JP2010128257A - Apparatus and program for producing musical sound - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing musical sound for reproducing sampling sounds of types corresponding to the number of a plurality of installed pads even if a sampling sound registered in a memory is one kind. <P>SOLUTION: When sampling waveform data stored in a sampling buffer BUF are transferred to a pad area PE designated by user control (a step SD2), a flag expressing conditions (occupied pad/unoccupied pad) of PAD1-PAD4 corresponding to the registered/unregistered conditions of pad areas PE1-PE4 of a RAM12 is maintained. From contents of a register PADF, presence/absence of an unoccupied pad is determined (a step SD5), and if there is an unoccupied pad, according to a predetermined allocation rule and an arrangement position of the unoccupied pad to the occupied pad, a sampling waveform data reading start address to be assigned to the unoccupied pad and an effect parameter (effect data reading start address) are selected to be sent to a sound source 17 (a step SD6). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a musical sound generating apparatus and a musical sound generating program suitable for use in an electronic percussion instrument.

Conventionally, waveform data sampled by performing A / D conversion on an audio signal input via a microphone is stored in a memory, and a reading speed corresponding to a pitch designation operation (for example, a key pressing operation on a keyboard) is stored. There is known a musical tone generator having a so-called sampling function that reads out waveform data from the memory so as to reproduce a sampled sound at a desired pitch. Is disclosed.

Japanese Patent Laid-Open No. 11-119777

  By the way, in the apparatus disclosed in Patent Document 1 described above, a plurality of pads that generate note-on events in response to an operation of hitting the pad surface (hereinafter referred to as pad operation) like percussion instrument performance are provided. If a plurality of memory areas for storing sampling sounds (sampled waveform data) are provided in association with each other, an electronic percussion instrument that reproduces the sampling sounds corresponding to the type of pad operated.

In such an electronic percussion instrument, the memory area for storing the sampling sound and the pad are associated with each other in a one-to-one relationship. Therefore, the pad operation of the pad (hereinafter referred to as the occupied pad) associated with the memory area in which the sampling sound is registered. The sampling sound is reproduced, but the sampling sound is not reproduced by the pad operation of the pad (hereinafter referred to as an empty pad) associated with the memory area where the sampling sound is not registered. Therefore, for example, if there is only one occupied pad among a plurality of pads, there is a problem that only one type of sampling sound can be reproduced.

The present invention has been made in view of such circumstances, and even if there is only one type of sampling sound registered in the memory, musical tone generation that can reproduce the type of sampling sound corresponding to the number of pads provided in plurality is provided. An object is to provide a device and a musical tone generation program.

In order to achieve the above object, according to the first aspect of the present invention, sound generation instruction means having a plurality of pads and instructing sound generation according to an operation of any one of the pads, and sampling obtained by sampling the input sound Storage means for storing the sound in any of the storage areas respectively associated with the plurality of pads provided in the sound generation instruction means, and either an occupied pad in which the sampling sound is registered in the corresponding storage area or an unregistered empty pad If there is a vacant pad, the sampling sound to be assigned to the vacant pad and the effect to be applied are determined according to the position of the vacant pad relative to the occupied pad. When the selection means for selecting and the sound generation instruction means instruct the sound generation in response to the operation of the occupied pad, the corresponding sound corresponding to the occupied pad is selected. Reproducing means for reproducing the sampling sound in the storage area, and on the other hand, when instructing the sound generation in response to the operation of the empty pad, the selecting means provides an effect to the sampling sound assigned to the empty pad and reproduces it. It is characterized by comprising.

In the invention according to claim 2 subordinate to claim 1, the selecting means provides the sampling sound to be assigned to the empty pad and the effect to be given according to the arrangement position of the empty pad with respect to the occupied pad according to a predetermined assignment rule. And selecting.

