JPH04240892A - digital drum - Google Patents

Abstract

PURPOSE:To offer the digital drum which generates an electronic drum sound by beating and facilitates, specially, varying operation for timbre, rhythm, etc., by a player by enabling easy continuous performance since switch operation is performed without reholding sticks, and enabling even a beginner to play drum phrases. CONSTITUTION:This digital drum has a pad part 10 having pressure sensing elements 101-104 which turn on and off according to beating pressure, a sound generating means 12 which generates a single drum sound when the pad part 10 is beaten, a switch part 11 having pressure sensing elements 111-11n which turn on and off according to the beating pressure, and a varying means 13 which varies the single drum sound generated by the sound generating means 12. Further, this drum is equipped with a sound generating means 14 which generates a continuous drum phrase sound when the pad part 10 is beaten and a varying means 15 which varies the drum phrase sound when the switch part 11 is beaten.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital drum that generates an electronic percussion sound when struck, and more particularly to a digital drum that allows a player to easily change the tone, rhythm, etc.

[0002] In recent years, the digitization of musical instruments has progressed, and electronic pianos,
Not only electronic organs but also percussion instruments such as drums and xylophones have been digitized and put into practical use.

[0003] Such electronic percussion instruments include, for example, sticks,
The sound is produced using a striking means such as a mallet, and
It is common to have an operation panel so that you can change the tone, rhythm, etc. of the sound. During the performance, the performer operates the operation panel to select a desired tone, rhythm, etc. Therefore, there is a need for an electronic percussion instrument that can easily select and change the tone, rhythm, etc. even during a performance.

0004

2. Description of the Related Art Conventionally, a digital drum as shown in FIG. 5 has been known as one of electronic percussion instruments. This FIG. 5 is an external view seen from above.

In the figure, 50 is a digital drum main body, and this main body 50 is provided with a plurality of (four in the figure) pads 511 to 514. These pads 5
Reference numerals 11 to 514 indicate parts that the performer hits with, for example, a stick, and when these pads 511 to 514 are hit, electronic percussion instrument sounds are produced. Each of the pads 511 to 514 is assigned a different tone, corresponding to, for example, an acoustic drum, such as a snare drum, tom tom, bass drum, or cymbal. This assignment can be changed arbitrarily using the operation panel 52.

[0006] 52 is an operation panel, which includes various switches,
It has a configuration with a display etc. The operation panel 52 is used to perform various controls on the digital drum. For example, the pad 511
~514 It is now possible to specify the type of tone to be assigned and adjust the volume. In addition, from this operation panel 52, a built-in rhythm generator (
(not shown) allows the type of rhythm to be produced to be changed.

[0007] Reference numeral 53 is a rhythm list, which is a list of correspondences between numbers specified on the operation panel 52 and rhythm types. The performer should use this rhythm list 53.
By operating the operation panel 52 while referring to the above, it is possible to perform a drum performance while playing a favorite rhythm.

However, with such conventional digital drums, if you want to change the tone, volume, or rhythm type during a performance, you have to change the stick in your hand and operate the switch with your finger, so you have to change the stick in your hand and operate the switch with your finger. The drawback was that it was difficult to perform.

[0009] Furthermore, although the conventional digital drums described above perform sound processing electronically, the performance form is the same as that of ordinary acoustic drums, so beginners, for example, cannot play difficult drum phrases. The drawback was that the enjoyment of playing was limited.

0010

[Problems to be Solved by the Invention] The present invention aims to solve the problem that, as mentioned above, conventional digital drums do not change the tone, volume, etc. during performance.
Or, if you try to change the rhythm, you have to change the stick in your hand and operate the switch with your fingers, making it difficult to play continuously. The shape is the same as a regular acoustic drum, so for example, beginners cannot play difficult drum phrases, which limits the enjoyment of playing. To provide a digital drum that can be easily operated and continuously played, and allows even beginners to play difficult drum phrases.

[0011]

[Means for Solving the Problems] In order to achieve the above object, the digital drum of the present invention has a pressure-sensitive element that is turned on or off in accordance with applied pressure, as shown in FIG. a pad section 10 having a
Sound generation means 1 that generates a single note impact sound when 0 is pressed
2, a switch section 11 having a pressure-sensitive element that turns on or off in accordance with applied pressure; and a changing means 13 for changing the single-note percussion sound generated by the sounding means 12 when the switch section 11 is pressed. It is characterized by having the following.

