JPH0651755A - Automatic playing device for precussion instrument - Google Patents

Abstract

PURPOSE:To enable a complicated musical performance with simple constitution without limitation by environment, time, etc., by providing a sounding body, a percussion element, and a percussion control part in suspension structure. CONSTITUTION:A MIDI sequencer 5 outputs musical sound data, stored in a musical sound data ROM, to MIDI by using an operation key and also programs the output state, etc., of the musical sound data. Further, the musical sound data are outputted to the MIDI at certain time based upon a timer. A percussion control part 6 controls the solenoid of the percussion part 10 according to a MIDI signal. The solenoid 9 of the percussion part 10 is driven with a supplied current at the timing of the latch output from the percussion control part 6 and a hammer head 41 strikes the sounding body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic percussion instrument playing apparatus for striking a plurality of sounding bodies to perform an automatic performance.

[0002]

2. Description of the Related Art Conventionally, as a percussion instrument, a keyboard percussion instrument such as a xylophone, a xylophone, a marimba, a xylophone, a glocken, and a vibrahorn has been known. In this type of percussion instrument, the sounding body is struck with a mallet held by a human hand, and the sound generated by the striking is resonated by a hollow resonator provided for each sounding body to play at a loud volume. I am doing it.

However, in such a conventional percussion instrument, since the performance is performed by human power, it is not so easy to perform a long-time performance or a very complicated performance, and the time and place of the performance are limited. There was a problem of being. The present invention has been made to solve the above problems, and an object of the present invention is to provide an automatic percussion instrument playing device which has a simple structure and is capable of performing a complicated performance without being limited by the environment, time, etc. in which the performance is performed. To do.

[0004]

In order to achieve the above-mentioned object, the invention of claim 1 is an apparatus for performing automatic performance based on performance information, as shown in FIG. A sounding body M1, a striking element M2 for striking the sounding body M1 to generate sound, and a striking control unit M3 for performing a performance by controlling the striking state of the sounding body M1 by the striking element M2 based on the playing state. The gist is an automatic performance device for a percussion instrument, which is characterized in that

A second aspect of the present invention is based on the automatic musical instrument playing device for a percussion instrument according to the first aspect, characterized in that each of the plurality of sounding bodies has a resonator on a back surface thereof. The invention according to claim 3 is characterized in that the striking element is arranged on the back surface of a plurality of sounding bodies, and the front surface of the sounding body is a manual striking surface. The main point is the automatic performance device.

According to a fourth aspect of the present invention, the striking element disposed on the back surface of the plurality of sounding bodies strikes the sounding body above or below the resonance sound outlet of the resonator. The automatic playing device for percussion instrument according to claim 3 is summarized.

Here, as the resonator, a large hollow body can be used in sequence due to the difference in the pitch of the sounding body, but especially when a pipe curved in an approximately L shape is used, the device becomes compact. desirable. As the arrangement of the sounding bodies, for example, those arranged in a row in the vertical direction or in the horizontal direction can be cited.
They may be arranged in a polygonal shape or in a radial shape, and the arrangement is not particularly limited.

Further, as the striking element, a solenoid driven by electric power supplied from a power source can be adopted.

[0009]

In the automatic percussion instrument playing apparatus of the present invention having the above structure, the striking element M2 is provided by the striking controller M3.
Is controlled to drive a plurality of sounding bodies M1 simultaneously or sequentially to perform a performance. That is, for example, based on the performance information input from the outside or stored in advance, the batting control unit M3
Adjusts the driving timing and driving force of the striking element M2 to strike and vibrate the plurality of sounding bodies M1.
You can perform.

Here, when the back surface of each of the plurality of sounding bodies has a resonator, a large sound is obtained. Also,
The striking element is arranged on the back surface of the plurality of sounding bodies, while the front surface of the sounding body is a manual striking surface,
In addition to automatic performance, manual performance can also be performed.

Further, when the striking element arranged on the back surface of the plurality of sounding bodies strikes the sounding body above or below the resonance sound outlet of the resonator, the arrangement of the striking elements becomes compact. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a perspective view of the automatic percussion instrument playing device 1 of the present embodiment, and FIG. 3 is a block diagram showing its main electrical configuration.