According to a third aspect of the present invention, sound generation instruction means having a plurality of pads and instructing sound generation in response to an operation of any one of the pads, and sampling waveform data obtained by sampling the input voice are used as the sound generation instruction. Waveform data storage means for storing in any one of storage areas respectively associated with a plurality of pads provided in the means, effect data storage means for storing a plurality of types of effect data for designating a mode for applying an effect, and the sound generation instruction means For each of the plurality of pads included in the occupancy pad, an occupied pad in which sampling waveform data is registered in a corresponding storage area of the waveform data storage means or an empty pad in which sampling waveform data is not registered in a corresponding storage area of the waveform data storage means A pad discriminating means for discriminating between the two and the pad discriminating means Selecting means for selecting the sampling waveform data and the type of effect data to be assigned to the empty pad according to the arrangement position of the empty pad with respect to the occupied pad when it is determined that there is an empty pad among the pads, When the sound generation instruction means instructs the sound generation according to the operation of the occupied pad, the sampling waveform data in the storage area corresponding to the occupied pad is read from the waveform data storage means to reproduce the sampling sound, When sounding is instructed in accordance with an operation, the sampling waveform data assigned to the empty pad by the selecting means is read from the waveform data storage means to form a sampling sound, and the selecting means applies the empty pad to the empty pad. Assign the assigned effect data to the effect data Reading from the storage means, characterized by comprising a reproducing means for reproducing by applying the effect in accordance with the effect data in the form the sampling sound.

  In the invention according to claim 4, which is dependent on claim 3, the pad discriminating means samples the input voice and inputs the sampling waveform data, and the sampling waveform data inputted by the sampling input means. Is stored in a storage area designated by a user operation from among a plurality of storage areas of the waveform data storage means, and the storage means stores sampling waveform data in a storage area designated by a user operation. Each time it is stored, it is determined whether each of the plurality of pads of the sound generation instruction means is an occupied pad or an empty pad.

According to the fifth aspect of the present invention, a sound generation instruction process for instructing sound generation in response to an operation of any one of the pads, and a sampling sound obtained by sampling the input sound are used as the plurality of pads. A storage process for storing in any of the storage areas associated with each of the plurality of pads, and determining whether the pad is an occupied pad or a non-registered empty pad in which the sampling sound is registered in the corresponding storage area, When there is a vacant pad, a selection process for selecting a sampling sound to be assigned to the vacant pad and an effect to be added according to the position of the vacant pad with respect to the occupied pad, and the sound generation instruction process is used for the operation of the occupied pad. If a sound is instructed accordingly, the sampled sound in the storage area corresponding to the occupied pad is played, while the empty pad is operated. Depending on the when instructed sound is characterized by executing a reproduction process of reproducing in effect applied to a sampling sound allocated to the empty pad by the selection process in a computer.

  In the present invention, even if there is only one type of sampling sound registered in the memory, it is possible to reproduce the type of sampling sound corresponding to the number of pads provided.

Embodiments of the present invention will be described below with reference to the drawings.
A. Constitution
FIG. 1 is a block diagram showing the overall configuration of a musical sound generating apparatus 100 according to an embodiment of the present invention. In this figure, the CPU 10 controls each part of the apparatus in accordance with an event supplied from the operation unit 14 and the pad 16 (PAD1 to PAD4). The characteristic processing operation according to the gist of the present invention will be described later. Detailed description.

As shown in FIG. 2, the ROM 11 includes a program area PDE and an effect data area EDE. The program area PDE of the ROM 11 stores various program data including a main routine, a sampling process, a pad parameter assignment process, and a pad process program, which will be described later, executed by the CPU 10.

  A plurality of types of effect data are stored in the effect data area EDE of the ROM 11. The effect data is supplied to a sound source 17 to be described later, and designates a mode in which an effect is imparted by modulating a sampling sound generated by the sound source 17. In the present embodiment, six types of effect data (-3 effect data to +3 effect data) having different effects are stored in the effect data area EDE. These six types of effect data read addresses AD (−3) to AD (+3) are each handled as an effect parameter. The purpose of the six types of effect data specified by the effect parameters will be described later.