Further, for the same purpose, a pad section 10 having a pressure-sensitive element that turns on or off in accordance with applied pressure, and a sounding means 14 that generates a continuous hitting sound when the pad section 10 is pressed are provided. a switch section 11 having a pressure-sensitive element that turns on or off in accordance with applied pressure; and a changing means 15 for changing the continuous impact sound generated by the sounding means 14 when the switch section 11 is pressed. It is characterized by having the following.

[0013]

[Operation] In the present invention, a single note percussion sound is generated by pressing or hitting the pad section 10, and the sound generated by the sound generating means 12 can be changed by pressing or hitting the switch section 11. It is. This allows you to change the sound, for example, the tone, volume, rhythm, etc., by hitting the switch part 11 in the same way as hitting the pad part 10 with a stick held in your hand, so you can perform continuously. It is possible.

[0014] Furthermore, it is specified that the sound to be generated by hitting the switch part 11 is a continuous hitting sound, and then by hitting the pad part 10, the sounding means 14 generates a continuous hitting sound. By defining, for example, a drum phrase as a continuous percussion sound, even beginners can play difficult drum phrases.

[0015]

[Embodiment] Fig. 2 is an external view of an embodiment of the digital drum of the present invention, and Fig. 2(a) is an external perspective view, and Fig. 2(b) is an external perspective view.
is a side view.

In the figure, reference numeral 10 denotes a pad section, which is composed of four pads 101 to 104. Each pad 101 to 104 is composed of a pressure sensitive element and rubber stretched thereon. The signal from the pressure-sensitive element is supplied to a control section, which will be described later.

In such a configuration, each pad 101 to
When the rubber part 104 is hit with a stick, current flows through the pressure sensitive element and is transmitted to the control section. This allows it to be detected which pads 101 to 104 have been hit. Note that the number of pads is not limited to four, and it goes without saying that any number of pads may be used as needed.

Further, 11 is a switch section, which is composed of a plurality of switches. Each switch 111 to 11n constituting this switch section 11 is also connected to the pad 101.
It has the same configuration as 104 to 104. In other words, it is composed of a pressure sensitive element and rubber stretched over it. The signal from the pressure-sensitive element is supplied to a control section, which will be described later. Each of these switches 111 to 11
Types of modes, timbres, rhythms, etc. are assigned to n.

In such a configuration, each switch 111
When the rubber portion of ~11n is hit with a stick, a current flows through the pressure sensitive element and is transmitted to the control unit. This allows it to be detected which switch 111 to 11n has been hit. In addition, switch 1
The numbers 11 to 11n may be any number depending on the functions installed on the digital drum.

FIG. 3 is a schematic block diagram showing the overall configuration of an embodiment of the digital drum according to the present invention.

In the figure, reference numeral 10 denotes the above-mentioned pad section, and pressure sensitive elements 16 corresponding to each pad 101 to 104 are shown.
1 to 164 are provided. These pressure sensitive elements 1
The outputs of 61 to 164 are supplied to the switching circuit 20.

Reference numeral 11 denotes the above-mentioned switch section, and pressure sensitive elements 171 to 171 corresponding to each of the switches 111 to 11n
17n is provided. These pressure sensitive elements 171
~17n outputs are also supplied to the switching circuit 20.

[0023] Sounding means 12 (14) and changing means 13 (
15) The control unit includes a switching circuit 20, an A/D converter 21, a sound source system 22, a memory 23, and a D/A converter 2.
4, an amplifier 25 and a speaker 26.

The switching circuit 20 includes pressure sensitive elements 161 to 16
4 and 171 to 17n according to the control signal SG1 from the CPU of the sound source system 22,
The output is time-divided. The pressure sensitive elements 161 to 164 and 171 are time-divided by this switching circuit 20.
The outputs of ~17n are supplied to the A/D converter 21.

The A/D converter 21 converts the input analog signal from the switching circuit 20 into a digital signal and outputs the digital signal. The output of this A/D converter 21 is supplied to a sound source system 22.

The sound source system 22 has a CPU (Central Processing Unit), and not only generates digital musical tone signals to be generated, but also controls the entire digital drum device. For example, the CPU selects the pressure sensitive elements 161 to 164 and 1 which are selected by the switching circuit 20 according to the control signal SG1, digitized by the A/D converter 21, and inputted in a time-sharing manner.
It receives signals from 71 to 17n and performs software processing such as comparing the signals with the above-mentioned time division to determine whether or not a pad has been hit. Then, depending on the result of this determination, a sound generation process, a mute process, a timbre change process, a volume change process, a rhythm type change process, etc. are performed. The digital musical tone signal output from this sound source system 22 is supplied to a D/A converter 24.