As shown in FIG. 2, in the automatic percussion instrument playing apparatus 1 of the present embodiment, a sounding section 4 including a sounding body 2 and a resonator 3 having different lengths according to the pitch is arranged vertically in a line. For example, it is installed and used in a public place such as a hotel lobby or a station concourse.

As shown in FIG. 3, the automatic performance device 1 for a percussion instrument has a control section 7 including a MIDI sequencer 5 with a timer and a batting control section 6, and a solenoid 9.
(See FIG. 6) and a power supply unit 8 for supplying electric power, a striking unit 10 for striking the sounding body 2 with a solenoid 9, a plurality of sounding bodies 2 provided according to the pitch, and each sounding body 2 Is provided with a sounding unit 4 including a resonator 3 arranged corresponding to.

Next, each structure will be described in detail. As shown in FIG. 4, the MIDI sequencer 5 includes a well-known CPU 20, a control ROM 21 and a RAM 22, and a tone data ROM 23 storing performance information (tone data). In addition to the operation keys 25 formed on the panel and the internal timer 26,
Display 27 and MIDI signal input / output unit (SIO)
Equipped with 28. Then, by using the operation keys 25, the musical sound data is MIDI-outputted, and the output state of the musical sound data is programmed. Further timer 2
Based on No. 6, MID music data at a certain time
I output.

A table of contents portion and a data portion are set in the tone data ROM 23. The table of contents stores the data necessary to refer to the song, such as the start address of the song, the data length of the song, the time of the song, the title of the song, and the data section stores the actual song data. Has been done.
This music data is stored in an absolute time / event system, and is composed of 4-byte event data and a 4-byte separator that divides each event data and controls the progress of the music.

The event data is, as shown in Table 1 below,
It is composed of a status byte indicating the distinction between data such as note-on and note-off, data 1 and data 2 indicating control data such as velocity, and information (time stamp) at the time when an event should occur.

[0018]

[Table 1]

On the other hand, as shown in Table 2 below, the separator is composed of a start separator indicating the start of event data, a time separator indicating the break of each byte, and an end separator indicating the end of the event data. ing.

[0020]

[Table 2]

The hit control section 6 is a well-known CP.
U, ROM, RAM, timer, MIDI input / output unit (SIO) (not shown), and RAM has an assign counter for adjusting the sounding timing of several hits (for example, four) at the same time. Is equipped with. This striking control section 6 is provided for striking section 1 to protect the circuit.
Control the power supply unit 8 that supplies HV power to 0,
The solenoid 9 of the striking unit 10 is controlled based on the MIDI signal received from the MIDI sequencer 5.

Here, the hardware structure of the batting control section 6 and the solenoid 9 is shown in FIG. 5, but the transistors 5b and 5c are switched by the latch output sent from the control chip 5a of the batting control section 6. Functioning as a switch, this switch action causes the solenoid 9 to
The circuit connecting the V power supply is turned on and off. That is, the drive of the solenoid 9 is controlled based on the MIDI signal by this switch operation.

As shown in FIG. 6, the sounding section 4 has a flat sounding body 2 attached to one side (front side) of an L-shaped substrate 30 via a support fitting 31 and a support cord 32. On the back side, a hollow resonator 3 bent in a substantially L shape is provided. A striking portion 10 is attached to the upper surface of the bottom portion 30b of the substrate 30 perpendicularly to the sounding body 2 so that the end portion of the sounding body 2 can be hit from the back surface.

The sounding body 2 is similar to the sound plate of a large-sized iron harp, and is suspended by the support cords 32 that pass through the through holes 2a provided at the upper and lower portions of the sounding body 2. It is held so that it can vibrate. Since this sounding body 2 is made of duralumin and subjected to alumite treatment, it has a soft sound that resonates well even in crowded areas. In addition, there is little pitch deviation due to dryness and humidity, and it looks great as a monument.

The resonator 3 is a pipe slightly thicker than the diameter of the sounding body 2, and is cut into a length so as to resonate at the frequency of each sounding body 2. Then, one end of the pipe is smoothly bent at 90 °, and is arranged so as to penetrate the through hole 30a of the substrate 30 and the open end 3a of the pipe to be close to the back surface of the sounding body 2.

