JP4419808B2 - Electronic percussion instrument - Google Patents

Description

  The present invention relates to an electronic percussion instrument that generates a musical tone in response to a hit, and more particularly to a hi-hat pronunciation management.

  In general, an electronic musical instrument often simulates the tone of an acoustic musical instrument. Acoustic musical instruments can produce a variety of musical tones due to subtle differences in performance techniques. Electronic musical instruments, like acoustic instruments, are desired to be able to produce a variety of musical tones depending on subtle performance techniques.

  For example, in a percussion instrument hi-hat, when the foot pedal attached to the hi-hat is depressed, the upper and lower hi-hat cymbals are closed and a musical sound is emitted. At this time, the tone and volume of the musical sound that is emitted when the hi-hat cymbal is closed differs depending on whether the hi-hat cymbal is struck before the foot pedal is depressed and the musical sound is emitted. . Further, when the player is hit before depressing the foot pedal, the tone color and volume change depending on the strength of the hit and the time since the hit.

Therefore, in electronic percussion instruments, it is desired that the tone generated when the foot pedal is closed as described above varies depending on the state of hitting before the foot pedal is closed. In addition, an electronic percussion instrument that is controlled in accordance with the volume of a musical sound being generated has been proposed (for example, Patent Document 1).
JP-A-6-35449

  However, the electronic percussion instrument described in Patent Document 1 changes the hit sound at that time depending on the position of the foot pedal, or changes the tone color of a musical sound generated when the foot pedal is depressed depending on the presence or absence of the hit sound. Therefore, there is a problem that the same tone is emitted when the foot pedal is depressed, and an unnatural musical sound is generated depending on the situation, regardless of the musical tone to be emitted before the foot pedal is depressed.

  An object of the present invention is to provide an electronic percussion instrument that emits various musical tones depending on the situation when a foot pedal is depressed.

The invention according to claim 1 is a batting recognition unit that detects batting and outputs batting information, an operation recognizing unit that detects stepping operation and outputs stepping operation information, and a musical tone information storage unit that stores musical tone information An electronic percussion instrument comprising a musical tone output unit that reads out musical tone information from the musical tone information storage unit and generates a musical tone, and a control unit that controls the musical tone output unit, wherein the control unit detects the hitting Select the musical sound information to be read out by the musical sound output unit according to the hit information, and instruct the musical sound output unit. When the operation recognition unit detects the stepping operation, press the step if the musical sound output unit does not produce the musical sound. Select the musical tone information to be read by the musical tone output unit according to the operation information, and instruct the musical tone output unit. If the musical tone output unit is producing a musical tone, stop the musical tone and then cancel the muted musical tone. Run the music information selection process, which instructs the tone output unit to select a new music information to be read tone output section in accordance with information and a depressing operation information including the volume, the tone information selecting process, said depression According to the operation information, it is a process for selecting musical tone information of a tone color by a stepping operation or a tone color in which a musical tone that has been generated attenuates .

  In the present invention, it is checked whether or not a musical sound is being generated when the foot pedal is depressed to close the hi-hat (hereinafter referred to as pedal closing), and when the musical sound is not reproduced, the musical sound is generated according to the pedal depression strength. If a musical tone is being reproduced when the pedal is closed, a new musical tone is generated according to the information including the volume of the musical tone and the depression intensity.

  As described above, according to the present invention, since the waveform to be generated by the pedal close is selected with reference to the information on the sound generated during the pedal close operation, various musical sounds can be generated according to the situation. Can reproduce the acoustic hi-hat more naturally.

  Hereinafter, an electronic drum according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of the electronic drum of this embodiment. Hi-hat pad 1 for recognizing striking, A / D converter 2 for converting the striking input to hi-hat pad 1 into digital information, foot pedal 3 for recognizing pedal depressing strength, pedal depressing amount indicating pedal depressing amount, pedal An A / D converter 4 that converts closed information into digital information, a CPU 5 that controls the operation of the electronic drum, a program memory 6 that is a main storage unit that stores an operation program, and a program that is temporarily stored during operation Work memory 7, sound generation control unit 8 for selecting a reproduction waveform to be sounded in response to an impact or pedal closing, waveform memory 9 for storing a large number of drum sound reproduction waveforms, and musical sound for outputting the selected reproduction waveform as musical sound An output unit 10 is provided.

