JPH02304599A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To easily play (or automatically play) music on the way of which automatic accompaniment is started by providing a means which controls the sound volume/sound production of automatic accompaniment in accordance with the timing of the start of a detected measure. CONSTITUTION:At the time of automatically playing music on the way of which automatic accompaniment is started, a player turns on a start switch 16 at an arbitrary timing during playing to send data of automatic accompaniment to a sound producing circuit 19, and simultaneously, the sound producing circuit 19 is controlled by a sound production control circuit 22 to mute automatic accompaniment to be played. When a measure start detecting circuit 21 first detects the start of the measure of automatic accompaniment by a clock signal thereafter, the sound production control circuit 22 releases the data control to the sound producing circuit 19. Therefore, sound production of automatic accompaniment can be started without being deviated from automatic playing. Thus, automatic accompaniment is smoothly started on the way of music by the easy operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic musical instrument incorporating an automatic performance device or an automatic accompaniment device.

BACKGROUND OF THE INVENTION Modern electronic musical instruments have many independent performance parts and independent sequences, allowing a wide variety of performances to be performed by several players.

A conventional electronic musical instrument will be explained below.

FIG. 3 is a block diagram of a conventional electronic musical instrument incorporating an automatic performance device and an automatic accompaniment device. In Figure 3, ■
is a performance keyboard for creating automatic performance data. 2 is a storage device for storing automatic performance data created by the keyboard 1; Reference numeral 3 designates a control circuit that reads out data from the storage device 2 and controls the process of producing sound, and also reads the data of the automatic performance created using the keyboard 1 and transfers it to the storage device 2.
write to. Reference numeral 4 denotes a sound generation circuit, which generates and emits musical tones for performance/automatic performance according to instructions from the control circuit 3. Reference numeral 5 denotes a timing clock oscillation circuit, which creates timings for reading and writing data for automatic performance/automatic accompaniment. A start switch 6 instructs the control circuit 3.8 to start automatic performance/accompaniment. 7 is a storage device that stores automatic accompaniment data. 8 is! This is a control circuit that reads automatic accompaniment data from the storage device 7 and controls the process up to sound generation. Reference numeral 9 denotes a sound generation circuit, which generates and emits automatic accompaniment musical tones according to instructions from the control circuit 8.

Reference numeral 10 denotes a volume or shoot switch for controlling the volume of the sound generation circuit 9.

The operation of the electronic musical instrument configured as described above will be described below.

When storing a performance with automatic accompaniment, the player turns on the start switch 6, and the control circuit 3 and the control circuit 8 start operating at the same time. The control circuit 8, based on the timing obtained from the timing clock oscillation circuit 5,
The automatic accompaniment data stored in the storage device 7 is read out, and the sound generation circuit 9 generates and emits automatic accompaniment musical tones. The performer performs on the keyboard 1 in accordance with the generated and emitted automatic accompaniment musical tones. At the same time, the control circuit 3 creates time information based on the timing obtained from the same timing clock oscillation circuit 5, and stores performance data of the player on the keyboard 1 in the storage device 2 together with the time information.

When the start switch 6 is turned on, the control circuit 3 and the control circuit 8 start operating at the same time to reproduce the performance with automatic accompaniment stored as described above. In this case, the control circuit 8 reads the automatic accompaniment data stored in the storage device 7 based on the timing obtained from the timing clock oscillation circuit 5, and causes the sound generation circuit 9 to generate and emit automatic accompaniment musical tones. The control circuit 3 also reads the performance data stored in the storage device 2 based on the timing obtained from the timing clock oscillation circuit 5, and causes the sound generation circuit 4 to generate and emit musical tones of the stored performance. In this way, automatic performance with automatic accompaniment becomes possible.

