JP3082614B2 - Music playback device and music playback system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music reproducing apparatus such as a karaoke playing apparatus, and more particularly to a music reproducing apparatus and a music reproducing system capable of easily performing a color changing operation of lyrics characters.
On-time.

[0002]

2. Description of the Related Art Generally, in a music reproducing apparatus such as a karaoke performance apparatus installed in a restaurant or a home, accompaniment music information, background video information, and lyric character information of a desired music are stored in a storage medium such as a laser disk. It is stored in advance. When the user selects a desired song, the background image is displayed in synchronization with the playback accompaniment sound, and at the same time, the lyrics characters are displayed on the image, and the colors of the lyrics characters are displayed along with the color of the lyrics characters so that the user can easily sing. It is widely known that they are adapted to change. In such a karaoke performance apparatus, music other than those stored on the laser disk cannot be used, and not only frequently used music but also all infrequently used music are prepared. The costs associated with that would be enormous and impractical.

[0003] Furthermore, even when a new song appears and it is desired to sing the song with accompaniment of a karaoke performance device, the new song is cut as a laser disk for the karaoke performance device and sings until commercially available. You can't do that and have to wait, for example, months before you can use it. Accordingly, a communication karaoke apparatus has recently been developed as a means for solving these problems at once. In this communication karaoke device, the information center has information about various kinds of songs that are released one after another as well as songs already released as a database, and distributes selected items to individual users via telephone lines as necessary. Then, the user selects and uses from the distributed music pieces. This communication karaoke apparatus includes a non-storage type apparatus in which information on a selected music piece is distributed from the center side every time a user selects a music piece, or a large-capacity storage medium such as a hard disk. There is a storage-type device in which information about frequently used music is stored in advance, and a desired music is selected from the stored data and used. This storage type device tends to be widely used because the cost of the communication line is less than that of the non-storage type device.

[0004] The data in the storage medium of this storage device is updated daily or as needed when the telephone line utilization rate is low, such as at night, and can be distributed early. By the way, electronic musical instruments such as synthesizers and electronic pianos have remarkably improved in performance such as sound quality due to technological progress, and information for driving the musical instruments is MIDI (Musical Instrument) defined for transmitting music information.
(Digital Interface) standard. Here, the MIDI refers to a hardware and software standard that is defined to enable information exchange by connecting to a sound source such as a musical instrument such as a synthesizer or an electronic piano.

By using the MIDI standard, it has become possible to transmit electronic musical instrument control signals efficiently. Other information that does not belong to the MIDI standard, such as lyric character information and still image information, is transmitted as a signal by a reversible arithmetic compression method, and the chorus information is transmitted by PCM (Pulse C).
Mode Modulation) signals and MPEG (Mo
Ving Picture Image Cordin
g ExpertsGroup) signal. The information stored in the storage device of the karaoke apparatus is read out and reproduced in accordance with the music selection of the user, and the user refers to the lyrics characters displayed on the display in time with the accompaniment music to be reproduced. While singing.

[0006]

By the way, in this type of karaoke performance apparatus, the following two methods have been adopted as a method of designating a color change position of a lyric character.
One of the methods is a method in which coordinates are developed for the entire display screen, and a position at which the color changes arbitrarily along the horizontal coordinates is designated. The color change position is specified on the coordinates. Another method is a method in which the color change is performed at a constant speed in units of one lyric character, one sentence, or one word, and the time and the color change speed are set in advance for each unit. deep.

However, in the former method, since the entire display screen is expanded into coordinates and the color change position is designated, the data capacity becomes extremely large, and the cost is increased accordingly. There was a problem of doing it. For example, since the number of dots in one horizontal line of a normal display is 300 to 400 dots, to change the color of one line, the same data as the number is required. In order to make a lyric character corresponding to a color change over several tens of lines, a high-speed access storage medium of several tens of Kbytes, for example, a RAM is required.

In the latter method, for example, since the color changes at a constant speed for each character or for each phrase, the color changes awkwardly, so that not only is it difficult for the user to sing, but also for the character unit or phrase. There is a problem that the data creation method becomes complicated because of the speed setting for each. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in order to effectively solve the problems. It is an object of the present invention to provide a music reproducing apparatus and a music reproducing apparatus capable of performing a smooth color changing operation with a simple structure. It is to provide a system .

