JPS648358B2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to an electronic musical instrument.

[Prior Art] Conventionally, electronic musical instruments capable of performing various rhythm performances such as automatic rhythm performance and manual rhythm performance have been developed.

[Problems with the prior art] However, in the electronic musical instrument as described above, when manual rhythm performance is performed during automatic rhythm performance, the rhythm sound related to manual rhythm performance is superimposed on the rhythm sound related to automatic rhythm performance. The manual rhythm performance didn't really stand out. Another idea is to stop all automatic rhythms when manual rhythm performance starts and only produce the rhythm sounds related to manual rhythm performance, but this poses the problem that it is difficult to maintain the rhythm tempo during automatic rhythm performance. It was hot.

[Object of the Invention] This invention was made in view of the above-mentioned circumstances, and its purpose is to improve manual rhythm performance during automatic rhythm performance in an electronic musical instrument capable of automatic rhythm performance and manual rhythm performance. The purpose is to make the rhythm stand out and to make it easier to keep the rhythm when playing manual rhythms.

[Summary of the Invention] In order to achieve the above object, the present invention stops all automatic rhythms except for a specific rhythm occurring in the basic rhythm when manual rhythm performance is performed during automatic rhythm performance, and the above-mentioned manual rhythm is stopped. The main point is that rhythm sounds related to rhythm performance are generated.

[Configuration of Embodiment] An embodiment of the invention will be described in detail below with reference to the drawings.

<Overall external configuration> Figure 1 shows a plan view of the electronic keyboard instrument.
An accompaniment keyboard 1 and a melody keyboard 2 are provided on the front side of the case of the electronic keyboard instrument, and a power switch 3 is provided at the end of the electronic keyboard instrument next to the melody keyboard 2. 1. Speakers 4, 4 are provided at both ends of the back side of the melody keyboard 2. An accompaniment mode lever 5, an automatic rhythm operation section 6, a pad rhythm operation section 7, and a melody tone selection key 8 are provided between the speakers 4, 4. The accompaniment mode lever 5 is used for one-finger mode in which the chords on the accompaniment keyboard 1 are automatically played with one finger, a finger guard mode in which the chords are played automatically by holding down the chords, and a normal melody mode in which the accompaniment keyboard 1 is not used for accompaniment but for normal melody. This is used to switch to each mode of the normal mode for performance. Further, the automatic rhythm operation section 6 is provided with rhythm selection keys 9 for automatic rhythm performance such as lock and disco, and a rhythm start/stop key 10 for starting and stopping the automatic rhythm performance.

The pad rhythm operation section 7 includes a bass drum pattern switch 11 as shown in FIG.
Padded tone selection switch 12, 13, 14, 15
and pad switches 16, 17, 18, and 19 are provided. The pad switches 16 to 19 are used to emit a single attenuated sound such as a percussion instrument sound when pressed, and the pad timbre selection switches 12 to 15 select the tone of the attenuated sound produced by the pad, such as a bass drum or low bongo. The bass drum pattern switch 11 is a switch for performing an automatic rhythm performance using the bass drum sound, which is the most basic rhythm, even when the pad attenuation sound is being emitted based on the operation of the pad switches 16 to 19. be. Also, the measure shown in Figure 1
LED20 is an LED that lights up at the beginning of each measure to indicate the start timing of the measure, and beat LED2
Reference numeral 1 designates an LED that lights up at the beginning of each beat to indicate the rhythm tempo while the pads are played using the pad switches 16 to 19.

The melody tone selection key 8 is a key for selecting and specifying the tone of the melody tone played on the melody keyboard 2 and the accompaniment keyboard 1.

<Overall Circuit Configuration> Next, the overall circuit configuration of this embodiment will be described.
The switching operations of the pad tone selection switches 12 to 15 are constantly scanned and determined by the control circuit 22, and the tone data is stored in four N(I) (I=0 to 3) registers of the tone change register 23 in the CPU 40. They are compared with the timbre data preset in each of the four O(I) (I=0 to 3) registers by the previous scan discrimination, and if there is a change, the new timbre data is sent to the control circuit 22. Therefore, it is preset in the corresponding area of the timbre register 24. The tone color switching register 23 is also provided with an I flag register for specifying each of the four N(I) and O(I).