As shown in FIG. 3, the RAM 12 includes a work area WE, a sampling buffer BUF, and a sampling waveform data area SWDE. In the work area WE, various register / flag data used for processing of the CPU 10 are temporarily stored. In the sampling buffer BUF, under the control of the CPU 10, sampling waveform data that has been taken in by the sampling input unit 15 described later to be assigned to one PAD is temporarily stored.

The sampling waveform data area SWDE includes pad areas PE1 to PE4 corresponding to the four PAD1 to PAD4 arranged on the pad 16, respectively. Sampling waveform data read start addresses AD (PAD1) to AD (PAD4) are assigned to the pad areas PE1 to PE4, respectively. Among these pad areas PE1 to PE4, the sampling waveform data of the sampling buffer BUF is transferred and stored in the pad area PE designated by the user operation.

The display unit 13 includes, for example, an LCD panel (not shown) and a display driver (not shown) that drives the LCD panel in response to a display control signal supplied from the CPU 10. The device setting status and operation status to be set are displayed on the screen. The operation unit 14 includes various switches and operation keys arranged on a console panel (not shown), and generates an event corresponding to the operation. This event is captured by the CPU 10 key scan. As a switch type arranged in the operation unit 14, in addition to a power switch (not shown), a sampling switch for instructing the start of sampling, and a switch for designating a pad area for storing sampling waveform data taken into the sampling buffer BUF Etc.

  The sampling input unit 15 amplifies the audio signal input via the microphone or the audio signal supplied from the audio input terminal to a certain level in accordance with a sampling start instruction from the CPU 10, and then performs A / A at a predetermined sampling frequency. Sampling waveform data obtained by D conversion is output. The sampling waveform data output from the sampling input unit 15 is taken into the sampling buffer BUF of the RAM 12 described above under the control of the CPU 10.

The pad 16 includes four PAD1 to PAD4 arranged in a horizontal row. Each PAD has a pad switch disposed on the pad surface, and generates a note-on event in response to a user's pad operation. In these four PAD1 to PAD4, if the sampling waveform data is registered in the corresponding pad area PE in the sampling waveform data area SWDE of the RAM 12 described above, it is referred to as an occupied pad, while the sampling is performed in the corresponding pad area PE. If the waveform data is not registered, it is called an empty pad.

The sound source 17 is configured by a well-known waveform memory reading method, and includes a plurality of sound generation channels capable of simultaneous sound generation. In the present embodiment, four tone generation channels assigned to PAD1 to PAD4 are provided. Among these sound generation channels, the sound generation channel of the occupied pad reproduces the sampling waveform data from the corresponding pad area PE of the RAM 12 in accordance with the pad operation and outputs the sampling sound. On the other hand, in the sound channel of an empty pad, the sampling waveform data of the pad area PE specified by the pad parameter assignment process described later is reproduced according to the pad operation to form a sampling sound, and the parameter assignment is performed on the formed sampling sound. An effect according to the effect data specified by the process is given and output. The sound system 18 D / A-converts the output of the sound source 17 and amplifies it to generate sound from the speaker.

B. Action
Next, the operation of the musical sound generating device 100 having the above configuration will be described with reference to FIGS. 4 is a flowchart showing the operation of the main routine executed by the CPU 10, FIG. 5 is a flowchart showing the operation of the sampling process called from the main routine, FIG. 6 is a flowchart showing the operation of the timer interrupt process, and FIG. FIG. 8 to FIG. 10 are diagrams for explaining an example of the operation of the pad parameter assignment process, and FIG. 11 shows the operation of the pad process called from the main routine. It is a flowchart to show.

(1) Main Routine Operating Device When the power supply is turned on, the CPU 10 executes the main routine shown in FIG. 4 and proceeds to step SA1 to store various registers and flags stored in the work area WE of the RAM 12. In addition to resetting and setting an initial value, the sampling buffer BUF is initialized to zero. In step SA1, the sound source 17 is instructed to initialize various registers and flags.

