JP2011053464A - Electronic percussion instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform accurate sounding processing by properly detecting tapping on a pad, even when there is time lag between detection of switch-on by a contact sensor and detection of a tapping signal by a tapping sensor. <P>SOLUTION: In an electronic percussion instrument 1 of a multi-pad type, switch-on received by the contact sensor SW is scanned by fixed interval, and tapping decision flags RPiSW and HPiSW are processed to be switched on, when switch-on is detected continuously the prescribed number N1 or more, while tapping decision flag hold processing which keeps an on-state of the tapping decision flags RPiSW and HPiSW is performed, till prescribed time periods HTr and HTh pass. If the tapping decision flags RPiSW and HPiSW are in the on-state, when prescribed tapping force PiLevel is detected at the tapping sensor ADi, sounding processing is performed, that is, musical tones corresponding to the pads HPi and RPi are generated on the basis of the prescribed tapping force PiLevel. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic percussion instrument that generates an electronic performance sound in response to a performance operation of a performance operator having a hitting surface.

  Conventionally, for example, as shown in Patent Document 1, a pad-like performance operator having a striking surface (hereinafter sometimes simply referred to as “pad”) is provided, and a drum or There are electronic percussion instruments that generate performance sounds that simulate percussion instruments such as cymbals. In such an electronic percussion instrument, when a pad is hit with a stick or a hand, performance information associated with the hit pad is read, and a performance sound or a short phrase is generated accordingly. It is like that.

  Such an electronic percussion instrument includes a striking position detecting means for detecting a signal related to the position of the striking operation with respect to the pad, a striking force detecting means for detecting a signal regarding the striking force according to the striking operation with respect to the pad, and detecting these striking positions. Control means for performing sound generation processing based on the detection of the means and the striking force detection means, and based on the detection of the striking position detection means and the striking force detection means, the sound generation processing according to the striking against the pad by the control means Is configured to do. The hitting position detecting means is composed of a film-like switch (contact sensor) attached to the back side of the pad, and the hitting force detecting means detects vibration caused by hitting the pad and generates an electric signal. It is composed of a piezo element that outputs.

  By the way, there is a multi-pad type electronic percussion instrument having a plurality of pads arranged adjacent to each other. In that case, the striking position detecting means for detecting the striking position with respect to the pad is provided separately for each pad. On the other hand, the striking force detection means for detecting the striking force against the pad may be provided in common by two or more adjacent pads so that the striking force against a plurality of pads can be detected.

JP 2003-108140 A

  However, depending on the characteristics of the pad and the arrangement configuration of the striking position detection means and the striking force detection means, the timing of the striking position signal detection (switch-on by striking) by the striking position detection means and the striking force by the striking force detection means There may be a time difference from the time of signal detection (vibration waveform signal detection). In particular, when the hitting force detecting means is shared by two or more pads as described above, the hitting position detecting means and the hitting force detecting means are installed at positions separated from each other. There is a risk that a significant signal detection time lag occurs. In other words, in this case, when the striking position signal is detected by the striking position detection means, the striking force signal is not yet detected by the striking force detection means, so that the sounding process of the hit pad cannot be performed. was there.

  The above-mentioned problem is not necessarily a problem peculiar to a multi-pad electronic percussion instrument having a plurality of pads. Even in an electronic percussion instrument having a single pad (percussion surface), a hitting operation on the percussion surface can be performed. A similar problem may occur when the striking position detection means for detecting and the striking force detection means for detecting the striking force are installed at positions separated from each other.

  The present invention has been made in view of the above-described points, and an object of the present invention is to provide a striking force with respect to detection of a striking position signal by a striking position detection means in an electronic percussion instrument having a performance operator having a striking surface. Even when the detection of the striking force signal by the detecting means is delayed, it is possible to accurately detect the striking of the performance manipulator so that sound generation processing corresponding to the striking can be performed accurately.

  An electronic percussion instrument according to the present invention includes a performance operator (HPi, RPi) having a percussion surface, a striking position detection means (SW) for detecting a signal related to the position of a striking operation with respect to the performance manipulator (HPi, RPi), and a performance. Based on the detection of the striking force detecting means (AD) for detecting the striking force corresponding to the striking operation on the operation element (HPi, RPi), the striking position detecting means (SW) and the striking force detecting means (AD), Control means (45) for performing sound generation processing in accordance with the striking operation on the performance operator (HPi, RPi), and the control means (45) receives a predetermined input signal received by the striking position detection means (SW). In response to the detection (YES in ST4-8 and ST4-18), a process of turning on the hit determination flag (RPiSW, HPiSW) for the performance operator (HPi, RPi) is performed (ST4-9). In ST4-19), the hit determination that maintains the ON state of the hit determination flag (RPiSW, HPiSW) from when the hit determination flag (RPiSW, HPiSW) is turned on until a predetermined time (HTr, HTh) elapses. The flag hold process is performed (ST4-10, ST4-20), and the hit determination flag (RPiSW, HPiSW) is on when the predetermined hitting force (PiLevel) is detected by the hitting force detection means (AD). (ST6-5, YES in ST6-11), sound generation processing for generating a musical sound corresponding to the performance operator (HPi, RPi) based on a predetermined striking force (PiLevel) is performed (ST6-6, ST6-). 12) It is characterized by that.

  According to the electronic percussion instrument of the present invention, the hit determination flag (RPiSW, HPiSW) is kept on until the predetermined time (HTr, HTh) elapses after the hit determination flag (RPiSW, HPiSW) is turned on. If the hit determination flag (RPiSW, HPiSW) is on when the hit determination flag holding process is performed and the predetermined hit force (PiLevel) is detected by the hit force detection means (AD), the performance operation is performed. Since sound generation processing for generating a musical sound corresponding to the child (HPi, RPi) based on the striking force (PiLevel) detected by the striking force detection means (AD) is performed, a position signal due to striking is given to the striking position detection means. Even when the hitting force detection means is not detected at the time of input, the hitting force detection means will continue to strike while the predetermined time elapses. If there is a detection of the striking power, sound generation processing for the hit can be performed. Therefore, even when the detection of the striking force by the striking force detection means is delayed with respect to the input of the position signal due to the striking to the striking position detection means, it is possible to accurately detect the striking on the performance operator and perform accurate sound generation processing. It becomes like this.