One end of the pad switches 16 to 19 is grounded, and the other end is connected to a high level potential through a resistor. When each pad switch 16 to 19 is turned on, the other end goes to a low level, which is connected to the inverter 26 to 19, respectively. 29, a low level interrupt detection signal is input and held to the interrupt detection circuit 31 of the CPU 40 via the NOR gate 30, and this signal is
Detections occur every second. When the interrupt detection signal is detected by the control circuit 22, the 4-bit pad on/off data from the inverters 26 to 29 is preset to the PAD1 register of the pad on/off register 25, and the pad on/off data in PAD1 is The pad on/off data in PAD2 is transferred to PAD2, and the pad on/off data in PAD2 is transferred to PAD3. PAD2
When the current pad on/off data of PAD1 becomes "1" for the first time compared to the previous pad on/off data of PAD3 and the pad on/off data of PAD3, it is determined that pad switches 16 to 19 have been turned on, and the pad switches 16 to 19 are turned on. PAD to output register 32
The pad on/off data of No. 3 is preset, and the pad sound generation flag of the working register 33 is turned on. Tone data corresponding to the pad switches 16 to 19 that are determined to be on is read out from the tone color register 24 and given to the PCM rhythm sound generator 34, a rhythm sound signal is created, and a pad attenuation sound is emitted from the sound system 36. Sound is output. During automatic rhythm performance, rhythm pattern data from the automatic rhythm sound generation control circuit 35 is sent to the PCM rhythm sound generation section 34, and accompaniment pattern data corresponding to the rhythm pattern data is sent to the musical sound generation section 38. , rhythm sounds and accompaniment sounds are output.

When the pad switches 16 to 19 are turned on, the drum solo flag in the working register 33 is turned on and the automatic rhythm performance is stopped.However, if the bass drum pattern switch 11 is turned on at this time, the bass drum, which is the most basic part of rhythm performance, is turned on. Only the rhythm sound produced by the system continues to be output. When the accompaniment keyboard 1 is operated following the rhythm performance by operating the pad switches 16 to 19, the output of the pad damping sound and the bass drum sound is stopped, and the automatic rhythm performance is restarted. If the accompaniment keyboard 1 is operated on the fourth beat of the final beat, the output of the pad decay tone will be stopped until the beginning of the next measure. At this time,
The working register 3 is controlled by the control circuit 22.
The accompaniment key on flag of 3 is set and standby processing is performed. While this pad decay sound is being output, the beat LED 21 lights up at the beginning of each beat depending on the tempo speed.
The tempo of the musical piece is shown.

When the pad switches 16 to 19 are turned on and "1" is set in the pad output register 32,
Accordingly, "1" is set in the chattering removal flag register 37, the pad output register 32 is cleared, and a 30 msec standby is performed.
A chattering process is performed that does not produce the same padding sound. In addition, the key code corresponding to the operation key of the melody keyboard 2 is generated by the musical tone generator 3 by the CPU 40.
8, a musical tone signal is created, and the sound signal is emitted from the sound system 36.

[Operation of the embodiment]

Next, the operation of this embodiment will be described.

<Pad tone setting process> The tone change register 23, tone register 24, pad on/off register 25, and working register 3 are set by the initialization process when the power is turned on.
3. The pad output register 32 and chattering removal flag register 37 are cleared, and now the bass drum pattern switch 11 is on, the pad tone selection switch 12 is handclap, and the pad tone selection switch 13 is set to snare drum, pad tone. When the selection switch 14 is set to open high-hat and the pad timbre selection switch 15 is set to closed hi-hat, the CPU 40 starts the pad timbre designation process shown in FIG. That is, the CPU 40 sets the I flag of the timbre change register 23 to "0" (step A1), and presets the handclap timbre data of the pad timbre selection switch 12 into the N(0) register specified by this I=0 (step A2). ), it is determined whether or not it matches the previous tone color data of O(0) (step A3). Since O(0) remains cleared, the two tone data do not match, and the CPU 40 transfers the handclap sound of N(0) to O(0) (step
A4), this O(0) timbre data is transferred and input to the PCMA of the timbre register 24 (step A5).