As shown in FIG. 7, the striking portion 10 includes a hollow cylinder type solenoid 9 for reducing noise during operation, and a solenoid 9
A movable iron core 40 that moves in the direction of arrow A by the excitation of
A hammer head 41 made of rubber having a high hardness attached to the tip side of the movable iron core 40, a spring 42 for weakly urging the movable iron core 40 in the direction of arrow B, and a movement of the movable iron core 40 in the returning direction are restricted. L-shaped stopper 43 and movable iron core 40
And a felt 44 that absorbs a shock at the time of returning.

Then, the solenoid 9 of the striking portion 10
Is driven by the electric current that flows at the timing of the latch output from the striking control unit 6, operates so that the hammer head 41 strikes the sounding body 2, and when the electric current is cut off, the movable iron core 40 is moved by the spring 42. It works to return to the original state.

Next, the operation of the percussion instrument automatic performance apparatus 1 of the present embodiment having the above configuration will be described with reference to the flowcharts of FIGS. 8 shows the MIDI signal reproduction processing performed by the MIDI sequencer 5, and FIG. 9 shows the control signal processing performed by the batting control section 6 to the batting section 10.

First, as shown in FIG. 8, at step (hereinafter step is referred to as S) 100, 4-byte data which is one musical tone data is read, and at next S110, the read data is the beginning of the data. Is determined to be a start separator. Here, if an affirmative decision is made, the routine proceeds to S120, where the counter Ct is set to 0 and S100
On the other hand, if the negative determination is made, the process proceeds to S130. Here, Ct is a counter that is incremented by a 5 ms timer interrupt.

At S130, it is determined whether the read data is an end separator indicating the end of the data,
If an affirmative determination is made here, the present process is terminated, while if a negative determination is made, the operation proceeds to S140. In S140, it is determined whether or not the read data is a time separator indicating a division of the data, and if an affirmative determination is made here, the process proceeds to S150, waits until the count number of the counter Ct becomes 200 or more, and the subsequent S160. At, the counter Ct is set to 0 and the process returns to S100. On the other hand, if a negative determination is made in S140, the process proceeds to S170.

In S170, it is determined whether or not the read data is event data for instructing sounding such as note-on. If a negative determination is made here, the process returns to S100, and if an affirmative determination is made, the process proceeds to S180. . In S180, the time adjustment for outputting the event data is performed by the counter Ct.
Information on the time when the event should occur (time stamp)
It waits until it exceeds Ts, and in the subsequent S190, actually outputs an event of the MIDI signal to the drive control unit 6.

In other words, by the above-described processing of S100 to S190, a signal for every 4 bytes for producing a musical tone one by one is sequentially output to the drive control section 6. Next, as shown in FIG. 9, in the drive control unit 6 to which the MIDI signal is input, first in S200, the initialization process and the process of clearing the latch used for the output of the control signal are performed, and then in S210. , M
Wait until the IDI signal is input.

At S220, a process for supplying the HV power of the power supply unit 8 to the striking unit 10 is performed in response to the input of the MIDI signal. In subsequent S230, the input M
Determine the type of IDI signal. Here, if the MIDI signal is, for example, control data for setting valid / invalid of the channel, the corresponding data processing is performed in S240, and the process proceeds to S260.

On the other hand, if the input MIDI signal is event data, such as note-on data, S250
So-called assignment processing is performed in S260
Proceed to. In other words, make sure that the note-on key number is not already set in the assign counter,
Perform processing to set a fixed value in the assign counter. The assign counters are four counters assigned for sounding.

Then, in S260, when the timer recognizes that the value of the assign counter has passed the predetermined time, the assign counter is decremented. The reason why the value of the assign counter is checked by the timer is that the hit is not made again for a while after the hit is made by the latch output last time.

In subsequent S270, the latch port is set according to the value of the assign counter, the corresponding latch output is turned on, and a signal for driving the solenoid 9 of the striking portion 10 is output. At S280, similarly to S210, it is determined whether or not a MIDI signal is input. If an affirmative determination is made here, the process returns to S230, and if a negative determination is made, the process proceeds to S290.