Furthermore, in the sound generation process, it is selected whether to perform the sound generation process of a single note or a continuous sound (rhythm phrase) depending on the setting status of the tone number at that time. Then, pronunciation processing is performed. In addition,
A performance form in which a continuous rhythm phrase is output by hitting a pad once is hereinafter referred to as a "one-shot beat performance."

[0028] In the following, the tone number (tone number
．． ) is "50" or more, it is a one-shot beat performance designation, and if it is less than "50", it is assumed that a normal single note is designated.

[0029] To assign a one-shot beat tone to each pad 101 to 10n, for example, select and hit one of the plurality of assign switches defined for switches 111 to 11n, and then press the pad to which you want to assign. By hitting the pad, it can be configured to assign a tone corresponding to the assign switch to the pad. Alternatively, it may be configured to use a tone color number switch comprised of a numeric keypad or the like.

The memory 23 is composed of a ROM (read-only memory) and a RAM (writable/readable memory). The ROM of the memory 23 stores programs for operating the CPU included in the tone generator system 22, musical waveform data corresponding to tones, and various other fixed data. In addition, the RAM of the memory 23 temporarily stores musical tone data, stores status information of the device, or is used to store the CPU
It is used as a work area.

The D/A converter 24 converts the input digital musical tone signal into an analog musical tone signal. The analog musical tone signal converted by this D/A converter 24 is
The signal is supplied to an amplifier 25.

The amplifier 25 amplifies the input analog musical tone signal with a predetermined gain. This amplifier 25
The output is supplied to a speaker 26.

The speaker 26 converts an input analog musical tone signal as an electric signal into an acoustic signal. This speaker 26 is designed to produce electronic drum sounds.

Next, the operation of the above configuration will be explained with reference to the flowchart shown in FIG. 4, focusing mainly on the sound generation process.

When the power is turned on, the CPU of the sound source system 22 first executes initial processing (not shown). This initial processing is a process for initializing data such as timbre, volume, rhythm, etc. As a result, pad 1
When 01 to 104 are struck, a predetermined tone is emitted at a predetermined volume, and when a rhythm start is instructed, a predetermined rhythm is generated. Become.

[0036] When the above initial processing is completed, first,
Operator scanning processing is performed (step S10). That is, the control signal SG1 is transferred from the sound source system 22 to the switching circuit 20.
Each pressure sensitive element 161 to 164
and 171 to 17n are sequentially switched and selected and input into the sound source system 22 via the A/D converter 21. This captured data is temporarily stored in RAM within the memory 23.

Next, it is checked whether the data acquired in the operator scanning process is an on-event for the pads 101 to 104 (step S11). This is done by comparing the data taken in by the previous manipulator scanning process and the data taken in by the current manipulator scanning process.

Then, when it is determined that it is an on-event, the tone No. It is checked whether or not is greater than or equal to "50" (step S12). In other words, it is checked whether a one-shot beat is assigned to the pad that was hit.

When it is determined that the number is "50" or more, one-shot beat performance processing is performed (step S13). That is, the sound source system 22 reads the one-shot beat musical waveform data stored in the ROM of the memory 23, performs predetermined processing such as adding an envelope, and outputs it as digital musical sound data. This digital musical sound data is converted into analog musical sound data by a D/A converter 24, a predetermined amplification is performed by an amplifier 25, a predetermined drum phrase sound is emitted from a speaker 26, and a one-shot beat performance is performed. It turns out. When this one-shot beat performance process is completed, the process returns to step S10 and the same process is repeated again.

Note that the musical waveform data for the one-shot beat can be played simultaneously with the preset rhythm built into the sound source system 22.
Furthermore, since the musical sound waveform data is read out in synchronization with the system tempo, it is possible to play a drum phrase that matches the system tempo by hitting the pad once.