[0009]

The inventor of the present invention has conducted intensive studies on the color change method of the lyric character, and as a result, regarding the color change of the lyric character, the change graph of the color change position is a set of partial straight lines when viewed globally. It can be approximated by broken lines, the slope of the straight line does not change continuously, and the color change of the lyrics character stops temporarily only between characters, In the above, the present inventors have found that the color change does not stop, leading to the present invention.

That is, the present invention provides a MIDI clock cow.
Part, lyrics character information storage, inflection point storage, color change position
A music playback device including a determination unit and a display processing unit,
The MIDI clock count section reproduces accompaniment music information.
The MIDI clock formed based on the
The current count value is output, and the lyrics character information storage
Outputs lyrics character information, and the inflection point storage unit stores
Corresponds to the inflection point where the speed changes and the number of MIDI clocks
The color change position determination unit stores the table
Inflections based on the current count value are located between
The current color change position is obtained from the point and output.
Based on the lyrics character information and the current color change position,
It is a music playback device that forms a video signal.

[0011]

Since the present invention is constructed as described above, the color change position determining section determines whether the current count value input from the MIDI clock count section is located between any inflection points stored in the inflection point storage section. The current color change position is obtained from the color change positions corresponding to both inflection points. Then, with reference to the color change position, the display processing unit forms a video signal that changes the color to the corresponding position of the lyrics character string from the lyrics character storage unit. This enables a color change operation without using a large-capacity storage medium for color change.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A music reproducing apparatus and music according to the present invention will be described below.
One embodiment of the reproduction system will be described in detail with reference to the accompanying drawings. FIG. 1 is a specific block diagram showing a system of a music reproducing apparatus conforming to the MIDI standard to which the present invention is applied.
FIG. 2 is a block diagram mainly showing a reproducing unit of the apparatus shown in FIG. 1, and FIG. 3 is a block diagram showing a basic configuration of a music reproducing apparatus according to the present invention. First, prior to describing the present invention,
The overall configuration of the music playback device will be described based on FIG. An information center 2 that provides information required by the music reproducing device 1 such as a storage type karaoke device or the like, when adding MIDI information (accompaniment music information), lyric character information, and a chorus for many songs. Has a large-capacity storage medium 3 that stores chorus information, still image information, and color change position table information used in the present invention, and each song is stored in a database. The accompaniment music information is information for driving an electronic musical instrument, and is formatted according to the MIDI standard.

The center control unit 4 manages the entire operation of the information center 2, and this database
The music is distributed from the interface 5 to a predetermined music reproducing apparatus 1 via the public telephone line 6 as necessary.
The information center 2 manages a plurality of music playback devices, one of which is shown in the illustrated example. The information distributed from the information center 2 is taken into the device via the interface 7 of the music reproducing device 1. The control means 8 comprises, for example, a microcomputer or the like, and controls the operation of the entire music reproducing apparatus.

The main storage means 9 stores information on a large number of music pieces distributed from the information center 2, ie, MIDI information,
It is a storage medium for storing lyric character information, chorus information, still image information, color change position table information and the like required in the present invention, and is inexpensive and has a large storage capacity because it stores a large amount of data. It is configured by a storage medium, for example, a hard disk. Video information storage means 10
Is composed of, for example, a large number of laser disks and the like, in which a large number of moving images are stored in advance, and each moving image is read out as needed in accordance with a song type such as enka, folk, pops and the like. Input means 1 consisting of keyboard, remote control, etc.
1 is for the user to select a song or for the tempo (speed) of the song
Is input, and has operation buttons 11A and the like for that.

The reproducing means 12 reproduces MIDI information, chorus information, lyric character information and the like read from the main storage means 9 via the control means 8 based on music selection information from the input means 11. The reproduced accompaniment music and chorus are mixed with the singing voice input from the microphone 13 by the mixer means 14 and output as sound by the speaker 15. The mixer means 14 includes an amplifier for amplifying an input signal.
Simultaneously with the reproduction of the selected music piece, the moving picture information selected according to the type of the music piece is read out from the moving picture information storage means 10 through the control means 8 and displayed on the display 16 while the reproduction means The lyrics character information reproduced in step 12 is superimposed and superimposed and displayed. In some cases, lyrics character information is superimposed and displayed on a still image stored in the main storage unit 9 instead of a moving image. Note that the moving image information storage means 10
Is constructed in a stand-alone manner and can operate independently.