When the initialization is completed, the CPU 10 proceeds to step SA2 and executes a sampling process. In the sampling process, as will be described later, if the sampling is not being executed, the sampling input unit 15 is instructed to start sampling in response to the ON operation of the sampling switch, and thereby the sampling waveform data output from the sampling input unit 15 Is stored in the sampling buffer BUF of the RAM 12.

  Subsequently, in step SA3, pad parameter assignment processing is executed. In this process, as described later, when the sampling waveform data stored in the sampling buffer BUF by the sampling process in step SA2 is transferred to the pad area PE designated by the user operation, the pad areas PE1 to PE4 (see FIG. 3), if there is an empty pad by determining the presence or absence of an empty pad from the contents of the register PADF that holds a flag indicating the state of PAD1 to PAD4 (occupied pad / empty pad) corresponding to the registered / unregistered state In accordance with a predetermined allocation rule, the sampling waveform data read start address and the effect parameter (effect data read start address) to be assigned to the empty pad are selected according to the arrangement position of the empty pad with respect to the occupied pad, and the sound source 17 is selected. Send to.

  In step SA4, when a pad operation that generates a note-on event is performed, it is determined whether the operated pad is an occupied pad or an empty pad. On the other hand, if it is an empty pad, the sound source 17 is instructed to generate the sampling sound using the sampling waveform data assigned to the empty pad, and the empty pad is also instructed. Pad processing for instructing the sound source 17 to apply an effect according to the assigned effect data is executed. Next, in step SA5, for example, other processing such as screen display of the assignment state / operating state of the occupied pad / free pad based on the contents of the register PADF is executed. Thereafter, steps SA2 to SA9 are repeatedly executed until the apparatus power is turned off.

(2) Operation of Sampling Process Next, the operation of the sampling process will be described with reference to FIGS. When this process is executed via step SA2 (see FIG. 4) of the main routine described above, the CPU 10 proceeds to step SB1 shown in FIG. 5 and determines whether or not the flag SMPF is “0”. As will be described later, the flag SMPF is a flag indicating that sampling is being executed when it is “1”, and that sampling is being stopped when it is “0”. Therefore, in step SB1, it is determined whether sampling is stopped.

  Here, if the flag SMPF is “1” (sampling is being executed), the determination result is “NO”, and the present process ends. That is, during sampling execution, the operation of the sampling switch that instructs the start of sampling is invalidated. On the other hand, if the flag SMPF is “0” (sampling is stopped), the determination result in step SB1 is “YES”, and the process proceeds to the next step SB2, where it is determined whether or not the sampling switch is turned on. If the sampling switch is not turned on, the determination result is “NO”, and the present process is completed. If the sampling switch is turned on, the determination result is “YES”, and the process proceeds to Step SB3.

  In step SB3, the sampling input unit 15 is instructed to start sampling. As a result, the sampling input unit 15 amplifies the audio signal input via the microphone or the audio signal supplied from the audio input terminal to a certain level and then performs A / D conversion at a predetermined sampling frequency. Output data. Next, in step SB4, the timer interrupt prohibition is canceled. As a result, the CPU 10 executes the timer interrupt processing shown in FIG. 6 for each timer clock, and increments the timer counter TIME in step SC1 to measure time.

  When the timer counter TIME starts to measure the sampling period in this way, the CPU 10 proceeds to step SB5 shown in FIG. 5 and sets “1” in the flag SMPF to indicate that sampling is being performed. Subsequently, in steps SB6 to SB7, the sampling waveform data output from the sampling input unit 15 is sequentially stored in the sampling buffer BUF of the RAM 12 until the value of the timer counter TIME reaches a predetermined value, that is, until the sampling period elapses. To do.

When the value of the timer counter TIME reaches a predetermined value and the sampling period elapses, the determination result in step SB7 becomes “YES”, the process proceeds to step SB8, the timer counter TIME is reset to zero, and the timer interrupt is disabled. To do. Thereby, the timer interrupt process shown in FIG. 6 is completed. Next, at step SB9, “1” is set to the flag BFF, and the flag SMPF is reset to zero, and this process is finished. The flag BFF indicates that the sampling waveform data is stored in the sampling buffer BUF when “1”, and indicates the buffer clear state when “0”.