  In the electronic percussion instrument, a plurality of performance operators (HPi, RPi) are provided, and the striking position detecting means (SW) is a batting operation for each of the plurality of performance operators (HPi, RPi). (Sri, SWhi) are separately provided, and the striking force detection means (AD) is provided with any two or more performance operators (HPi) among the plurality of performance operators (HPi, RPi). , RPi) may be provided in common for detecting their striking force (PiLevel) (ADi).

In the multi-pad electronic percussion instrument having a plurality of performance operators, as described above, the hitting position detection means is provided separately for each performance operator, and either one of the hitting force detection means is provided. When one or more performance operators are commonly used to detect their striking force, the striking position detecting means and the striking force detecting means corresponding to one of the performance operators are separated from each other. It will be installed at the position. Further, the striking force detection means shared by the plurality of performance operators are not arranged at equal positions with respect to the striking positions of the performance operators, but are arranged at different distances. As a result, the time lag between the detection of the striking force signal by the striking force detection means and the detection of the position signal by the striking position detection means may become significant.
On the other hand, in the electronic percussion instrument according to the present invention, even when the striking force detection means does not detect the striking force signal at the time when the striking position detection means detects the striking position signal, the predetermined time is thereafter. If a striking force signal is detected by the striking force detection means during the lapse of time, sound generation processing for the striking can be performed. Therefore, it is possible to accurately perform sound generation processing when a time difference occurs in the detection of a hit, which is a problem in the multi-pad electronic percussion instrument.

  As one embodiment of the multi-pad type electronic percussion instrument as described above, the performance operator (HPi, RPi) includes a solid pad (RPi) having at least one set of solid-shaped striking surfaces arranged adjacent to each other. ) And a planar pad (HPi) having a planar striking surface, and the striking position detecting means (SW) detects a striking operation on each of the pair of three-dimensional pad (RPi) and the planar pad (HPi) ( SWri, SWhi) are provided separately, and the striking force detection means (AD) detects the striking force (PiLevel) of both the solid pad (RPi) and the flat pad (HPi) (ADi). A common one is listed.

  In the electronic percussion instrument, when the control means (45) performs the process of turning on the hit determination flag (RPiSW) of the three-dimensional pad (RPi), the point when the hit determination flag (RPiSW) is turned on. Until the first time (HTr) elapses, the hit determination flag (RPiSW) is kept on by the hit determination flag hold process, while the hit determination flag (HPiSW) of the plane pad (HPi) is turned on. In the case where the process is performed, the hit determination flag hold process from when the hit determination flag (HPiSW) is turned on until the second time (HTh) different from the first time (HTr) elapses. May keep the hit determination flag (HPiSW) on.

  That is, here, the duration of the hit determination flag hold process (HTr, in the case of performing the process of turning on the hit determination flag of the three-dimensional pad and the case of performing the process of turning on the hit determination flag of the plane pad are performed. HTh) is made different. In this case, the first time (HTh) that is the duration of the hit determination flag hold process for the flat pad and the second time (HTr) that is the duration of the hit determination flag hold process for the three-dimensional pad are the plane. It is good to set so that the continuation time with respect to a pad and a solid pad with a longer distance from the striking force detection means is longer. By doing so, even when it takes time to detect a striking force signal corresponding to the hitting of the flat pad or the three-dimensional pad, it is possible to accurately detect the hit on the flat pad or the three-dimensional pad and perform accurate sound generation processing. Is possible.

In the electronic percussion instrument, the control means (45) performs the sound generation process before the predetermined time (HTr, HTh) elapses after the hit determination flag (RPiSW, HPiSW) is turned on. At that time, the hit determination flag hold processing is ended, and the hit determination flag (RPiSW, HPiSW) is preferably turned off. In this way, even when the hit determination flag hold process is being executed, when the predetermined hitting force is detected by the hitting force detection means and the sound generation process is performed, by turning off the hit determination flag, The sound generation process can be continuously performed in response to the hitting operation of the performance operator. Therefore, it is possible to more accurately perform the sound generation process for the hitting of the flat pad or the solid pad performed continuously.
In addition, the code | symbol in said parenthesis shows the code | symbol attached | subjected to the corresponding component or process in description of embodiment mentioned later as an example of this invention.

  According to the present invention, in an electronic percussion instrument including a performance operator having a striking surface, when the detection of the striking force signal by the striking force detection means is delayed with respect to the detection of the position signal by the striking by the striking position detection means. However, it is possible to accurately detect a hit on the performance operator and to perform accurate sound generation processing according to the hit.

1 is a schematic plan view of an electronic percussion instrument according to an embodiment of the present invention. It is a figure which shows schematic structural example of an electronic percussion instrument, (a) is a side view of an electronic percussion instrument, (b) is a sectional side view of a pair of plane pads and rim pads provided in the electronic percussion instrument, and (c) is a performance operation It is a top view of a child. It is a block diagram which shows the function structure of an electronic percussion instrument. It is a flowchart (main flow) which shows the flow of the process by an electronic percussion instrument. It is a flowchart which shows a timer interruption process. It is a schematic block diagram which shows the function structure for performing a hit | damage detection process and a sound generation control process. It is a flowchart which shows the subroutine of a hit | damage detection process. It is a flowchart which shows the subroutine of an impact position detection process. It is a figure which shows typically the specific example of the impact detection by a contact sensor. It is a flowchart which shows the subroutine of a striking force detection process. It is a flowchart which shows the subroutine of sound generation control processing.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, when referring to the front-rear direction or the front side and the back side, it indicates the front-rear direction or the front side and the back side as viewed from the player side of the electronic percussion instrument 1 described later, and when referring to the left-right (lateral) direction, It shall indicate the left and right (lateral) direction as seen from the performer side. 1 and 2 are diagrams showing a schematic configuration example of an electronic percussion instrument 1 according to an embodiment of the present invention. FIG. 1 is a plan view of the electronic percussion instrument 1. FIG. 2 (a) is a side view of the electronic percussion instrument 1. FIGS. 2B and 2B are side sectional views of a pair of plane pads HPi and rim pads RPi described later, and FIG. 3C is a plan view of the performance operator 10 (plane pads HPi and rim pads RPi). The electronic percussion instrument 1 is a desktop electronic musical instrument and is accommodated in a case 2 formed in a substantially flat plate shape. A performance operator 10 composed of a plurality of pads P for performing a performance operation is disposed on the back side of the upper surface of the case 2, and a setting operation of the electronic percussion instrument 1 is performed at a corner on the front side. A setting operation unit 30 is installed. As shown in FIG. 2A, a terminal portion 3 having a plurality of terminals for connecting a power source or connecting an external device is provided on the rear surface of the case 2.

