to the music data. Is retrieved and read, and the read music data and the like are transmitted to the control device 20 via the LAN line 15. When step S15 ends, the process proceeds to step S20.

  In step S20, the CPU 45 receives music data (including chord score information and staff information) transmitted from the server 70 via the LAN line 15 via the LAN board 50. Thereafter, the process proceeds to step S25.

  In step S25, the CPU 45 temporarily stores the music data received in step S20 in the HDD 49. Thereafter, the process proceeds to step S30.

  In addition, as a process of step S15, step S20, and step S25, the music data matched with the music selection number, chord music / stave music information, and the like are acquired on demand from the server 70 for each music selection. In addition, music data and the like are stored in advance in a large-capacity auxiliary storage means (such as the HDD 49) in the control device 20 of the karaoke apparatus 10, and music data (MIDI data) associated with the music selection number for each music selection, and A process corresponding to step S15, step S20, or step S25 may be performed in which an information group such as chord score / stave score information corresponding to the music data is read from the auxiliary storage unit and the target information is acquired.

  In step S30, the CPU 45 starts reading the MIDI data, which is the music data stored in the HDD 49 in step S25, and writes the read MIDI data to the MIDI tone generator board 51. When step S30 ends, the process proceeds to step S35.

  In step S35, the CPU 45 outputs a control signal to the MIDI sound source board 51 and causes the MIDI sound source board 51 to output a sound source signal corresponding to the MIDI data written in step S30. The sound source signal output from the MIDI sound source board 51 is output to the sound control circuit 52 and converted into a music signal that can be amplified by the amplifier 16, and the converted music signal is transmitted from the sound output terminal 41 to the amplifier 16. Is output. Also, the audio signal input from the microphones 17 and 18 is mixed with the music signal in the mixing circuit 9 built in the amplifier 16. At this time, the performance signal output from the phone plug 4a of the electric guitar 4 is input to the mixing circuit 9 via the musical instrument connection board 8 and the control device 20, and is mixed with the audio signal and the music signal. The mixed signal thus mixed is amplified by an amplifier circuit (not shown) built in the amplifier 16 and then output to the speaker 11 and the speaker 12 and reproduced by both speakers. The CPU 45 executing the procedure of step S35 functions as music data reproducing means described in each claim. When step S35 ends, the process proceeds to step S40.

  In step S40, the CPU 45 outputs a control signal to the monitors 13 and 14, and causes the monitors 13 and 14 to display the chord score information (or staff score information), lyrics, etc. stored in step S25. Thereby, the user who is a player of the electric guitar 4 plays the electric guitar according to the karaoke music to be reproduced by playing the electric guitar 4 according to the chord score (or the staff score) displayed on the monitors 13 and 14. Part can be played easily. Thereafter, the process proceeds to step S50.

  In step S50, the CPU 45 stores the performance signal input from the input terminal 44 by the performance of the user's electric guitar 4 as performance data, for example, in the HDD 49. Thereafter, the process proceeds to step S55.

  In step S55, the CPU 45 determines whether or not one time segment corresponding to the FFT (Fast Fourier Transform) processing unit has been completed. If the time segment has not ended, the determination is not satisfied (S55: NO), and the process returns to step S30 and the same procedure is repeated. When the time segment ends, the determination is satisfied (S55: YES), and the routine goes to Step S100.

  In step S100, the CPU 45 performs effector control processing by the above-described method. Details of the effector control processing are shown in FIG.

  In FIG. 11, first, in step S110, the CPU 45 reads out the performance data accumulated in step S50 (corresponding to the one category), and the FFT processing unit 45a uses a known FFT (fast Fourier transform) technique. Each frequency component is extracted and analyzed. Thereafter, the process proceeds to step S120.

  In step S120, the CPU 45 generates the above-described actual pitch data by converting the analysis result in step S110 into a chroma vector by a known method by the feature parameter acquisition unit 45b. Thereafter, the process proceeds to step S130.

  In step S130, based on the above-described performance style information, the CPU 45 performs the target data generation section 45g (specifically, the arpeggio performance target pitch data 45g1, the power code performance target pitch data generation section 45g2, the choking performance target). Based on the chord score information / stave score information acquired in step S20 and displayed in step S40 based on the pitch data 45g3 and the target pitch data 45g4 for normal performance style) Corresponding target pitch data is selectively generated and stored in the target data buffer 45e. Thereafter, the process proceeds to step S140.

  In step S140, the CPU 45 compares the target pitch data generated in step S130 with the corresponding actual pitch data generated in step S120 by the matching processing unit 45d, and calculates the degree of coincidence. Then, based on whether or not the degree of coincidence is equal to or higher than the threshold value (for example, 70%), the performance method when the electric guitar 4 is actually played is determined (that is, the performance method is detected). Thereafter, the process proceeds to step S150. The CPU 45 that executes step S140 functions as a performance style detection unit.

  In step S150, the CPU 45 realizes increase / decrease (see FIG. 6) of parameter values of each effector (distortion 61, chorus 62, reverb 63) corresponding to the playing method of the electric guitar 4 detected in step S140. The effector control signal is generated and output to the effector unit 60. The CPU 45 that executes step S150 functions as a parameter control unit.

  Returning to FIG. 10, when step S150 is completed, the CPU 45 finishes reproducing the music data in step S65 (in other words, reading of the MIDI data in step S30 is completed up to the last MIDI data of the music data). Determine whether or not. If the reproduction of the music data is finished, the determination is satisfied (step S65: YES), and this flow is finished. Until the reproduction of the music data is completed, the determination is not satisfied (step S65: NO), the process returns to step S30, and the procedure of steps S30 to S65 is repeated.