(3) Operation of Pad Parameter Assignment Process Next, the operation of the pad parameter assignment process will be described with reference to FIG. When this process is executed through step SA3 (see FIG. 4) of the main routine described above, the CPU 10 proceeds to step SD1 shown in FIG. 7, and the flag BFF is “1”, that is, the sampling process of the RAM 12 is performed. It is determined whether or not the sampling waveform data is stored in the sampling buffer BUF. If the flag BFF is “0” in the buffer clear state, the determination result is “NO”, and this processing ends. If the sampling waveform data is stored, the determination result is “YES”, and the step Proceed to SD2.

  In step SD2, the sampling waveform data stored in the sampling buffer BUF of the RAM 12 is transferred to the pad area PE designated by the user operation. If the sampling waveform data has already been stored in the pad area PE designated by the user operation, the new sampling waveform data stored in the sampling buffer BUF is overwritten. In step SD3, the sampling buffer BUF is cleared to zero and the flag BFF is reset to zero.

  Next, in step SD4, flags representing the states of PAD1 to PAD4 (occupied pads / empty pads) corresponding to the registered / unregistered states of the pad areas PE1 to PE4 (see FIG. 3) of the RAM 12 are set in the register PADF. The register PADF is a 4-bit register, and the MSB holds a flag indicating the PAD1 state, 3SB the PAD2 state, 2SB the PAD3 state, and LSB the PAD4 state. In this flag, “1” indicates an occupied pad and “0” indicates an empty pad. For example, when sampling waveform data is registered only in the pad area PE1, the contents of the register PADF are "1000 (binary display)" because PAD1 is an occupied pad and the other PAD2 to PAD4 are empty pads.

  Subsequently, in step SD5, the presence / absence of an empty pad is determined based on the contents of the register PADF. If the sampling waveform data has already been registered in all the pad areas PE1 to PE4 of the RAM 12 and there is no empty pad, the determination result is “NO”, and the present process is terminated.

On the other hand, if there is an empty pad, the determination result in step SD5 is “YES”, and the flow proceeds to step SD6. In step SD6, the sampling waveform data read start address assigned to the empty pad and the effect parameter (effect data read address) are selected according to the arrangement position of the empty pad with respect to the occupied pad according to a predetermined assignment rule, and the sound source 17 is selected. Send to.

Here, a specific assignment operation in step SD6 will be described with reference to FIGS. Note that the allocation operation is based on the positional relationship of PAD1 to PAD4 arranged in a horizontal row, and the sampling waveform data read start address and the effect parameter (effect parameter) for the empty pad based on the following allocation rules (a) to (c) Data read address).
(A) The sampling waveform data read start address of the nearest occupied pad is assigned to an empty pad.
(B) A kind of effect parameter (effect data read address) determined by the position of the pad from the occupied pad is assigned to the empty pad.
(C) When an occupied pad exists at the same position on the left and right with respect to the empty pad, the occupied pad on the left side as viewed from the empty pad is preferentially set as a reference for assignment.

Hereinafter, as typical examples of the allocation operation, case 1 (in the case of occupied pad PAD1, empty pads PAD2 to PAD4), case 2 (in the case of occupied pads PAD1, 3 and empty pads PAD2, 4) and case 3 (occupied pad PAD4, The case of empty pads PAD1 to PAD3 will be described.

<Case 1 (in the case of occupied pad PAD1, vacant pads PAD2 to PAD4)>
In this case, the sampling waveform data read start address AD (PAD1) of the occupied pad PAD1 is commonly assigned to the empty pads PAD2 to PAD4. The read address AD (+1) of the +1 effect data is assigned to the empty pad PAD2 arranged immediately to the right of the occupied pad PAD1. Similarly, the vacant pads PAD3 to PAD4 are arranged on the right side and the right side of the occupied pad PAD1, respectively, so that the +2 effect data read address AD (+2) and the +3 effect data read address AD (+3 ) Are assigned to each.