Problems to be Solved by the Invention However, in the conventional configuration described above, when automatic performance with automatic accompaniment is performed, the start of automatic performance is the same as the start of automatic accompaniment, so the beginning of the song is played without automatic accompaniment, for example, as a piano solo. ), and automatic accompaniment such as drums is added in the middle of the performance. To memorize/play back (automatically play) a song that starts with ``) and adds automatic accompaniment such as drums in the middle of the performance, turn off the automatic accompaniment at the beginning of the song using the volume/mute switch 10. , the performer had to operate this during the performance to add automatic accompaniment. However, it is very difficult to operate the volume/mute switch 10 at the right time so that the sound starts exactly from the beginning of the measure during a performance, and the performer has the disadvantage of requiring advanced skill to do so. It had

A timing diagram of the performance/automatic performance and the start of sound generation of automatic accompaniment in this case is shown in FIG. 2(a). In the same figure, 1.2
．． 3.4 constitutes one measure, but it can be seen that the automatic accompaniment is not sounded from 1 in the third measure.

A method has also been considered in which such performances are memorized and played back by dividing the start switch 6 into automatic performance and automatic accompaniment and starting them separately.
This had the disadvantage that the automatic performance and automatic accompaniment had a difference in the measures, and the performances did not match. Figure 2 (b) shows the timing diagram of the start of sound for performance/automatic performance and automatic accompaniment in this case.
Shown below. In the figure, the automatic accompaniment is sounded from 1, but it can be seen that the timing of the performance/automatic performance is shifted.

The present invention solves the above conventional problems, and allows automatic accompaniment to be added smoothly from the middle of a song by simply operating the switch 7 while the performer is playing or automatically playing. The purpose is to provide electronic musical instruments.

Means for Solving the Problems In order to achieve this object, the electronic musical instrument of the present invention includes means for detecting the beginning of a measure of automatic accompaniment using a clock signal for obtaining automatic accompaniment readout timing, and detecting the beginning of a bar of automatic accompaniment using the detection means. and means for controlling the volume/pronunciation of automatic accompaniment in accordance with the timing of the beginning of a bar.

According to the present invention, with the above-described configuration, it is possible to detect the beginning of a measure of automatic accompaniment and control the volume/pronunciation of automatic accompaniment in accordance with the timing of the detected beginning of a measure. automatic accompaniment can be started accurately.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the electronic musical instrument of the present invention. In FIG. 1, 11 is a performance keyboard for creating data for automatic performance. Reference numeral 12 denotes a storage device for storing automatic performance data created using the keyboard 11. Reference numeral 13 denotes a control circuit which reads data from the storage device 12 and controls up to sound generation, and also takes in performance information from the keyboard 11 and stores the data in the storage device 12.

Reference numeral 14 denotes a sound generation circuit, which generates and emits musical tones for performance/automatic performance according to instructions from the control circuit 13.

15 is a timing clock oscillation circuit, which automatically performs/
Create timing for reading and writing automatic accompaniment data. A start switch 16 instructs the control circuit 13.18 to start automatic performance/accompaniment. 1
7 is a storage device that stores automatic accompaniment data. 18
1 is a control circuit which reads automatic accompaniment data from the storage device 17 and generates and emits automatic accompaniment musical tones using the sound generation circuit 19. 20 is a beat display circuit such as an LED or a speaker for allowing the performer to detect the beat of the automatic accompaniment. 2
Reference numeral 1 denotes a measure detection circuit that detects the timing of the beginning of a measure of automatic accompaniment based on a clock signal output from the timing clock oscillation circuit 15. 22 is the measure detection circuit 2
The output signal No. 1 controls the sound generation circuit 19 to control the volume/sounding of automatic accompaniment.

The operation of the electronic musical instrument configured as described above will be described below.

When storing a performance with automatic accompaniment as in the past, when the player turns on the start switch 16, the control circuit 13 and the control circuit 18 start operating at the same time. The control circuit 18 reads the automatic accompaniment data stored in the storage device 17 based on the timing obtained from the clock oscillation circuit 15, and causes the sound generation circuit 19 to generate and emit automatic accompaniment musical tones. The performer performs on the keyboard 11 in accordance with the generated and emitted automatic accompaniment musical tones. At the same time, the control circuit 13 creates time information based on the timing similarly obtained from the clock oscillation circuit 15, and stores performance data of the player using the keyboard 11 in the storage device 12 together with the time information.