  When the electronic drum is turned on, the CPU 5 reads the operation program from the program memory 6 and temporarily stores it in the work memory 7. The program memory 6 is a nonvolatile ROM (Read Only Memory) and is read-only. The work memory 7 is a RAM (Random Access Memory), and temporarily stores various information according to the processing operation of the CPU 5.

  When the performer strikes the hi-hat pad 1, striking information as digital information is transmitted to the sound generation control unit 8 according to the striking strength. Also, when the foot pedal 3 is closed, the pedal close information is transmitted to the sound generation control unit 8 according to the depression strength. The sound generation control unit 8 selects a waveform from the waveform memory 9 according to the hit information and pedal close information, and outputs the waveform to the musical sound output unit 10. The waveform memory 9 is a nonvolatile ROM and is read-only. The musical sound output unit 10 reproduces the waveform to generate a drum sound.

  FIG. 2 is a diagram showing the time change of the sound volume when the pedal is closed. In the figure, the horizontal axis represents time and the vertical axis represents volume. The dotted line indicates the time when the pedal is closed. When the performer closes the pedal as shown in the figure, a hi-hat cymbal closing sound is reproduced according to the depression strength. As described above, when the pedal is closed in a state where no musical sound is being generated, the sound generation control unit selects and reproduces a waveform corresponding to the stepping intensity.

  FIG. 3 is a diagram showing a change in volume over time when the pedal is closed after hitting the hi-hat pad 1. FIG. 4A shows the change in volume over time when the pedal is closed after a strong hit. The dotted line indicates the time when the pedal is closed. When the pedal is closed after a strong hit as shown in FIG. 6A, a cymbal close sound having a large volume and a sharp tone is reproduced. When the pedal is closed while a musical tone is being generated in this way, the tone generation control unit 8 stops the musical tone being generated, selects a waveform according to information such as the volume of the stopped musical tone and the stepping intensity, and creates a new one. Play a musical sound. In this embodiment, the information such as the volume of the musical sound that is sounded when the pedal is closed is based on the striking strength and the elapsed time after the striking immediately before the striking. For example, the striking position and playing method are also considered. Alternatively, it may be based on the waveform (timbre) reproduced when the pedal is closed and its amplitude.

  FIG. 5B shows a change in volume over time when the pedal is closed after a weak hit. In this case as well, as described above, the musical sound produced when the pedal is closed is stopped, and a new musical sound is generated by selecting a waveform according to information such as the volume of the stopped musical sound and the stepping intensity. When the pedal is closed after a weak hit as shown in FIG. 5B, a cymbal close sound having a small volume and a sharp tone is reproduced.

  FIG. 4 is a diagram showing the time change of the volume when the pedal is weakly closed after hitting the hi-hat. FIG. 4A shows the change in volume over time when the pedal is weakly closed after a strong hit. In this case as well, as described above, the musical sound produced when the pedal is closed is stopped, and a new musical sound is generated by selecting a waveform according to information such as the volume of the stopped musical sound and the stepping intensity. However, when the pedal is closed weakly, the sound generated by the pedal closing itself is inconspicuous, and a musical sound that sounds as if the musical sound that has been generated attenuates is generated. FIG. 5B shows the change in volume over time when the pedal is weakly closed after a weak hit. In this case as well, as described above, the musical sound produced when the pedal is closed is stopped, and a new musical sound is generated by selecting a waveform according to information such as the volume of the stopped musical sound and the stepping intensity. Even when the pedal is weakly closed after such a weak strike, the sound due to the pedal close itself is not noticeable, and a musical sound that sounds as if the musical sound that has been sounding attenuates is generated.

  FIG. 5 is a flowchart showing the operation of the electronic drum according to the embodiment of the present invention. When a hit is recognized on the hi-hat pad 1 (s1), the hit information is detected (s2). Although this embodiment shows an example in which the hit information is detected from the hit strength, the hit information may be detected from the hit strength and the hit position, and different hit information may be detected depending on the performance technique. . Specifically, different striking information is detected when the ball is hit with the tip of the drumstick and when the ball is hit with the handle portion of the drumstick. In addition, you may consider the depression amount of the foot pedal at the time of impact. Thereafter, a waveform to be reproduced is selected according to the hit information (s3). When a strong hit is made, a waveform that produces a musical tone with a sharp tone is selected. When a weak strike is made, a waveform that produces a mild tone is selected. Further, the batting information is temporarily stored in the work memory 7 (s4). At this time, if the hit information of the previous hit is already stored in the work memory 7, the hit information is updated and stored. Thereafter, an elapsed time after hitting (hereinafter referred to as PadTime) is set to 0 (s5), and the selected waveform is reproduced to generate a musical sound (s6). After these processes are completed, PadTime is incremented by 1 (s7) and the operation is repeated.