  As shown in FIG. 1, the performance operator 10 has a substantially rectangular outer shape, and is partitioned in a lattice shape along the front-rear direction and the left-right direction as viewed from the performer side (front side). In the present embodiment, the performance operator 10 is divided into four rows in the front-rear direction and three rows in the left-right direction, and a total of twelve pads P are arranged.

  As shown in FIG. 1, the three pads P that are arranged in a horizontal row on the back side and the three pads P that are arranged in a horizontal row on the front side are a plan view. As shown in FIG. 2 (a), the outer shape is a three-dimensional striking surface V that is raised in a substantially cylindrical surface with the left-right direction as the axial direction. Hereinafter, these six pads are referred to as rim pads (three-dimensional pads) RPi (i = 1 to 6). Then, the three rim pads RPi arranged on the back side are designated as rim pad RP1, rim pad RP2, and rim pad RP3 in this order from the left, and the three rim pads RPi arranged on the near side are rim pad RP4, rim pad RP5, and rim pad RP6 in order from the left. And

  Further, as shown in FIG. 1, all six pads P arranged between the rim pads RP1 to RP3 and the rim pads RP4 to RP6 in the front-rear direction have a substantially square shape in plan view, and FIG. As shown to (a), it has the planar-shaped hitting surface V. FIG. Hereinafter, these six pads are referred to as planar pads HPi (i = 1 to 6). Of the six flat pads HPi arranged in two rows in the front and rear, the three pads HPi arranged on the back side are designated HP1, HP2, HP3 in order from the left, and the three pads arranged on the front side. HPi is HP4, HP5 and HP6 in order from the left.

  Further, as shown in FIG. 2A, the performance operator 10 has a step T as a boundary, and the back surface thereof is higher than the front surface. The rim pads RP1 to RP3 and the flat pads HP1 to HP3 are arranged on the rear surface (upper surface), and the flat pads HP4 to HP6 and rim pads RP4 to RP4 are arranged on the front surface (lower surface). RP6 is arranged. Then, the upper side flat pad HP1 and the rim pad RP1, the flat pad HP2 and the rim pad RP2, the flat pad HP3 and the rim pad RP3 are arranged adjacent to each other in the front and rear, and the lower rim pad RP4, the flat pad HP4, and the rim pad RP5 The planar pad HP5, the rim pad RP6, and the planar pad HP6 are arranged adjacent to each other in the front-rear direction.

  The rim pad RPi is suitable for a performance operation of striking the striking surface V raised in a cylindrical surface with the abdomen (side surface) of a stick (not shown). In such performance operation with respect to the rim pad RPi, the rim pad RPi is often hit in an oblique direction from the upper side toward the lower side due to the angle at which the stick is swung down. On the other hand, the flat pad HPi is suitable for a performance operation of hitting a flat hitting surface V with the tip of a stick. In such a performance operation, the flat pad HPi is often struck in a direction substantially perpendicular to the striking surface V from directly above to below. Note that the performance operation for the rim pad RPi and the flat pad HPi is not limited to the impact with a stick, but may be an impact performed with a part of the body such as a hand, or a performance operation for pressing the strike surface V with a hand or the like in addition to the impact. It is also possible to perform.

  As shown in FIG. 2B, the striking surface V of each planar pad HPi and rim pad RPi is composed of a sheet-like surface material 21 made of an elastic material such as rubber. Between each planar pad HPi and the rim pad RPi, a lattice-like groove 12 is provided. Each rim pad RPi and planar pad HPi are partitioned by the groove portion 12. A flat elastic member 25 made of rubber or the like is installed on the back side of the surface material 21, and a contact sensor placed on a reinforcing plate (pad body) 23 on the lower surface of the elastic member 25. (Blow position detection means) SW is provided. The contact sensor SW is composed of a film-like switch (sheet-like pressure sensor). As shown in FIGS. 2B and 2C, the contact sensor SW is connected to the contact sensor SWri (i = 1 to 6) installed on the lower surface side of each rim pad RPi and the lower surface side of each planar pad HPi. It consists of the installed contact sensors SWhi (i = 1 to 6), and a total of 12 are installed. Accordingly, when the hitting surface V is deformed in accordance with a hitting operation or the like on either the flat pad HPi or the rim pad RPi, the corresponding contact sensor SWhi or contact sensor SWri is switched on.

  The time for which the contact sensor SWhi or the contact sensor SWri is switched on (switch-on duration) is determined according to the deformation size (deformation amount) of the striking surface V generated in the flat pad HPi or the rim pad RPi. . That is, when the deformation of the hitting surface V generated on the flat pad HPi or the rim pad RPi is large, the switch-on duration of the contact sensor SWhi or the contact sensor SWri becomes long, and when the deformation of the hitting surface V is small, the contact sensor SWhi. Alternatively, the switch-on continuation time of the contact sensor SWri is shortened. And the main control part 45 mentioned later is comprised so that the presence or absence of the said switch-on which the contact sensor SW receives may be continuously scanned every predetermined time (about 10 ms-30 ms as an example), As a result of the said scan, When the switch-on of the contact sensor SW is continuously detected a predetermined number of times, a process for turning on the hit determination flag for the corresponding flat pad HP1 to HP6 pad or rim pad RP1 to RP6 is performed.

  Further, on the lower surface side of the reinforcing plate 23 on which the contact sensor SW is placed, an end side 21a of the surface material 21 extending from the upper surface side of the planar pad HPi or the rim pad RPi is laid in a wound state. As a result, the reinforcing plate 23 is elastically supported via the end 21 a of the surface material 21 on the base 24 (configured by a part of the case 2) installed below the performance operator 10. .