<Case 2 (in the case of occupied pads PAD1, 3 and empty pads PAD2, 4)>
In this case, since the occupied pad PAD1 exists to the left of the empty pad PAD2, the sampling waveform data read start address AD (PAD1) of the occupied pad PAD1 is assigned to the empty pad PAD2. Similarly, the sampling waveform data read start address AD (PAD3) of the occupied pad PAD3 is assigned to the empty pad PAD4. The read address AD (+1) of the +1 effect data is assigned to the empty pad PAD2 arranged immediately to the right of the occupied pad PAD1. The read address AD (+1) of the +1 effect data is assigned to the empty pad PAD4 arranged to the right of the occupied pad PAD3.

<Case 3 (in the case of occupied pad PAD4, empty pads PAD1 to PAD3)>
In this case, the sampling waveform data read start address AD (PAD4) of the occupied pad PAD4 is commonly assigned to the empty pads PAD1 to PAD3. The read address AD (−1) of the −1 effect data is assigned to the vacant pad PAD3 arranged to the left of the occupied pad PAD4. The read address AD (−2) of the −2 effect data is assigned to the empty pad PAD2 arranged to the left of the occupied pad PAD4 by two. The read address AD (−3) of the −3 effect data is assigned to the empty pad PAD1 that is arranged three adjacent to the left of the occupied pad PAD4.

  Thus, in the pad parameter assignment process, when the sampling waveform data stored in the sampling buffer BUF of the RAM 12 is transferred to the pad area PE specified by the user operation, the pad areas PE1 to PE4 (see FIG. 3) of the RAM 12 are transferred. The presence / absence of an empty pad is determined from the contents of the register PADF that holds a flag indicating the states of PAD1 to PAD4 (occupied pad / empty pad) corresponding to the registered / unregistered state. The sampling waveform data read start address assigned to the empty pad and the effect parameter (effect data read address) are selected and sent to the sound source 17 in accordance with the assignment rule of the empty pad with respect to the occupied pad.

(4) Pad Processing Operation Next, the pad processing operation will be described with reference to FIG. When this processing is executed via step SA4 (see FIG. 4) of the main routine described above, the CPU 10 proceeds to step SE1 shown in FIG. 11 to determine whether there is a pad operation, that is, whether a note-on event has occurred. to decide. If no note-on event has occurred, the determination result is “NO”, and the process ends.

  On the other hand, when a note-on event occurs in response to a pad operation, it is determined by referring to the contents of the register PADF whether the pad that generated the note-on event is an occupied pad or an empty pad. If the pad on which the note-on event has occurred is an occupied pad, the process proceeds to step SE3, and the sound source 17 is instructed to generate a sampling sound corresponding to the operated occupied pad.

For example, in the example shown in FIG. 8, when the pad PAD 1 that is the occupied pad generates a note-on event in response to the pad operation, the sound source 17 is stored in the RAM 12 according to the sampling waveform data read start address AD (PAD 1) given from the CPU 10. The sampling waveform data is read out from the pad area PE1 and the sampling sound is reproduced.

  On the other hand, if the pad on which the note-on event has occurred is an empty pad, the process proceeds to step SE4 to instruct the sound source 17 to generate a sampling sound using the sampling waveform data assigned to the operated empty pad, and the subsequent step SE5. Then, the sound source 17 is instructed to apply the effect according to the effect data assigned to the operated empty pad.

For example, in the example shown in FIG. 8, when PAD 4 that is a vacant pad generates a note-on event in response to a pad operation, the sound source 17 uses the RAM 12 according to the sampling waveform data read start address AD (PAD 1) given from the CPU 10. The sampling waveform data is read out from the pad area PE1 to form a sampling sound, and an effect according to the +3 effect data is applied to the formed sampling sound and output.

