JP2004037746A - Electronic drum unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic drum unit which does not require assembly, is lightweight and small, is free of the limitation on the size of a pad, and is inexpensive. <P>SOLUTION: The electronic drum unit outputs the playing sound meeting the hit pad by hitting the pad by means of a drum stick 10, in which the drum stick 10 has a trigger output section 100 for outputting a trigger signal when the pad is hit, a pad detecting section 102 for detecting the hit pad, a playing information forming section 104 for forming and outputting the playing information based on the detection output of the detecting section 102 when the trigger signal is inputted thereto, and a radio communication section 106 for sending the playing information outputted from the forming section 104 to the sound source unit 20. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic drum device, and more particularly, to a portable electronic drum device.
[0002]
[Prior art]
As conventional electronic drum devices, there are electronic drum devices of a type imitating an acoustic drum, a type in which a pad of one device is divided into a plurality of surfaces, and a type in which a trigger detection unit is attached to an acoustic drum and used. Yes.
[0003]
[Problems to be solved by the invention]
The electronic drum device of the type imitating an acoustic drum is a full-fledged one, but has a problem that it needs to be assembled, and cannot be easily carried because it is heavy and large.
Also, an electronic drum device of a type in which the pad of one device is divided into a plurality of surfaces and used is more compact than that of a type imitating an acoustic drum, but has a problem that it is difficult to use because the pad surface is small. Was.
Further, there is a problem that an electronic drum device of a type in which a trigger output unit is mounted on an acoustic drum for use cannot be used without the acoustic drum.
[0004]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide an inexpensive electronic drum device that does not require assembly, is lightweight and small, has no limitation on the size of a pad, and is inexpensive.
[0005]
[Means for Solving the Problems]
To achieve the above object, the invention according to claim 1 is an electronic drum device that outputs a performance sound corresponding to the struck pad from a sound source unit by striking the pad with a drumstick, The drumstick includes a trigger output unit that outputs a trigger signal when the pad is struck, a pad detection unit that detects the struck pad, and a pad based on a detection output of the pad detection unit when the trigger signal is input. A performance information generating means for generating and outputting the performance information by means of the performance information generating means, and a communication means for transmitting the performance information output from the performance information generating means to the sound source unit.
[0006]
According to a second aspect of the present invention, in the electronic drum device according to the first aspect, the sound source unit includes a communication unit that receives performance information from the drumstick, and a performance unit that receives the performance information received by the communication unit. And a sound source for outputting an audio signal.
[0007]
According to a third aspect of the present invention, in the electronic drum device according to the first or second aspect, the pad is a color pad provided with a plurality of different colors, and And detecting the color of the hit pad, wherein the performance information generating means generates and outputs performance information corresponding to the color of the pad detected by the pad detecting means.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the configuration of an electronic drum device according to an embodiment of the present invention. The electronic drum device according to the embodiment of the present invention includes a drum stick 10, a sound source unit 20, and a pad (not shown), and a speaker 22 is connected to an output end of the sound source unit 20.
[0009]
The drum stick 10 has a color sensor 102 which detects a pad color as a pad detector inside a tip portion thereof, a vibration sensor 100 which is provided inside the vicinity of the tip portion as trigger output means, and a And a performance information generation unit 104 as performance information generation means for generating and outputting performance information based on outputs of the color sensor 102 and the vibration sensor 100, and a wireless communication unit 106 as communication means. . The color sensor 102 has a light receiving surface 102A on the front surface.
[0010]
Next, FIG. 2 shows an electrical configuration of the electronic drum device according to the embodiment of the present invention. In the figure, an electronic drum device includes a drum stick 10 including a trigger output unit 100, a pad detection unit 102, a performance information generation unit 104, and a wireless communication unit 106, and a sound source unit including a wireless communication unit 200, a sound source 202, and an amplifier 204. 20.
[0011]
The trigger output unit 100 includes, for example, a vibration sensor as shown in FIG. 1. The vibration sensor 100 generates a signal as shown in FIG. 4 by hitting a pad or the like with the tip of the drum stick 10. As a trigger signal is generated when the level of this signal exceeds the threshold value (TH), a detection signal indicating that vibration has occurred, that is, that the drumstick 10 has hit an object such as a pad, is output. The performance information generation unit 104, which will be described later, is activated only when a trigger signal output from the trigger output unit 100 is received.
[0012]
As shown in FIG. 3, the drum stick 10 shown in FIG. 1 includes a front portion 10A including a hitting portion and a rear portion 10B connected to the front portion 10A, and a connection between the front portion 10A and the rear portion 10B. A piezoelectric sensor 110 is provided in the section, and when an object such as a pad is hit with the front portion 10A, a stress acts in the direction of arrow X, and the stress is detected by the piezoelectric sensor 110, thereby hitting an object such as a pad with a drum stick. It may be configured to detect the occurrence of the trigger and generate a trigger signal based on the detection signal. The other configuration is the same as that of the drum stick shown in FIG.
[0013]
As shown in FIG. 1, the pad detection unit 102 is configured by, for example, a color sensor that detects each color of a color pad provided with a plurality of different colors. This color sensor utilizes the fact that the reflectance of each of the three primary colors R, G, and B of light differs depending on the chromaticity of the detected object. The G and B lights are projected on the same optical axis, the reflected light from the detection object is guided to a light receiving unit, and the ratio of R, G, and B of the received light is subjected to arithmetic processing to determine the color. It has become.
The size, shape, and material of the color pad are not limited. For example, as shown in FIG. 8, if a vinyl sheet printed with colors such as red, blue, green, and black is formed, it can be rolled up or folded, which is convenient for carrying.