Next, based on FIG. 2, a specific configuration mainly including the reproducing means 12 in FIG. 1 will be described. A feature of the present invention is that the color change position is obtained by referring to the color change inflection point table stored in the inflection point storage unit. First, the reproducing unit 12 has a bus 17 connected to the control unit 8, and the bus 17 is provided as a storage unit for high-speed access with a fast write / read operation, for example, a reproduction DRAM (Dynamic Random Access).
ss Memory) 18 is connected.

The reproduction DRAM 18 is provided in the main storage 9
, And temporarily stores information on the selected tune except for the still image information. Therefore, the lyric character area 20 as a lyric character storage unit for storing the lyric character information is provided inside the information. A MIDI area 21 for storing MIDI information (accompaniment music information), a chorus area 22 for storing chorus information, and a color change inflection point as an inflection point storage unit which is a feature of the present invention for storing color change inflection point table information. A table area 23 is secured. Although the above-mentioned areas are secured in one reproduction DRAM, a reproduction DRAM may be provided for each area, or one DRAM may be provided for an appropriate number of areas. .

The main font storage means 24 is a medium for fixedly storing font information of a main language or a language having a small number of characters, and is, for example, a ROM (Read Only).
Memory), and font information is stored in advance therein. Then, font information corresponding to the lyric character to be displayed is extracted. As the font information stored here, font information relating to English, French, Korean characters, etc., which have a small number of characters, as well as Japanese, which is frequently used, is stored.

The font developing section 25 stores the main font R
The information extracted from the OM 24 is developed and converted into dot information. For example, OFG (Outline
Font Generator). The lyric character video signal forming unit 26 is provided with the font developing unit 25.
This is a characteristic part of the present invention in which an actual video signal is formed based on dot information developed and formed in the step (1), and is shown in FIG. The video signal forming section 26 is provided with a lyrics display VDP (Video Display Processes).
sol) 27 and a lyric character video RAM (VRAM: Video) for temporarily storing the video signal formed here.
o Random Access Memory) 28
have. The video RAM 28 has a capacity capable of storing lyrics characters corresponding to a plurality of, for example, four screens in consideration of the time required for reproducing the lyrics characters, and sequentially outputs the stored information as a video signal. I have.

The still picture video signal forming section 29 is a section for forming a video signal for a still picture. The video signal forming section 29 directly fetches the still picture information read from the main storage means 9. V for still image forming video signal
DP (Video Display Processo)
r) 30 and a still image video RAM 31 for temporarily storing the video signal formed here. The video RAM 31 has a portion for storing a back screen title and the like in addition to a portion for storing a front screen still image, and has, for example, a storage capacity for two screens. Switch means 32
Selects and superimposes the video signal sent from the lyric character video signal forming section 26 and the video signal sent from the still picture video signal forming section 29 or the video signal sent from the moving picture information storage means 10. As a result, the still image or the moving image and the lyric character are displayed on the display 16 in a superimposed manner.

The MIDI reproducing section 33 has a sound source such as a synthesizer, and synthesizes and reproduces electronic sounds sequentially based on MIDI information read from the MIDI area 21 to form accompaniment music. is there. Chorus playback unit 3
Numeral 4 reproduces a chorus sound based on the chorus information drawn from the chorus area 22. The chorus information is stored in the previous chorus area 22 using an information compression technique such as PCM or MPEG, and is decoded and reproduced by the chorus reproducing unit 34. The audio signal reproduced by the MIDI reproducing section 33 and the chorus reproducing section 34 is further mixed and amplified with the audio signal from the microphone 13 by the mixer means 14 and reproduced as sound from the speaker 15. ing.

Next, the configuration of the lyric character video signal forming unit 26, which is a feature of the present invention, will be described with reference to FIG. In FIG. 3, the lyric character information storage unit corresponds to the lyric character area 20 in FIG. 2. As described above, the lyric character information transferred from the main storage means 9 is stored therein. The inflection point storage unit corresponds to the color change inflection point table area 23 in FIG. 2, and this area 23 includes a portion where the number of MIDI clocks and the color change speed rapidly change as shown in FIG. A certain color change inflection point is made to correspond and stored in a table. This table information is also transferred from the main storage means 9.