<Effect of embodiment>
As described above, in the present embodiment, first, the parameter values in each effector (distortion 61, chorus 62, reverb 63) of the effector unit 60 are determined according to the user's manual operation of various buttons and keys 59. Set to the initial value. After that, based on the performance signal input from the electric guitar 4, the performance method in the performance of the user's electric guitar 4 is detected. Then, the parameter value of each effector (distortion 61, chorus 62, reverb 63) is increased or decreased (from the initial value) in accordance with the detection result of the performance method.

  Specifically, as shown in FIGS. 6 and 7, when the user performs the arpeggio, the parameter values such as chorus and phaser are increased, and the performance sound is greatly fluctuated. A parameter value such as reverb or delay is increased, and a large reverberation effect or echo effect is given to the performance sound. Also, as shown in FIGS. 6 and 8, when the user performs the power chord performance method, the parameter value such as distortion or overdrive is increased and a greatly distorted sound is generated, and a chorus, a phaser, etc. Thus, the parameter value can be reduced and the effect of fluctuation on the performance sound can be suppressed to the minimum, and the drive feeling can be increased. Also, as shown in FIGS. 6 and 9, when the user performs the choking technique, a parameter value such as distortion or overdrive increases, and a greatly distorted sound is generated, and a reverb or delay or the like is generated. The parameter value also increases, and a large reverberation effect or echo effect is given to the performance sound.

  As described above, in this embodiment, it is possible to automatically obtain the optimal effect effect according to the playing style without performing a complicated manual operation by the user. Thereby, convenience and entertainment for the user can be greatly improved.

  In the above description, the actual performance of the electric guitar 4 is detected by the user based on the degree of coincidence between the target pitch data and the actual pitch data, but is not limited thereto. That is, the rendition style detection may be performed using only the actual pitch data without using the target pitch data. In this case, each frequency component is extracted from the actual pitch data by a known FFT (Fast Fourier Transform) method and analyzed, and the content after the analysis is the sound produced by the arpeggio playing method, the sound produced by the power code playing method. What is necessary is just to determine whether it corresponds to the pronunciation by the above choking performance.

  In addition, in the above, the arrow shown in each figure of FIG. 5 etc. shows an example of the flow of a signal, and does not limit the flow direction of a signal.

In addition, the flowcharts shown in FIGS. 10 and 11 do not limit the present invention to the procedure shown in the above flow, and the addition and deletion of the procedure, the change of the order, etc. are within the scope not departing from the gist and technical idea of the invention. You may do.
Specifically, in order to implement the invention, it is only necessary to have chord score / stave information corresponding to the music data for detecting the playing method of the electric guitar 4, so the music data is not a MIDI data but a raw sound (PCM). ) No problem with data.

  In addition to those already described above, the methods of the above-described embodiments and modifications may be used in appropriate combination.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

4 Electric guitar (stringed instrument)
10 Karaoke equipment (musical performance equipment)
49 HDD (music data storage means)
61 Distortion (first effector, internal effector)
62 Chorus (second effector, internal effector)
63 Reverb (third effector, internal effector)

Claims (6)

Song data storage means for storing karaoke song data including at least chord information consisting of progression of a plurality of chords, including a performance part of a predetermined string instrument;
Music data reproducing means for reading out and reproducing the karaoke music data stored in the music data storage means;
A performance signal input means for inputting a performance signal output from the stringed instrument by a performance of the stringed instrument by a musical instrument player according to the reproduction of the karaoke music data by the music data reproducing means;
A plurality of internal effectors each applying a desired effect to the performance signal input from the performance signal input means;
Parameter setting means for setting a parameter value indicating the strength of the effect effect in each of the plurality of internal effectors to a predetermined or initial value desired by the instrument player;
Based on the performance signal input from the performance signal input means, a performance style detection means for detecting a performance style of the musical instrument player;
In accordance with the detection result by the rendition style detection means, parameter increase / decrease means for increasing / decreasing the parameter value of each of the plurality of internal effectors from the initial value;
A musical performance device characterized by comprising: In the musical sound performance device according to claim 1,
The rendition style detection means includes:
The performance of the instrument player is
(I) A power chord method in which each chord is pronounced with a power chord composed of a root sound and a sound that is five times higher than the root sound;
(Ii) an arpeggio playing method in which a plurality of sounds constituting a chord of each chord are distributed and pronounced;
(Iii) A choking technique in which after the start of sound generation by picking on a string, the string is bent upwards while in contact with the fret, and the sound pitch is smoothly shifted to the higher side;
A musical performance device characterized by detecting that the performance method is any of the above. In the musical sound performance device according to claim 2,
The plurality of internal effectors are
A first effector including distortion or overdrive for producing a distorted sound;
A second effector including a chorus or a phaser for imparting a fluctuation effect to the sound;
A third effector including a reverb or delay for giving a sound a reverberation effect or an echo effect;
A musical tone performance apparatus comprising at least In the musical sound performance device according to claim 3,
When the rendition style detection means detects the power code performance style, the parameter increase / decrease means increases at least the parameter value of the first effector from the initial value and increases the parameter value of the second effector. A musical performance device characterized by being reduced from an initial value. In the musical sound performance device according to claim 3,
When the rendition style detection means detects the arpeggio performance style, the parameter increase / decrease means increases at least the parameter value of the second effector from the initial value and sets the parameter value of the third effector to the initial value. A musical performance device characterized by increasing from the value. In the musical sound performance device according to claim 3,
When the rendition style detection means detects the arpeggio performance style, the parameter increase / decrease means increases at least the parameter value of the first effector from the initial value and sets the parameter value of the third effector to the initial value. A musical performance device characterized by increasing from the value.

Images