  As described above, in the pad processing, it is determined whether the pad operated pad is an occupied pad or an empty pad. If the pad operation is performed for the occupied pad, the sound source 17 outputs the sampling sound corresponding to the occupied pad. On the other hand, if it is a pad operation of an empty pad, the sound source 17 is instructed to generate a sampling sound using the sampling waveform data assigned to the empty pad, and the effect data assigned to the empty pad is followed. The sound source 17 is instructed to apply the effect.

  As described above, in the present embodiment, the flags indicating the states of PAD1 to PAD4 (occupied pads / empty pads) corresponding to the registered / unregistered states of the pad areas PE1 to PE4 (see FIG. 3) of the RAM 12 are retained. Whether or not there is an empty pad is determined from the contents of the register PADF, and if there is an empty pad, reading of sampling waveform data to be assigned to the empty pad is started according to the arrangement position of the empty pad with respect to the occupied pad according to a predetermined allocation rule. An address and an effect parameter (effect data read start address) are selected and sent to the sound source 17.

When a pad operation that generates a note-on event is performed, it is determined whether the operated pad is an occupied pad or an empty pad, and if it is an occupied pad, the sampling sound corresponding to the occupied pad is pronounced. The sound source 17 is instructed. On the other hand, if it is an empty pad, the sound source 17 is instructed to generate a sampling sound using the sampling waveform data assigned to the empty pad, and the effect data assigned to the empty pad is followed. The sound source 17 is instructed to give an effect. Therefore, when a pad operation is performed on a vacant pad, a sound imparted to the sampling sound of the occupied pad assigned to the vacant pad is generated, so even if there is only one type of sampling sound registered in the memory, a plurality of pads are provided. It is possible to play back a type of sampling sound corresponding to the number.

In addition, since the type of effect parameter assigned to the empty pad varies depending on the position of the empty pad relative to the occupied pad, the sampling sound generated varies depending on the position of the empty pad to be operated. There is also an effect that you can enjoy playing the pad.

Further, in the above-described embodiment, when the sampling waveform data stored in the sampling buffer BUF of the RAM 12 is transferred to the pad area PE designated by the user operation, the registration / registration of the pad areas PE1 to PE4 (see FIG. 3) of the RAM 12 is performed. Since the presence / absence of an empty pad is determined from the contents of the register PADF that holds a flag indicating the states of PAD1 to PAD4 (occupied pad / empty pad) corresponding to the unregistered state, new sampling waveform data is taken into the pad area PE. The state (occupied pad / empty pad) of PAD1 to PAD4 can be updated every time.

  In the above-described embodiment, when there is an occupied pad at the same position on the left and right with respect to the empty pad, the rule is to preferentially assign the left occupied pad as viewed from the empty pad. It may be a rule to give priority to the right occupied pad as viewed from the empty pad.

  Further, in the present embodiment, in order to simplify the description, it is assumed that PAD1 to PAD4 arranged on the pad 16 are arranged in a horizontal row, but the gist of the present invention is not limited to this, for example, When a plurality of PADs are arranged in n rows and m columns, the sampling waveform data read start address to be assigned to the empty pad and the effect parameter (effect parameter) according to the arrangement position of the empty pad with respect to the occupied pad for each column of each row. The data read start address) may be selected and sent to the sound source 17.

It is a block diagram which shows the structure of one Embodiment of this invention. 3 is a memory map showing a configuration of a storage area of a ROM 11. 3 is a memory map showing a configuration of a storage area of a RAM 12; It is a flowchart which shows operation | movement of a main routine. It is a flowchart which shows operation | movement of a sampling process. It is a flowchart which shows the operation | movement of a timer interruption process. It is a flowchart which shows the operation | movement of a pad parameter assignment process. It is a figure for demonstrating an example of operation | movement of a pad parameter assignment process. It is a figure for demonstrating an example of operation | movement of a pad parameter assignment process. It is a figure for demonstrating an example of operation | movement of a pad parameter assignment process. It is a flowchart which shows the operation | movement of a pad process.