  On the lower surface side of the reinforcing plate 23, an impact sensor (striking force detecting means) AD formed in a small plate shape that comes into surface contact with the reinforcing plate 23 is installed. The striking sensor AD is configured by a piezo element that detects vibration caused by striking the flat pad HPi and the rim pad RPi and outputs an electrical signal. The striking sensor AD is affixed to the lower surface of the reinforcing plate 23 with a piezo tape (cushion material) 26a, and detects the striking strength (striking force) when a striking operation is performed on the flat pad HPi or the rim pad RPi. Can do. As shown in FIGS. 2B and 2C, the impact sensor AD is provided on the lower surface side of the position corresponding to each planar pad HPi (i = 1 to 6). 6), a total of 6 are installed. Each striking sensor ADi detects the striking force of the corresponding flat pad HPi, and also detects the striking force of the rim pad RPi of the same number adjacent to each flat pad HPi. That is, the six impact sensors ADi (i = 1 to 6) are shared by the plane pad HP1 and the rim pad RP1, the plane pad HP2 and the rim pad RP2,..., The plane pad HP6 and the rim pad RP6, respectively.

  On the other hand, as shown in FIG. 1, on the panel surface 31 of the setting operation unit 30, various operation keys 32 including a cursor switch and an input switch, a volume adjustment knob 33, a display unit 34 including a liquid crystal panel, a performance An LED 36 and the like for lighting the operation state are arranged. In addition, an audio output unit (not shown) including a speaker for outputting various sounds such as performance sounds is also arranged near the panel surface 31. The display unit 34 displays a setting operation screen for performing various setting operations.

  FIG. 3 is a block diagram showing a functional configuration of the electronic percussion instrument 1. The electronic percussion instrument 1 includes a performance operator 10, a setting operation unit 30, a sound source (sound source circuit) 41, a sound system 42, a ROM 43, a RAM 44, a main control unit (CPU) 45, a timer 46, a storage unit 47, a display unit 34, and an interface. (I / F) 48 are provided, and these units are connected to each other via a bus 50.

  The performance operator 10 includes six plane pads HPi (i = 1 to 6) and six rim pads RPi (i = 1 to 6) having the above-described configuration, and these plane pads HPi and rim pads RPi. A total of 12 contact sensors SWhi, SWri (i = 1 to 6) and a total of six impact sensors ADi (i = 1 to 6) are attached. The performance operator 10 is connected to the bus 50 via the operation interface 13. The main control unit (CPU) 45 serves to control the entire electronic percussion instrument 1, and functions as means for executing the processes when various processes described later are performed on the electronic percussion instrument 1.

  The timer 46 measures an interrupt time and various times in a timer interrupt process described later. The ROM 43 stores a control program executed by the main control unit 45, various application programs including a data table and a control program, various data, and the like. Further, performance sound data assigned to each of the pads HPi and RPi can be stored. The RAM 44 temporarily stores automatic performance data, various input information, calculation results, and the like. The storage unit 47 includes a storage medium such as an HDD or a flash memory, and can store various setting information, performance data, and the like. The display unit 34 includes a liquid crystal display (LCD) for displaying various information. The display unit 34 may be composed of a light emitting diode (LED). The interface (I / F) 48 connects an external performance device 49, and inputs various signals (for example, a MIDI (Musical Instrument Digital Interface) signal) from the external performance device 49, or the external performance device 49. Output a signal. The sound source 41 converts performance data input by the operation of the performance operator 10 or preset automatic performance data into a musical sound signal. The sound system 42 includes an amplifier, a speaker, and the like that convert a musical sound signal from the sound source 41 into sound.

  In the electronic percussion instrument 1 of the present embodiment, timbre data stored in advance in the ROM 43 or the storage unit 47 can be used as the sound source data of the performance sound generated in response to the performance operation of the performance operator 10. In addition, in the case of having a sampling function for taking in sound from the outside, it is also possible to use sampled waveform data as sound source data of performance sound.

  Next, various processes performed in the electronic percussion instrument 1 having the above configuration will be described. FIG. 4 is a flowchart (main flow) showing a flow of processing in the electronic percussion instrument 1. When the electronic percussion instrument 1 is turned on, first, processing according to the main flow shown in FIG. 4 is executed. This process is continuously executed until the power of the electronic percussion instrument 1 is turned off. In this main flow, first, the setting of each part of the electronic percussion instrument 1 is initialized (step ST1-1). Thereafter, a setting operation acceptance process is executed (step ST1-2). The setting operation accepting process is a process corresponding to the operation of the setting operation unit 30, whereby various functions of the electronic percussion instrument 1 are set. The setting operation process in step ST1-2 is repeatedly executed while the electronic percussion instrument 1 is powered on.

  Then, timer interrupt processing is executed while the main flow is being executed. FIG. 5 is a flowchart showing timer interrupt processing. In the timer interrupt process, a process of increasing the time register value by a certain value is performed every predetermined interrupt time (about 0.1 to 1.0 ms as an example) timed by the timer 46 (step ST2-1). . Whenever the time register value is increased, the hit detection process (step ST2-2) and the sound generation control process (step ST2-3) are performed. In the hit detection process, the hit operation for the performance operator 10 is detected. On the other hand, in the sound generation control process, generation of a musical sound signal based on the hit detection process is instructed. Specific procedures of these hit detection processing and sound generation control processing will be described in detail below.

  FIG. 6 is a schematic block diagram showing a functional configuration for performing the hit detection process in step ST2-2 and the sound generation control process in step ST2-3. FIG. 7 is a flowchart showing a subroutine of the hit detection process in step ST2-2. In the hit detection process of FIG. 7, a hit position detection process (step ST3-1) and a hitting force detection process (step ST3-2) are performed. This hit detection process is performed by the hit detection processing unit 45a included in the main control unit 45 shown in FIG. 6, and is detected by the contact sensor (batch position detecting means) SW in the hit position detection process of step ST3-1. The switch-on data and the detection value PiLevel of the striking force detected by the striking sensor (striking force detecting means) AD in the striking force detection process in step ST3-2 are output to the striking detection processing section 45a of the main control section 45. Is done.