  If no hit is recognized on the hi-hat pad 1, it is determined whether or not the foot pedal is depressed and the pedal is closed (s8). If the pedal is not closed, the operation is repeated by adding 1 to PadTime. If it is recognized that the pedal has been closed, pedal closing processing is executed (s9), and then PadTime is incremented by 1 to repeat the operation. In the present embodiment, it is recognized that the pedal is closed when the foot pedal 3 exceeds a predetermined depression amount. However, a step may be provided in the depression amount so that it can be recognized as half-closed.

  FIG. 6 is a flowchart showing the pedal closing process. When the pedal close is recognized, the depression strength is detected (s10). Thereafter, it is determined whether or not the musical sound is being generated (s11). If the musical sound is being generated, the striking information temporarily stored in the work memory 7 is referred to (s12). In the present embodiment, the previous striking strength temporarily stored in the work memory 7 is referred to. Thereafter, a waveform to be sounded is selected according to the stepping strength, the striking strength, and the PadTime (s13). As described above, for example, when the immediately preceding striking strength is strong and the stepping strength is strong, a waveform that generates a tone sound with a large volume and a sharp tone is selected. After selecting the waveform, the striking sound being sounded is stopped (s14), and the pedal close sound is reproduced (s15).

  If the hitting sound is not being reproduced when the pedal close is recognized, a waveform to be generated is selected according to the depression intensity (s16), and the selected waveform is reproduced to generate a musical sound (s17).

  In addition to the above example, the musical information of the foot splash may be temporarily stored in the work memory 7 such that the musical sound is also generated by pedal opening (hereinafter referred to as foot splash) immediately after the pedal is closed. If a musical sound is generated by foot splash when the pedal is closed, a waveform to be generated may be selected and generated according to the stepping strength, the strength of the foot splash, and the elapsed time after the foot splash.

  As described above, the electronic drum according to the present invention temporarily stores the impact strength when the impact is made, and generates a waveform according to the impact strength in addition to the depression strength and the elapsed time after the impact when the pedal is closed. The acoustic hi-hat can be reproduced more naturally.

Electronic drum block diagram A diagram showing the change in volume over time when the pedal is closed The figure which showed the time change of the volume when the pedal is closed after hitting the hi-hat The figure which showed the time change of the volume when the pedal is weakly closed after hitting the hi-hat Flow chart showing operation of electronic drum Flow chart showing pedal closing process

Explanation of symbols

1-Hi-hat pad 2-A / D converter 3-Foot pedal 4-A / D converter 5-CPU
6-Program memory 7-Work memory 8-Sound generation control unit 9-Waveform memory 10-Musical sound output unit

Claims (1)

A hit recognition unit that detects a hit and outputs hit information, an operation recognizer that detects a stepping operation and outputs stepping operation information, a tone information storage unit that stores tone information, and a tone information from the tone information storage unit An electronic percussion instrument comprising a musical sound output unit that reads out a musical sound and a control unit that controls them,
The control unit is a process of selecting musical tone information to be read by the musical tone output unit in accordance with the batting information and instructing the musical tone output unit when the hit recognition unit detects a hit,
When the operation recognition unit detects a stepping operation, if the musical tone output unit does not produce a musical tone, a process for selecting musical tone information to be read by the musical tone output unit according to the stepping operation information and instructing the musical tone output unit;
If the tone output unit is generating a tone, after stopping the tone generation, select the new tone information to be read by the tone output unit according to the information including the volume of the muted tone and the stepping operation information. Music information selection process to instruct the music output section,
The execution,
The musical tone information selection process is a process of selecting musical tone information of a tone color by a stepping operation or a tone color by which a musical tone that has been generated is attenuated according to the stepping operation information. .

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