In S290, it is determined whether or not the MIDI signal has not been input for a certain time or more. If a negative determination is made here, the process returns to S260, whereas if an affirmative determination is made, the process proceeds to S300, the HV power supply is turned off, and the process returns to S210. In other words, due to this on / off control processing of the HV power supply, when the MIDI signal is not input for a certain time or longer, only the batting control section 6 is active, so that the safety of the circuit for continuous operation at day and night is improved. It will be.

That is, by the above-described processing of S200 to S300, a signal for driving the solenoid 9 is output from the drive control section 6 to the power source section 8 and the striking section 10 to strike the sounding body 2 to generate a musical sound. Can be
At the same time, it is possible to control ON / OFF of the HV power supply.

As described above, in the automatic percussion instrument playing apparatus 1 of the present embodiment, the sounding unit 4 is controlled by the control unit 7 and the solenoid 9 is driven according to the performance information to strike the sounding body 2. Since the performance is performed, it is possible to automatically perform a complicated performance of a percussion instrument. Further, since the resonator 3 can provide a sufficient volume even in a wide area, it is possible to perform a high quality performance even when the resonator 3 is installed in a hall or a concourse of a station. Furthermore, since the sounding body 2 is arranged on the front surface of the device, it is possible to easily perform a concert with a person.

Although the embodiments have been described above, the present invention is not limited to the above embodiments and can be implemented in various modes. For example, since the sounding unit including the striking unit, the sounding body, and the resonator can be arranged separately for each pitch, there is an advantage that not only can they be arranged in a line as in the present embodiment, but they can be arranged freely. .

[0041]

As described above, according to the present invention, the sounding body having a plurality of hanging structures, the striking element for striking the sounding body to generate sound, and the striking control section for controlling the striking state of the striking element are provided. Since it is provided, it is possible to preferably perform an automatic performance of a percussion instrument. In particular, it is possible to easily perform a long-time performance or a very complicated performance, and the performance time and place are not limited.

Also, when a plurality of sounding bodies each have a resonator on the back surface, the volume is high, so that the performance is sufficiently widened when used in a wide place, which is very suitable. Furthermore,
The striking element is arranged on the back surface of the plurality of sounding bodies, and when the front surface of the sounding body is a manual striking surface, it is preferable because a person's performance and an automatic performance can be easily performed.

Moreover, when the striking elements arranged on the back surface of the plurality of sounding bodies strike the sounding bodies above or below the resonance sound outlet of the resonator, the striking elements can be arranged compactly. It is suitable.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a basic configuration of the present invention.

FIG. 2 is a perspective view showing an automatic performance device for a percussion instrument according to the present embodiment.

FIG. 3 is a block diagram showing a main electrical configuration of an automatic performance device for a percussion instrument.

FIG. 4 is a block diagram showing a configuration of a MIDI sequencer.

FIG. 5 is a circuit diagram showing a circuit that drives a power supply and a solenoid.

FIG. 6 is an explanatory diagram showing a front surface, a side surface, and a plane of the sounding section.

FIG. 7 is a side view showing a striking part.

FIG. 8 is a flowchart showing a signal reproduction process.

FIG. 9 is a flowchart showing processing of a signal for driving a solenoid.

[Explanation of symbols]

1 ... Percussion instrument automatic performance device 2 ... Sound generator 3 ... Resonator 4 ... Sound generator 5 ... MIDI sequencer 6 ... Strike control unit 8 ... Power supply unit 9 ... Solenoid 10 ... Strike unit

Claims (4)

[Claims] 1. A device for automatically performing performance based on performance information, comprising a plurality of sounding bodies having a hanging structure, a striking element for striking the sounding bodies to generate sound, and the striking element based on the performance information. A percussion instrument automatic performance apparatus comprising: a percussion control unit for controlling a percussion state of the sounding body by the percussion instrument to perform a performance. 2. The percussion instrument automatic performance apparatus according to claim 1, wherein each of the plurality of sounding bodies has a resonance body on a back surface thereof. 3. The automatic performance of a percussion instrument according to claim 1, wherein the striking element is arranged on a back surface of the plurality of sounding bodies, and a front surface of the sounding body is a manual striking surface. apparatus. 4. The striking element arranged on the back surface of the plurality of sounding bodies strikes the sounding body above or below a resonance sound outlet of the resonator. Automatic percussion instrument playing device.