  Then, various sound generation control data such as a flat pad hitting flag HPiSW, a rim pad hitting flag RPiSW, a hitting force detection flag Pikeyon, and a hitting force PiLevel, which will be described later, obtained by the hit detection processing are sent to the tone generation control processing unit 45b. Sent. The sound generation control processing unit 45b performs sound generation control processing in step ST2-3 based on these various sound generation control data. The specific contents of the striking position detection process in step ST3-1, the striking force detection process in step ST3-2, and the sound generation control process in step ST2-3 will be described in detail below.

  FIG. 8 is a flowchart showing a subroutine of the striking position detection process (step ST3-1). FIG. 9 is a diagram schematically showing a specific example of hitting position detection by the contact sensor SW. In the striking position detection process in FIG. 8, the striking position is detected for the set of the flat pad HP1 and the rim pad RP1 with the pad number i ← 1 (step ST4-1). Here, by counting up from pad number i = 1 to 6 in order, the striking position detection process of the set of plane pad HP6 and rim pad RP6 is sequentially performed from the set of plane pad HP1 and rim pad RP1. However, since the processing procedure for each group is common, the following description will be described with the pad number i including the process for each group.

  Here, first, it is determined whether or not the rim pad striking flag (striking determination flag) RPiSW = 1 (flag on) (step ST4-2). The rim pad striking flag RPiSW is a flag that is set in response to the switch-on detection of the contact sensor SWri corresponding to the rim pad RPi in the process of step ST4-9 described later. As a result, if RPiSW = 1 (YES), it is determined whether or not the timer TimeRPiSW has passed a predetermined time (first time) HTr (step ST4-3). As will be described later, the timer TimeRPiSW is started when the rim pad hit flag RPiSW = 1 (step ST4-10), and the elapsed time from when the rim pad hit flag RPiSW = 1 is set. To count. As a result, if the timer TimeRPiSW has passed the predetermined time HTr (YES), the rim pad hit flag RPiSW ← 0 (flag off) is set (step ST4-4).

  When the rim pad hit flag RPiSW ← 0 is set at step ST4-4, or when RPiSW = 1 is not set at step ST4-2 (NO), the switch-on detection of the rim pad RPi (the contact sensor SWri corresponding to the rim pad RPi is detected). The presence or absence of switch-on detection (the same applies hereinafter) is determined (step ST4-5). As a result, if there is no switch-on detection of the rim pad RPi (NO), the number of rim pad switch-on detections NRPi ← 0 is set (step ST4-6). On the other hand, if the switch-on detection of the rim pad RPi is detected (YES), the rim pad switch-on detection count NRPi is counted up to NRPi ← NRPi + 1 (step ST4-7). Subsequently, it is determined whether or not the rim pad switch-on detection count NRPi = N1 (step ST4-8). N1 is the number of times of continuous switch-on that is a reference for setting the rim pad hitting flag RPiSW = 1 (flag on), and in this embodiment, N1 = 2. Note that the specific number of times N1 is not limited to two, and may be another number.

  If NRPi = N1 in step ST4-8 (YES), the rim pad hit flag RPiSW ← 1 (flag on) is set (step ST4-9). That is, as shown in FIG. 9, when the switch-on is detected continuously for N1 = 2 times, the hit determination flag for the rim pad RPi is turned on. Then, the timer TimeRPiSW is started (step ST4-10), and the rim pad striking flag RPiSW holding process is started. While the rim pad hit flag RPiSW is being held, the state of the rim pad hit flag RPiSW = 1 is maintained. On the other hand, if NRPi ← 0 is set in the previous step ST4-6, or if NRPi = N1 is not set in step ST4-8 (NO), the rim pad hitting flag RPiSW ← 0 (flag off) is set (step ST4-11). .

  If the timer TimeRPiSW has not elapsed the first time HTr in the previous step ST4-3 (NO), if the timer TimeRPiSW is started in step ST4-10, or the rim pad hit flag RPiSW ← in step ST4-11 If it is set to 0, it is subsequently determined whether or not the flat pad hitting flag (hitting determination flag) HPiSW = 1 (flag on) (step ST4-12). The flat pad hitting flag HPiSW is a flag that is set in response to the switch-on detection of the contact sensor SWhi corresponding to the flat pad HPi in the process of step ST4-19 described later. As a result, if HPiSW = 1 (YES), it is determined whether or not the timer TimeHPiSW has passed a predetermined time (second time) HTh (step ST4-13). As described later, the timer TimeHPiSW is started when the plane pad hit flag HPiSW = 1 (step ST4-20), and from the time when the plane pad hit flag HPiSW = 1 is set. The elapsed time is counted. As a result, if the timer TimeHPiSW has passed the predetermined time HTh (YES), the plane pad hitting flag HPiSW ← 0 (flag off) is set (step ST4-14).

  When the flat pad hit flag HPiSW ← 0 is set at step ST4-14 or when HPiSW = 1 is not set at step ST4-12 (NO), the switch-on detection of the flat pad HPi (contact corresponding to the flat pad HPi) is detected. Whether or not the sensor SWhi is switched on (hereinafter the same applies) is determined (step ST4-15). As a result, if there is no switch-on detection of the planar pad HPi (NO), the number of planar pad switch-on detections NHPi ← 0 is set (step ST4-16). On the other hand, if there is a switch-on detection of the flat pad HPi (YES), the flat pad switch-on detection count NHPi is counted up to NHPi ← NHPi + 1 (step ST4-17). Subsequently, it is determined whether or not the planar pad switch-on detection count NHPi = N1 (step ST4-18). N1 is the number of times of continuous switch-on that is a reference for setting the flat pad hitting flag HPiSW = 1 (flag on), and in this embodiment, N1 = 2 times. Note that the specific number of times N1 is not limited to two, and may be another number. Here, the number of detections for the rim pad RPi and the planar pad HPi is set to the same number (both N1 = 2), but it is also possible to set both to different numbers.