The MIDI clock counting section 35 counts a MIDI clock generated in accordance with the tempo information when the control means 8 (see FIG. 2) reproduces the MIDI information. Is counted cumulatively until is completed. Color change position determination unit 3
Reference numeral 6 denotes, for example, a microcomputer or the like, and obtains the current color change position by calculation by referring to the count value of the count unit 35 and the contents of the inflection point storage unit 23. The color change position register 37 is provided with the determination unit 36.
Is registered and stored, and this value is rewritten as the accompaniment progresses.

The display processing unit 38 adds a predetermined color to the lyrics character string up to the color change position based on the information on the color change position from the register unit and the lyrics character information from the lyrics character information storage unit 20. A video signal to be displayed is formed. The video signal formed here is transmitted to the display 16 while being stored in the lyrics character VRAM 28. The MIDI clock counting unit 3
5, the color position determination unit 36, the color change position register 37, and the display processing unit 38 form the lyrics character VDP27 in FIG.

Next, the operation of the embodiment constructed as described above will be described. First, a general flow during reproduction will be described. The main storage means 9 composed of a hard disk or the like stores information on each of a large number of music pieces distributed as needed from the information center 2, for example, MIDI information for accompaniment music, lyric character information, chorus information, still image information, and book information. Color change inflection point table information which is a feature of the present invention is stored.

When the user selects a music using the input means 11 and selects its tempo, the control means 8 stores a series of information for one music for the selected music in the main storage means 9.
, And is transferred to a predetermined area of the high-speed access storage unit of the reproduction unit 12, that is, the reproduction DRAM 18. When transferring lyrics characters, a JIS code such as a shift JIS code referred to at the time of development is added to individual character information. The still image information is not stored in the reproduction DRAM 18 but in the still image video signal forming unit 29.
Is directly transferred to the still image video RAM 31 of the first embodiment.

The MIDI information includes, in addition to the information on the accompaniment music, tempo information for the song, display timing and erasure timing of the lyric character, and the like. A MIDI clock that forms the basis for the overall operation is formed. This MIDI
The clock speed is, for example, 24 times the length of a quarter note.
The speed is set to count. The lyrics character information includes information on fade-in or fade-out, information on scrolling, information on colors before and after the color change, etc., in addition to information on lyrics characters to be displayed. The color change inflection point table information includes information on the color change position as shown in FIG.

Next, the control means 8 controls the reproduction DRAM 18
And reproduces the information stored in the MIDI reproduction unit 3 while forming the MIDI clock based on the MIDI information read from the MIDI area 21 as described above.
At 3, the accompaniment music by the electronic musical instrument is reproduced, and the chorus reproducing unit 34 is
Demodulates the chorus information. The accompaniment music and the chorus sound are mixed with the singing voice from the microphone 13 and output from the speaker 15 as sound.

At the same time, the lyric character information is read from the lyric character area 20, and the font information is read from the main font storage means 24 based on the character code added thereto. 2
At 5, the dot information is developed. The development of the lyric character information into dot information is performed repeatedly for each character. The expanded dot information is input to the lyric character video signal forming unit 26.
Is converted into a normal video signal and transmitted while being stored in the lyrics character VRAM 28. When forming the video signal of the lyric character, the reproduction DRAM 18
The table contents from the color change inflection point area 23 are referred to, and a video signal is formed in which the color of the lyrics character string changes in synchronization with the MIDI clock, that is, in accordance with the accompaniment music.

The lyric character video signal transmitted here is superimposed by the switch means 32 on the moving picture video signal reproduced by the moving picture information storage means 10 or the still picture video signal reproduced by the still picture video signal forming section 29. Then, it is displayed on the display 16. Accordingly, the user sings along with the accompaniment music while referring to the color change of the lyrics characters displayed below the moving image or the still image on the display 16.