[0014]
The performance information generation unit 104 captures the output of the pad detection unit (color sensor) 102 and indicates the relationship between the color of the color pad shown in FIG. 5 and the note number (pitch) stored in the built-in memory. With reference to the color-note number table, a pitch corresponding to the color of the pad hit by the drumstick, that is, the color detected by the pad detection unit 102 is determined. Then, as shown in FIG. 5, the tone numbers to be pronounced are assigned to the note numbers. That is, when the color is determined, two pieces of performance information, that is, pitch and timbre, are determined.
[0015]
By the way, in the color-note number table, "red" indicates the note number "38" and the snare drum performance information, "blue" indicates the note number "41" and the floor tom performance information, and "green" indicates the note number. "35" is associated with the performance information of the bass drum, and "black" is associated with the note number "49" so that the performance information of the cymbal is output. It is assumed that the relationship between the color and the note number is associated on the drum stick 10 side, but the relationship between the note number and the tone color is determined on the sound source unit 20 side. Then, the relationship can be freely set by the operation of the sound source unit 20 by the user.
[0016]
Next, the operation of the electronic drum device according to the embodiment of the present invention will be described with reference to the flowcharts of FIGS. FIG. 6 shows the operation of the drum stick 10, and FIG. 7 shows the operation of the sound source unit. In FIG. 6, by hitting a pad as shown in FIG. 8 with the tip of the drum stick 10, vibration is detected by the trigger detection unit 100, and it is determined whether or not a trigger signal has been output (step 300).
When vibration is detected by the trigger detection unit 100 in step 300 and a trigger signal is output, the color of the pad hit with the drumstick 10 is detected by the pad detection unit (color sensor) 102 (step 301).
[0017]
The performance information generation unit 104 that has received the trigger signal from the trigger detection unit 100 determines the note number corresponding to the pad color by referring to the color-note number table based on the pad color detected by the pad detection unit 102. Then, note-on event information including the determined note number is created and output to the wireless communication unit 106 (step 302).
The wireless communication unit 106 transmits note-on event information including the corresponding note number (step 303).
Next, the flow returns to step 300 and waits for detection of vibration.
[0018]
On the other hand, as shown in FIG. 7, the sound source unit 20 determines whether or not the note-on event information including the note number transmitted from the wireless communication unit 106 of the drumstick 10 is received by the wireless communication unit 200 ( Step 400). Upon receipt, the tone is derived from the table of FIG. 5 and output to the sound source 202 together with the note-on event information (step 401).
Next, the sound source 202 generates an audio signal based on the two pieces of performance information of the input note number and tone color, and outputs the audio signal to the output terminal 20A via the amplifier 202 (step 402). As a result, sound is emitted from the speaker 22 connected to the output terminal 20A. Next, the flow returns to step 400 and waits for reception of information.
[0019]
According to the electronic drum device according to the present embodiment, an inexpensive electronic drum device that does not require assembly, is lightweight and small, has no limitation on the size of the pad, and can be obtained.
[0020]
【The invention's effect】
According to the present invention, there is provided an electronic drum device which outputs a performance sound corresponding to the hit pad from a sound source unit by hitting the pad with a drum stick, wherein the drum stick is used when hitting the pad. Trigger output means for outputting a trigger signal; pad detection means for detecting a hit pad; and performance information for generating and outputting performance information based on the detection output of the pad detection means when the trigger signal is input. Since it has a generating means and a communication means for transmitting the performance information output from the performance information generating means to the sound source unit, assembly is unnecessary, light and small, the size of the pad is not limited, and inexpensive. An electronic drum device is obtained.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an electronic drum device according to an embodiment of the present invention.
FIG. 2 is a block diagram showing an electrical configuration of the electronic drum device shown in FIG.
FIG. 3 is an explanatory view showing a modified example of the drum stick in the electronic drum device shown in FIG. 1;
FIG. 4 is a diagram showing an output signal waveform of a trigger detection unit (vibration sensor) in FIGS. 1 and 2;
FIG. 5 is an explanatory diagram showing the contents of a color-MIDI channel table stored in a memory built in the performance information generating unit in FIGS. 1 and 2;
FIG. 6 is a flowchart showing the operation of a drum stick in the electronic drum device shown in FIG. 2;
FIG. 7 is a flowchart showing the operation of a sound source unit in the electronic drum device shown in FIG. 2;
FIG. 8 is an explanatory diagram illustrating an example of a color pad.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... drum stick, 20 ... sound source unit, 100 ... trigger output part, 102 ... pad detection part, 104 ... performance information generation part, 106, 200 ... wireless communication part, 202 ... sound source, 204 ... amplifier

Claims (3)

An electronic drum device that, by hitting a pad with a drum stick, outputs a performance sound corresponding to the hit pad from a sound source unit,
The drumstick is
Trigger output means for outputting a trigger signal when the pad is hit,
Pad detection means for detecting a hit pad;
Performance information generating means for generating and outputting performance information based on the detection output of the pad detection means when the trigger signal is input,
Communication means for transmitting the performance information output from the performance information generating means to the sound source unit;
An electronic drum device comprising: The sound source unit,
Communication means for receiving performance information from the drumstick;
A sound source that outputs an audio signal based on the performance information received by the communication means;
The electronic drum device according to claim 1, comprising: The pad is a color pad subjected to a plurality of different colors,
The pad detecting means detects a color of a hit pad,
The electronic drum device according to claim 1, wherein the performance information generation unit generates and outputs performance information corresponding to a color of the pad detected by the pad detection unit.

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