On the other hand, if it is determined in step S12 that the number is not "50" or more, normal single-tone sound production processing is performed (step S14). In other words, sound source system 2
2 reads the musical sound waveform data for single notes stored in the ROM of the memory 23, performs predetermined processing such as adding an envelope, and outputs it as digital musical sound data. This digital musical tone data is, as above, D/A
It is converted into analog musical tone data by the converter 24, and then sent to the amplifier 2.
5, a predetermined amplification is performed, a single drum sound is emitted from the speaker 26, and a normal drum performance is performed. When this sound generation process is completed, the process returns to step S10 and the same process is repeated again.

Further, if it is determined in step S11 that the event is not an on event, it is checked whether or not it is an off event (step S15). This is also done by comparing the data taken in by the previous manipulator scanning process and the data taken in by the current manipulator scanning process. Then, when it is determined that it is an off event, the tone No. It is checked whether or not is greater than "50" (step S16). If it is determined that the number is "50" or more, the process returns to step S10 without performing any processing. That is, in the one-shot beat performance process, the sound is automatically muted when the sounding of the read musical waveform data for the one-shot beat ends.

On the other hand, if it is determined in step S16 that the number is not 50 or more, muting processing is performed (step S17). In other words, the sound source system 22 stops outputting the musical tone data currently being output due to the sound generation process performed in step S14. As a result, the speaker 26
This means that the single-note drum sound being output from the unit will be muted. When this muting process is completed, the process returns to step S10 and the same process is repeated again. This allows the drum performance to be performed in accordance with the player's stick handling.

If it is determined in step S15 that it is not an off event, the process returns to step S10 to repeat the same process as above.

In the above operation explanation, only the sound production or muting process (including one-shot beat performance) was explained, but each switch 111 to 11 of the switch section 11
Substantially similar processing is performed for event n.

That is, it is checked whether or not it is an on event of the switches 111 to 11n, and if it is an on event, processing corresponding to the definition of the switch, such as tone color change processing,
Volume change processing, rhythm change processing, etc. are performed. Therefore, the performer uses the switches 111 to 11n.
For example, by hitting with a stick, you can change the state of the digital drum as if you were operating a switch on a conventional operation panel.

As described above, according to this embodiment, a single-note drum sound is generated by hitting the pads 101 to 104 of the pad section 10 with, for example, a stick held in the hand, and the switch 111 of the switch section 11 is ~11n
Since it is possible to change the tone, volume, or type of rhythm generated by hitting the stick, it is possible to perform continuously without having to change the stick in one's hand, for example.

[0048] Also, the switch 111 of the switch section 11
~ Hit 11n to specify one-shot beat performance,
After that, continuous drum sounds (drum phrases) are generated by hitting the pads 101 to 104 of the pad section 10, so that even beginners can play difficult drum phrases.

[0049]

[Effects] As detailed above, according to the present invention, the switch operation can be performed without changing the stick, so continuous performance can be easily performed, and even beginners can play difficult drum phrases using digital drums. can be provided.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining the principle of a digital drum according to the present invention.

FIG. 2 is an external view showing the configuration of an embodiment of the present invention.

FIG. 3 is a block diagram showing the overall configuration of an electric circuit according to an embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the block diagram shown in FIG. 3;

FIG. 5 is a diagram for explaining an example of a conventional digital drum.

[Explanation of symbols]

10 Pad sections 101 to 104 Pads 161 to 164 Pressure sensitive element 11 Switch section 111 to 11n Switch 171 to 17n Pressure sensitive element 12, 14 Sound generation means (sound source system, memory, D/
A converter, amplifier, speaker) 13, 15 Changing means (switching circuit, A/D converter, sound source system, memory) 20 Switching circuit 21 A/D converter 22 Sound source system 23 Memory 24 D/A converter 25 Amplifier 26 Speaker

Claims (2)

[Claims] 1. A pad section (10) having a pressure-sensitive element that turns on or off in accordance with applied pressure, and a sounding means (12) that generates a single-note percussion sound when the pad section (10) is pressed. ), a switch part (11) having a pressure-sensitive element that turns on or off depending on the applied pressure, and a single-note hitting sound generated by the sounding means (12) when the switch part (11) is pressed. A digital drum characterized by comprising: changing means (13) for changing. 2. A pad section (10) having a pressure-sensitive element that turns on or off in accordance with applied pressure, and a sounding means (14) that generates a continuous impact sound when the pad section (10) is pressed. ), a switch section (11) having a pressure sensitive element that turns on or off depending on the applied pressure, and when the switch section (11) is pressed, the sound generating means (14)
Changing means (15) for changing the continuous impact sound generated by
A digital drum characterized by being equipped with.