Next, the color changing operation of the lyric character, which is a feature of the present invention, will be specifically described with reference to the flowcharts shown in FIGS. First, prior to the description of the flow, the contents of the color change inflection point table used here will be described. As described above, this table indicates the position at which the color change speed of the lyrics character string greatly changes in relation to the number of MIDI clocks. It is shown. Generally, the color change position of the lyrics character string is extracted by manually moving the fader while listening to the accompaniment music, but the actual relationship between the color change position and time (MIDI clock) at this time is as follows. FIG. 6 shows a combination of the case where the color change of the lyric character is continuously performed and the case where the color change is temporarily stopped, and the color change is temporarily stopped between the characters. Only, there is almost no stop in the middle of the character. Further, the inclination of the straight line when the color change is performed is substantially constant, and the color change speed hardly changes in the middle. Therefore, the change graph of the color change position can be represented as a set of partial straight lines, and can be approximated by a line graph.

FIG. 5 shows a graph in which the change in the color change position with respect to the lyric character, for example, “aiueo” is obtained from such a viewpoint in correspondence with the MIDI clock.
The lyric of this song changes color at a constant speed during "Ai", stops changing for a while, and then changes color again at a constant speed during "Ue" I have. Now, as a result of analyzing the color change position of the lyric character of the song by the fader, if a line graph as shown in FIG. 5 is obtained, the point at which the color change speed changes, that is, the inflection point in the illustrated example, The point at which the color change is temporarily stopped and the point at which the color change is started are inflection points and are indicated by black circles. Then, a table shown in FIG. 4 is obtained by plotting the inflection points. When a line graph as shown in FIG. 5 is actually obtained by the fader, the position of the inflection point may not be located between the lyric characters but may overlap with the lyric character itself due to an operational error. The inflection point may be corrected so as not to overlap the character itself.

Then, in the flow shown in FIG. 8, first, when the user selects a tune and the accompaniment starts (S
1) The control means 8 generates a MIDI clock based on the MIDI information read from the MIDI area 21, and at the same time, the lyric character information is read from the lyric character area 20. Then, the number of generated clocks is represented by M
It is counted by the IDI clock counting unit 35 (S
2). The count value is sequentially taken into the color changing position determining unit 36, and at the same time, the table contents of the inflection point storing unit 32 are also taken into the color changing position determining unit 36 via the bus 17 by the control unit 8 ( S3). Further, the read lyrics character information is taken into the display processing unit 38 via the bus 17.

The color change position determining unit 36 obtains two MIDI clocks on the table which are temporally preceding and succeeding from the current count value, and obtains the current color change position from the corresponding color change inflection point (S4). ).

How to find the MIDI clock immediately before and immediately after this time will be described in detail with reference to FIG. Current MI
The number of DI clocks is t, and the value of the MIDI clock stored on the table is tn. First, the value of n is set to zero (S10), and the MI at the top of the table is set.
The DI clock (t0) is compared with the current MIDI clock t (S11), and in the case of YES, that is, the current MID
If the I clock t is larger, n is incremented by one (S12), and then the second MIDI clock (t1) from the top in the table is compared with the current MIDI clock t (S11). . Such an operation is performed in S11
Repeat until NO is reached. If NO in S11, that is, the MIDI clock extracted from the table is
If it becomes larger than the current MIDI clock,
The MIDI clock tn of the table at that time and the MIDI clock t (n-1) of the immediately preceding table are extracted (S13), and the corresponding color change inflection point p is extracted.
The current color change position is determined from n and p (n-1).

FIG. 7 shows the two inflection points pn and p (n−
2 is a graph showing a method of obtaining a color change position p from 1), in which two inflection points pn and p (n-1) are connected by a straight line, and the two inflection points pn and p (n-1) are proportionally distributed based on the current MIDI clock t The position becomes the current color change position p.

Returning to FIG. 8, when the color change position determining section 36 finds the color change position p by such an operation, this position is registered and stored in the color change position register section 37 (S5). The display processing unit 38 always takes in the color change position information from the register unit 37, and based on this information, a lyric character video in which a predetermined color, for example, red, is added to the corresponding character of the character string of the lyric character information. A signal is formed, and the signal is output to the display 16 while being stored in the lyrics character VRAM 28 (S6). For example, referring to FIG. 5, assuming that, for example, the current color change position p in the register unit 37 is located between the lyrics characters “A” and “I”, the display processing unit 38 performs Is changed to red, and for "Iueo", a lyric character video signal is formed and output so as to remain white, which is the color before the color change, and is output on the display 16 based on this signal. Lyrics are displayed. In this case, since the MIDI clock is continuously generated while the music is being reproduced, the color change position p of the color change position register 37 advances sequentially as the music progresses. The lyrics of "Iueo" will gradually change to red as the song progresses.