  If NHPi = N1 in step ST4-18 (YES), the plane pad hitting flag HPiSW ← 1 (flag on) is set (step ST4-19). That is, as shown in FIG. 9, when the switch-on is detected consecutively for N1 = 2 times, the hit determination flag for the plane pad HPi is turned on. Then, the timer TimeHPiSW is started (step ST4-20), and the holding process of the flat pad hitting flag HPiSW is started. While the flat pad hitting flag HPiSW is being held, the flat pad hitting flag HPiSW = 1 is maintained. On the other hand, if NHPi ← 0 is set in step ST4-16, or if NHPi = N1 is not satisfied in step ST4-18 (NO), the plane pad hitting flag HPiSW ← 0 (flag off) is set (step ST4-21).

  If the timer TimeHPiSW has not passed the second time HTh in the previous step ST4-13 (NO), or if the timer TimeHPiSW has been started in step ST4-20, or the flat pad hitting flag HPiSW in step ST4-21 If ← 0, then the pad number i is counted up to i ← i + 1 (step ST4-22). Then, it is determined whether i> m (m = 6 in this embodiment) (step ST4-23). If i> m is not satisfied (NO), the process returns to step ST4-2, and the next rim pad RPi is determined. And a hitting position detection process for a set of plane pads HPi (i = 2). In this way, the pad number i is incremented by one, and the processing for the six sets of planar pads HPi and rim pads RPi is sequentially performed. If i> m (YES), the process returns to step ST4-1.

  FIG. 10 is a flowchart showing a subroutine of the striking force detection process (step ST3-2). In the striking force detection process, the striking force detection process for the set of the planar pad HP1 and the rim pad RP1 is performed with the pad number i ← 1 (step ST5-1). In this striking force detection process, the pad number i = 1 to 6 is counted up in order, so that the striking force detection process for the pair of the plane pad HP6 and the rim pad RP6 is sequentially performed from the pair of the plane pad HP1 and the rim pad RP1. However, since the processing procedure for each group is common, in the following description, the process for each group is included and described as a pad number i.

  Here, it is determined whether or not the timer TimeADi has already been started (step ST5-2). The timer TimeADi is for measuring an elapsed time after the impact force PiLevel exceeds a predetermined impact force (first impact force) x1, and includes 6 impact sensors corresponding to each plane pad HPi and rim pad RPi. It is counted separately for each ADi. As a result, if the timer TimeADi has not been started (NO), it is determined whether or not the striking force PiLevel input to the striking sensor ADi is larger than the first striking force x1, that is, PiLevel> x1 (step). ST5-3). As a result, if PiLevel> x1 (YES), the timer TimeADi is newly started as TimeADi ← 0 (step ST5-4). That is, the first striking force x1 is a striking force serving as a reference for starting the count of the timer TimeADi. On the other hand, if the timer TimeADi has already been started in the previous step ST5-2 (YES), it is determined whether or not the timer TimeADi has passed the wait time WT (ST5-5). The wait time WT here is a waiting time until the striking force PiLevel inputted to the striking sensor ADi is stabilized, and is a waiting time necessary for accurately detecting the presence / absence of striking and the striking force PiLevel.

  As a result, if the timer TimeADi has passed the wait time WT (YES), is the striking force PiLevel detected by the striking sensor ADi greater than a predetermined striking force (second striking force) x2 (x2 ≧ x1)? It is determined whether or not PiLevel> x2 (step ST5-6). The second striking force x2 is a striking force that serves as a reference for determining that there is a striking against the flat pad HPi or the rim pad RPi. As a result, if PiLevel> x2 (YES), the striking force detection flag Pikeyon ← 1 is set (step ST5-7), and the value of the striking force PiLevel is detected (step ST5-8). Then, the timer TimeADi is stopped (ST5-9). On the other hand, if PiLevel> x2 is not satisfied in step ST5-6 (NO), the timer TimeADi is stopped as it is without detecting the value of the striking force PiLevel (ST5-9). That is, if the striking force PiLevel does not reach the second striking force x2 even after the wait time WT has elapsed, it is determined that the striking force PiLevel is not a striking but a simple noise, and the striking force PiLevel is not detected.

  When PiLevel> x1 is not satisfied at step ST5-3 (NO), when timer TimeADi is started at step ST5-4, or when TimeADi is before the wait time WT has elapsed at step ST5-5 (NO), Alternatively, when the timer TimeADi is stopped in step ST5-9, the pad number i is counted up to i ← i + 1 (step ST5-10). Then, it is determined whether or not i> m (step ST5-11). If i> m is not satisfied (NO), the process returns to step ST5-2 and proceeds to the processing for the next set of rim pad RPi and plane pad HPi. . If i> m (YES), the process returns to step ST5-1.

  In the above description, after the wait time WT has elapsed (ST5-5), the value of the striking force PiLevel is detected (step ST5-8). In addition to this, before the wait time WT has elapsed. The peak value of the striking force PiLevel may be detected by monitoring the striking force PiLevel.

  FIG. 11 is a flowchart showing a subroutine of the sound generation control process (step ST2-3). In the sound generation control process, first, with the pad number i ← 1 (step ST6-1), the sound generation control process for the set of the plane pad HP1 and the rim pad RP1 is performed. In this sound generation control process as well, the hitting force detection process from the set of the plane pad HP1 and the rim pad RP1 to the set of the plane pad HP6 and the rim pad RP6 is sequentially performed by counting up from the pad number i = 1 to 6 in order. However, since the processing procedure for each group is common, in the following description, the process for each group is included and described as a pad number i.

  Here, first, it is determined whether or not the striking force detection flag Pikeyon = 1 (step ST6-2). As a result, if the striking force detection flag Pikeyon is not 1 (NO), the pad number i is incremented as it is and i = i + 1 (step ST6-3). Then, it is determined whether i> m (m = 6) or not (step ST6-4). If i> m is not satisfied (NO), the process returns to step ST6-2, and the next rim pad RPi and plane pad HPi are combined. Proceed to processing for. If i> m (YES), the process returns to step ST6-1.