Explanation of symbols

10 CPU
11 ROM
12 RAM
13 Display unit 14 Operation unit 15 Sampling input unit 16 Pad (PAD1 to PAD4)
17 Sound source 18 Sound system 100 Musical sound generator

Claims (5)

A sound generation instruction means having a plurality of pads and instructing sound generation according to an operation of any one of the pads;
Storage means for storing the sampling sound obtained by sampling the input sound in any of the storage areas respectively associated with the plurality of pads provided in the pronunciation instruction means;
It is determined for the plurality of pads of the sound generation instruction means whether the sampling sound is registered in the corresponding storage area or an unregistered empty pad, and if there is an empty pad, a free space for the occupied pad is found. A selection means for selecting a sampling sound to be assigned to the empty pad and an effect to be provided according to the arrangement position of the pad,
When the sounding instruction means instructs to sound in accordance with the operation of the occupied pad, the sampled sound in the storage area corresponding to the occupied pad is reproduced, while on the other hand, the sounding is instructed in response to the operation of the empty pad. Comprises a reproducing means for effecting and reproducing the sampling sound assigned to the empty pad by the selecting means.   2. The musical tone generation according to claim 1, wherein the selecting means selects a sampling sound to be assigned to the empty pad and an effect to be applied according to a position of the empty pad with respect to the occupied pad according to a predetermined assignment rule. apparatus. A sound generation instruction means having a plurality of pads and instructing sound generation according to an operation of any one of the pads;
Waveform data storage means for storing sampling waveform data obtained by sampling input speech in any of storage areas respectively associated with a plurality of pads provided in the sound generation instruction means;
Effect data storage means for storing a plurality of types of effect data for designating the mode of effect application;
For each of the plurality of pads provided in the sound generation instruction unit, the sampling waveform data is not stored in the occupied pad in which the sampling waveform data is registered in the corresponding storage area of the waveform data storage unit or in the storage area corresponding to the waveform data storage unit. Pad discriminating means for discriminating which of the registered free pads,
When the pad determining means determines that there are empty pads among the plurality of pads, the sampling waveform data assigned to the empty pad and the type of effect data are selected according to the position of the empty pad with respect to the occupied pad. Selection means to
When the sound generation instruction means instructs sound generation in response to the operation of the occupied pad, the sampling waveform data in the storage area corresponding to the occupied pad is read from the waveform data storage means and the sampling sound is reproduced. When sounding is instructed according to the operation of the pad, the sampling means reads the sampling waveform data assigned to the empty pad from the waveform data storage means to form a sampling sound, and the selection means Musical tone generation comprising: a reproduction means for reading out the effect data of the type assigned to the pad from the effect data storage means and adding the effect according to the effect data to the formed sampling sound for reproduction apparatus. The pad discriminating means is
Sampling input means for sampling input sound and inputting sampling waveform data;
Storage means for storing the sampling waveform data input by the sampling input means in a storage area designated by a user operation from a plurality of storage areas of the waveform data storage means;
Each time the storage means stores sampling waveform data in a storage area designated by a user operation, it is determined whether each of the plurality of pads of the sound generation instruction means is an occupied pad or an empty pad. The musical tone generator according to claim 3. A sound generation instruction process having a plurality of pads and instructing sound generation according to an operation of any one of the pads;
A storage process for storing the sampling sound obtained by sampling the input sound in any of the storage areas respectively associated with the plurality of pads;
It is determined for the plurality of pads whether the sampling sound is registered in the corresponding storage area or an unregistered empty pad. If there is an empty pad, the position of the empty pad relative to the occupied pad is determined. And a selection process for selecting the sampling sound to be assigned to the empty pad and the effect to be applied,
When the sound generation instruction process instructs sound generation according to the operation of the occupied pad, the sampled sound in the storage area corresponding to the occupied pad is played, while when sound generation is specified according to the operation of the empty pad A program for generating a musical sound, comprising: causing a computer to execute a reproduction process of adding an effect to the sampling sound assigned to the empty pad by the selection process and reproducing the sampled sound.

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