Also, during reproduction, when the start switch 16 is turned on or a key is pressed on the keyboard 11, the IIL control circuit 13 and the control circuit 8 start operating simultaneously. The control circuit 18 reads the automatic accompaniment data stored in the storage device 17 based on the timing obtained from the timing clock oscillation circuit 15, and causes the sound generation circuit 19 to generate and emit automatic accompaniment musical tones. The control circuit 13 similarly reads the performance data stored in the storage device 12 at the timing obtained from the timing clock oscillation circuit 15, and generates and emits the performance stored before the sound generation circuit 14. This enables automatic performance with automatic accompaniment.

Furthermore, when storing/playing back (automatically playing) a song in which automatic accompaniment is added midway through the performance, the player first presses the keyboard 11, and only the control circuit 13 starts operating. The control circuit 13 creates time information based on the timing obtained from the timing clock oscillation circuit 15, and stores performance data of the player using the keyboard 11 in the storage device 12 together with the time information. Next, when the performer turns on the start switch 16 at any timing during the performance, the control circuit 18 is activated, and the control circuit 18 transfers the automatic accompaniment data read from the storage device 17 to the sound generation circuit 1.
9 or at the same time, the sound generation control circuit 22 outputs the sound generation circuit 1.
9 to mute the automatic accompaniment that should be sounded. Thereafter, when the measure detection circuit 21 first detects a measure of automatic accompaniment based on the clock signal, the sound generation control circuit 22 releases the data control to the sound generation circuit 19. This makes it possible to start automatic accompaniment sounding without causing any deviation from automatic performance. A timing diagram of the performance/automatic performance and the start of the automatic accompaniment sound generation at this time is shown in FIG. 2(e).

Furthermore, the performer can press the start switch 1 at any timing.
After performing the operation 6, it is easy to check the automatic accompaniment position before the start of sound on the beat display circuit 20, and to start the performance with automatic accompaniment at the same time as the start of sound of automatic accompaniment.

As described above, according to the present embodiment, there is provided a bar detection circuit that detects bars of automatic accompaniment using a clock signal for obtaining automatic accompaniment readout timing, and a bar detection circuit that detects bars of automatic accompaniment based on a clock signal for obtaining automatic accompaniment readout timing, and a bar detection circuit that detects bars of automatic accompaniment, and performs automatic accompaniment in accordance with the timing of the detected bars. By providing a sound generation control circuit that controls the volume/sounding of the music, it is possible to easily perform/automatically perform a song in which automatic accompaniment starts in the middle.

In this embodiment, when the start switch 16 is turned on during a performance in which automatic accompaniment is added from the middle of the song, the control circuit 18 is turned on.
After that, when the measure detection circuit 21 first detects the beginning of a measure based on the clock signal, the sound generation is started. However, the control circuit 18 is activated when the key is pressed on the keyboard 11, that is, from the beginning of the song. All automatic accompaniment may be muted until the switch 16 is turned on, and the same control may be performed after the switch 16 is turned on.

Effects of the Invention As described above, the present invention provides means for detecting measures of automatic accompaniment and means for controlling the volume/pronunciation of automatic accompaniment in accordance with the timing of the detected measures. This makes it possible to realize an excellent electronic musical instrument that can perform/automatically perform a song that starts with .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an electronic musical instrument according to an embodiment of the present invention, FIG. 2 is a timing diagram showing the start of sound for automatic performance and automatic accompaniment, and FIG. 3 is a block diagram showing a conventional electronic musical instrument. 15... Clock initiation circuit, 18...
automatic accompaniment control circuit, 19... automatic accompaniment sound generation circuit, 20... automatic accompaniment beat display circuit, 21.
...Measure start detection circuit, 22...Pronunciation control circuit. Name of agent: Patent attorney Shigetaka Awano and one other person Figure 1 Figure 2

Claims (2)

[Claims] (1) automatic accompaniment means for repeatedly reading out accompaniment patterns stored in a storage device; means for generating a clock signal for obtaining the read timing of fully automatic accompaniment; means for starting the automatic accompaniment means; An electronic musical instrument comprising: means for detecting the beginning of a measure of automatic accompaniment; and means for controlling the volume or sounding signal of the automatic accompaniment in accordance with the timing of the beginning of a measure detected by the detecting means. (2) The electronic musical instrument according to claim 1, further comprising means for allowing the player to detect the beat of the automatic accompaniment.