  On the other hand, if the striking force detection flag Pikeyon = 1 (YES) in step ST6-2, the sound generation control process for the rim pad RPi is subsequently performed. For this, it is determined whether or not the rim pad hit flag RPiSW = 1 (step ST6-5). Here, if the timer TimeRPiSW is before the first time HTr has elapsed, the state of RPiSW = 1 is maintained by the hit flag hold processing of the rim pad RPi. As a result, if the rim pad striking flag RPiSW = 1 (YES), a tone signal based on the timbre assigned to the rim pad RPi and the detected striking force PiLevel is generated (step ST6-6). Thereafter, the timer TimeRPiSW is stopped (step ST6-7), and the striking flag holding process for the rim pad RPi is ended. Further, these values are reset as the rim pad hit flag RPiSW ← 0 and the rim pad switch-on detection count NRPi ← 0 (step ST6-8).

  Next, it is determined whether or not the flat pad hit flag HPiSW = 1 (step ST6-11). Again, if the timer TimeHPiSW has not passed the second time HTh, the state of HPiSW = 1 is maintained by the hitting flag holding process for the flat pad HPi. As a result, if HPiSW = 1 (YES), a musical tone signal based on the tone color assigned to the planar pad HPi and the hitting force PiLevel detected previously is generated (step ST6-12). Thereafter, the timer TimeHPiSW is stopped (step ST6-13), and the hitting flag holding process for the flat pad HPi is ended. Further, the flat pad hitting flag HPiSW ← 0 and the flat pad switch on detection count NHPi ← 0 are reset (step ST6-14). When the above processing is completed, the striking force detection flag Pikeyon ← 0 is set (step ST6-15). Thereafter, the pad number i is counted up to i ← i + 1 (step ST6-3). Then, it is determined whether i> m (step ST6-4). If i> m is not satisfied (NO), the process returns to step ST6-2, and the next set of rim pad RPi and plane pad HPi (i = 2). Proceed to processing for. If i> m (YES), the process returns to step ST6-1.

  As described above, in the electronic percussion instrument 1 according to the present embodiment, the switch-on received by the contact switch (striking position detecting means) SW is scanned at regular intervals in response to a striking operation on the rim pad RPi or the flat pad HPi. When the switch-on is detected continuously for the number of times (N1) or more (YES in ST4-8 or ST4-18), a process of turning on the striking flags RPiSW and HPiSW related to the rim pad RPi or planar pad HPi is performed (ST4- 9 or ST4-19), a striking flag hold process for maintaining the on state of the striking flags RPiSW and HPiSW is performed from when the striking flags RPiSW and HPiSW are turned on until a predetermined time HTr and HTh has elapsed (ST4). -10 or ST4-20). If the batting flags RPiSW and HPiSW are on (YES in ST6-5 or ST6-11) when the predetermined batting force PiLevel is detected by the batting sensor (batting force detecting means) ADi (YES in ST6-5 or ST6-11), the rim pad RPi or plane A sound generation process for generating a musical sound corresponding to the pad HPi based on the striking force PiLevel detected by the striking sensor ADi is performed.

  With such a configuration, even when the impact sensor ADi does not detect the impact force when the impact determination flag is turned on in response to the switch on of the contact sensors SWri and SWhi being switched on, a predetermined value is subsequently applied. If the striking force is detected by the striking sensor ADi while time elapses, the sound generation process for the corresponding flat pad HPi or rim pad RPi can be performed. Therefore, even when the detection of the striking force by the striking sensor ADi is delayed with respect to the continuous switch-on of the contact sensor SW, it is possible to accurately detect striking on the flat pad HPi or the rim pad RPi and perform accurate sound generation processing. .

  Further, the electronic percussion instrument 1 of the present embodiment is a multi-pad type including a plurality of rim pads RPi and flat pads HPi. As described above, the contact sensors SWri and SWhi correspond to the rim pads RPi and flat pads HPi. The hitting sensor ADi is provided in common for the rim pad RPi and the planar pad HPi of the same number, which detects their hitting force. For this reason, the contact sensors SWhi, SWri and the hit sensor ADi are installed at positions separated from each other. Further, in the electronic percussion instrument 1 of the present embodiment, the percussion sensor ADi is attached to the lower surface of each planar pad HPi. Therefore, the percussion sensor ADi is disposed at a position away from the adjacent rim pad RPi having the same number. It becomes like this. As a result, the time lag between the detection of the presence / absence of hitting by the contact sensors SWhi and SWri and the detection of the hitting force signal by the hitting sensor ADi may become significant.

  On the other hand, in the electronic percussion instrument 1 according to the present embodiment, when the switch-on that can be determined to be hit by the contact sensors SWri and SWhi is input, the hitting force is not detected by the hit sensor ADi. However, after that, if the striking force is detected by the striking sensor ADi while the predetermined time HTr, HTh elapses, sound generation processing for the striking can be performed. Therefore, it is possible to accurately perform the sound generation process when a time difference occurs in the hit detection, which is a problem in the multi-pad electronic percussion instrument 1 as in the present embodiment.

  Further, in the electronic percussion instrument 1 of the present embodiment, the batting flag RPiSW of the rim pad RPi is RPiSW ← 1 (flag on), and the batting flag HPiSW of the flat pad HPi is batting HPiSW ← 1 (flag on). The duration time of the flag hold process is made different (first time HTr, second time HTh). In this embodiment, since the rim pad RPi is farther from the hit sensor ADi than the flat pad HPi, the rim pad RPi is longer than the duration (second time HTh) of the hit flag holding process of the flat pad HPi. It may be set so that the duration (first time HTr) of the hitting flag hold process is longer. By doing so, even when it takes time until a striking force signal corresponding to the striking of the rim pad RPi is detected by the striking sensor ADi, it is possible to accurately detect striking against the rim pad RPi and perform accurate sound generation processing.

  Further, in the electronic percussion instrument 1 described above, when the sound generation process is performed on the rim pad RPi or the planar pad HPi before the predetermined time HTr, HTh elapses from when the hit determination flags RPiSW, HPiSW are turned on (ST6-6 or ST6). −12), the hit flag hold process is terminated at that time (ST6-7 or ST6-13), and the hit determination flag RPiSW, HPiSW ← 0 (flag off) is set (ST6-8 or ST6-14). It has become. In this way, even when the hit determination flag hold process is being executed, when the predetermined hitting force Pilevel is detected by the hit sensor ADi and the sound generation process is performed, the hitting flag is turned off to turn off the rim pad RPi. Alternatively, it is possible to continuously perform the sound generation process for the hitting operation of the flat pad HPi. Therefore, the sound generation process for the hitting of the rim pad RPi or the flat pad HPi performed continuously can be performed more accurately.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible.