As described above, it is only necessary to prepare a storage medium for storing an inflection point table having a very small amount of data for the color changing operation, and it is possible to use a storage medium having a small capacity, thereby achieving a great cost reduction. It becomes possible. In addition, since the color change operation is not performed in units of characters, the color change operation can be performed smoothly. Furthermore, even if the user changes the tempo of the song, the color change operation is
Since the synchronization is performed in synchronization with the DI clock, the color can be changed in accordance with the change in the tempo.

In the above-described embodiment, a case where the color changing speed is constant and the color changing stop occurs alternately as shown in FIG. 5 has been described as an example. However, the present invention is not limited to this. As shown, it is needless to say that the present invention can be applied to a case where the inclination of the inclined line changes in the middle and the color change speed intermittently changes.

[0040]

As described above, according to the music reproducing apparatus and the music reproducing system of the present invention, the following excellent operational effects can be exhibited. Only the inflection point at which the color change speed of the lyrics characters changes is stored in association with the MIDI clock, and the color change operation is performed based on this content, so that the color change operation can be performed without impairing the smoothness of the color change movement. The required storage medium capacity can be greatly reduced. Therefore, the cost can be reduced as much as the storage medium can be reduced in capacity.

[Brief description of the drawings]

FIG. 1 is a specific block diagram showing a system of a music playback device conforming to the MIDI standard to which the present invention is applied.

FIG. 2 is a block diagram mainly showing a reproducing unit of the apparatus shown in FIG. 1;

FIG. 3 is a block diagram showing a basic configuration of a music playback device according to the present invention.

FIG. 4 is a diagram showing a color change inflection point table.

FIG. 5 is a graph showing an example of a relationship between a MIDI clock and a color change position.

FIG. 6 is a graph showing a relationship between a MIDI clock actually obtained by a fader and a color change position.

FIG. 7 is an explanatory diagram for explaining a method of obtaining a color change position from two color change inflection points.

FIG. 8 is a flowchart showing a color changing operation of the lyrics characters.

FIG. 9 is a flowchart for determining a color change position.

FIG. 10 is a graph showing another example of the relationship between the MIDI clock and the color change position.

[Description of Signs] 1 ... Music playback device, 8 ... Control means, 9 ... Main storage means, 1
1 ... input means, 12 ... reproduction means, 16 ... display,
18: DRAM for reproduction, 20: lyrics character area (lyric character storage unit), 21: MIDI information area, 23: color change inflection point table area (inflection point storage unit), 26: lyrics character video signal forming unit, 35 ... MIDI clock counting unit, 36... Color changing position determining unit, 37.

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-6-130981 (JP, A) JP-A-6-236192 (JP, A) JP-A-6-118979 (JP, A) JP-A-3-3 202893 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G10K 15/04 302 G09G 5/00 510

Claims (2)

(57) [Claims] 1. MIDI clock counting section, lyrics characters
Information storage unit, inflection point storage unit, color change position determination unit, display processing
A music reproducing apparatus comprising: a MIDI clock counting unit for reproducing accompaniment music information;
Counts MIDI clocks formed based on raw
Output the current count value, the lyrics character information storage unit outputs lyrics character information, and the inflection point storage unit stores an inflection point at which the color change speed changes.
A table in which the number of MIDI clocks is associated is stored, and the color change position determining unit determines the current card number based on the table.
From the inflection point between the und values to the current color change position
The display processing unit calculates the lyrics character information and the current color change position.
Music playback device that forms a video signal based on a video signal . 2. MIDI clock count section, lyrics characters
Information storage unit, inflection point storage unit, color change position determination unit, display processing
A music playback system comprising: a MIDI clock counting unit for playing back accompaniment music information;
Counts MIDI clocks formed based on raw
Output the current count value, the lyrics character information storage unit outputs lyrics character information, and the inflection point storage unit stores an inflection point at which the color change speed changes.
A table in which the number of MIDI clocks is associated is stored, and the color change position determining unit determines the current card number based on the table.
From the inflection point between the und values to the current color change position
The display processing unit calculates the lyrics character information and the current color change position.
Music playback system that forms a video signal based on a video signal.