  For example, in the above embodiment, the case where the process for the rim pad RPi is performed first and the process for the plane pad HPi is performed later in the hitting position detection process shown in FIG. 8 and the sound generation control process shown in FIG. However, this order can be reversed.

  Further, the specific configuration of the performance operator provided in the electronic percussion instrument according to the present invention is a combination of the rim pad RPi having a three-dimensional striking surface and the flat pad HPi having a planar striking surface as shown in the above embodiment. However, the present invention is not limited to this, and other configurations can be employed. Therefore, instead of the rim pad RPi and the planar pad HPi, pads having other shapes may be provided. Further, in the present embodiment, the electronic percussion instrument 1 having a configuration in which a plurality of pads RPi and HPi are arranged adjacent to each other is shown, but in addition to this, a normal electronic drum in which each pad is independently provided In addition, the present invention is applicable.

  In addition, the number of rim pads RPi and planar pads HPi shown in the above embodiment is an example, and other numbers may be used. Therefore, the electronic percussion instrument to which the present invention is applied is not limited to the electronic percussion instrument provided with the performance operator in the form shown in the above embodiment, and may be an electronic percussion instrument provided with a performance operator in another form. As an example, a drum configuration is provided by arranging a circular annular rim portion (rim pad) around a circular flat pad (planar pad) as described in Patent Document 1 (Japanese Patent Laid-Open No. 2003-108140). An electronic percussion instrument provided with a performance operator imitating

  And when applying this invention to the electronic percussion instrument of the form like patent document 1, only the hit | damage force detection means (hitting sensor AD of the said embodiment) is installed in the pad of the center, and the hit | damage position is on the rim | limb part of a periphery. If both the detection means (contact sensor SW of the above embodiment) and the striking force detection means are installed, it is possible to detect striking on both the pad and the rim portion with a simple configuration. However, in that case, when the hitting force detecting means is arranged at a position away from the rim portion, when there is a hit on the rim portion, the detection of the input signal by the hitting position detecting means installed on the rim portion is performed. The rising of the striking force waveform detected by the striking force detection means is delayed. Therefore, according to the present invention, if the hit determination flag hold process is performed after the hit detection by the hit position detecting means installed on the rim portion, the hit on the rim portion can be reliably detected.

  Further, in the above embodiment, the sound generation processing of the corresponding rim pad RPi or planar pad HPi is performed only when the switch-on by the contact sensor SW is detected. In the case of applying the invention, in particular, for the hitting of the center pad, the sound generation processing for the pad may be performed only by detecting the striking force by the striking force detecting means (striking sensor AD).

DESCRIPTION OF SYMBOLS 1 Electronic percussion instrument 10 Performance operator 30 Setting operation part 45 Main control part (control means)
45a Stroke detection processing unit 45b Sound generation control processing unit 46 Timer AD (ADi) Stroke sensor (striking force detection means)
HPi plane pad HPiSW plane pad hitting flag (hitting judgment flag)
HTh Predetermined time HTr Predetermined time NHPi Plane pad switch-on detection count NRPi Rim pad switch-on detection count Pikeyon Strike force detection flag PiLevel Strike force RPi Rim pad (three-dimensional pad)
RPiSW Rim pad hit flag (hitting judgment flag)
SW (SWri, SWhi) Contact sensor (hitting position detecting means)
TimeADi Timer TimeHPiSW Timer TimeRPiSW Timer V Hitting surface WT Wait time x1 Impact power x2 Impact power

Claims (5)

A performance operator having a striking surface;
A striking position detecting means for detecting a signal related to a striking operation position with respect to the performance operator;
A striking force detection means for detecting a signal relating to striking force according to the striking operation on the performance operator,
Control means for performing sound generation processing in accordance with the batting operation on the performance operator based on the detection by the batting position detecting means and the batting force detecting means;
With
The control means includes
In response to detection of a predetermined input signal received by the hitting position detecting means, a process for turning on a hitting determination flag for the performance operator is performed,
Between the time when the hit determination flag is turned on and until a predetermined time elapses, a hit determination flag hold process for maintaining the on state of the hit determination flag is performed,
When the predetermined hitting force is detected by the hitting force detecting means, if the hit determination flag is on, a sound generation process for generating a musical sound corresponding to the performance operator based on the predetermined hitting force is performed. Electronic percussion instrument characterized by performing. A plurality of the performance operators are provided,
The hitting position detecting means is provided separately for detecting a hitting operation for each of the plurality of performance operators,
The said striking force detection means is provided in common for detecting the striking force of any two or more performance operators among the plurality of performance operators. The electronic percussion instrument according to 1. The performance operator includes a three-dimensional pad having at least one set of three-dimensional striking surfaces and a flat pad having a planar striking surface arranged adjacent to each other,
The hitting position detecting means is provided separately for detecting a hitting operation for each of the set of three-dimensional pads and flat pads,
3. The electronic percussion instrument according to claim 2, wherein the hitting force detecting means is provided in common for detecting the hitting force of both the pair of three-dimensional pads and flat pads. The control means includes
When the process of turning on the hit determination flag of the three-dimensional pad is performed, the hit determination flag is held by the hit determination flag holding process until the first time elapses after the hit determination flag is turned on. While maintaining the on state of
When the process of turning on the hit determination flag of the flat pad is performed, the hit determination is performed from when the hit determination flag is turned on until a second time different from the first time elapses. The electronic percussion instrument according to claim 3, wherein an on state of the hit determination flag is maintained by flag hold processing. The control means includes
When the sound generation process is performed before the predetermined time has elapsed after the hit determination flag is turned on, the hit determination flag hold process is terminated at that time, and the hit determination flag is turned off. The electronic percussion instrument according to any one of claims 1 to 4.

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