In this way, the timbre of the pad attenuation sound can be selected from among a plurality of timbres.

Next, since the I flag has not reached "3", the CPU 40 switches all pad tone selection switches 1.
It is determined that tone settings for 2 to 15 have not been completed (step A6), the I flag is incremented by one to ``1'' (step A7), and the pad tone for which the next snare drum is specified is selected. The pad tone setting process is performed for the switch 13 in the same manner. Then, when the pad timbre setting process is completed for the pad timbre selection switch 14 where open hi-hat is specified and the pad timbre selection switch 15 where closed hi-hat is specified, I=3, so the CPU 40 executes this process. Terminate it.

Furthermore, after this, when the pad tone selection switch 15 is switched to, for example, low bongo, the tone data of the low bongo will be preset in the N(0) register and the tone data of the closed high hat will be preset in register O(0). In step A3, it is determined that the two tone data do not match, and the low bongo pad tone setting process is performed (step A3).
A4, A5).

In this way, the timbre of the pad attenuation sound can be changed in various ways.

<Pad-on detection processing> Next, operate the rhythm selection key 9 to select the desired rhythm, and press the rhythm start/stop key 1.
If you turn on 0, rhythm performance will automatically start and the measure LED 20 will light up at the beginning of the measure, so in parallel, you can play the melody on melody keyboard 2 and accompaniment on accompaniment keyboard 1. .

Then, as shown in the upper part of FIG. 9A, when the pad switch 16 is pressed in the middle of the second beat, a low level interrupt detection signal is given to the interrupt detection circuit 31. It is determined that the pad switch 16 of the pad switches 16 to 19 is turned on, and the pad on/off data of "1000" is sent to PAD1 of the pad on/off register 25.
(Step B2). in this case
PAD2 and PAD3 remain cleared and both read "0000". And CPU40 is PAD
Take the logical sum of each bit of 2 "0000" and PAD3 "0000", take the exclusive logical sum of this logical sum data and each bit of PA1, and calculate the exclusive sum of each bit of this logical sum data and PAD1. Take the logical product,
The resulting data is preset to PAD3 (step B3). As a result, only the bits that are "1", "0", and "0" in PAD1, 2, and 3 are set to "1".
Therefore, in this case, data of "1000" is obtained, and if PAD2 and PAD3 have "1", it is not a true pad-on operation and is excluded, making it difficult to accurately determine the pad switch's on operation. will be held.

Next, the CPU 40 logically ORs each bit between "1000" of PAD3 and the pad-on data PAD ON, in this case "0000", from the chattering removal flag register 37, and combines this logical sum data with the pad-on data "0000". '' and presets the resulting data in PAD3 (step B4). As a result, a new pad operation is applied to the bit whose pad on data is "0" after the chattering time has elapsed.
Only the bit where PAD3 is set to “1” is “1”
Therefore, in this case, data of "1000" is obtained and chattering processing is performed.

Then, the CPU 40 determines that a true pad-on operation has occurred since the first bit of PAD3 is "1" (step B5), and selects the PCMA bass drum of the tone register 24 corresponding to this "1" bit. The timbre data is read out and applied to the PCM rhythm sound generator 34 to output a pad attenuation sound (step B6).

In this way, even when a melody is being played, rhythm sounds can be outputted in a desired pattern of performance sounds.

Next, the CPU 40 reads the working register 33.
Set the pad sound flag in the pad output register (PAD
OUT) 32 (steps B7, B8), PAD
PAD on/off data in 2 to PAD3, PAD
The pad on/off data in pad 1 is shifted to pad 2 (step B9).

After that, CPU40 is 2m even without pad-on.
The interrupt detection circuit 31 detects every second, and if the interrupt signal is not low, the pad on/off data of PAD2 of the pad on/off register 25 is sent.
PAD3, PAD1 pad on/off data PAD
2 and preset pad on/off data of "0000" to PAD1 (step B10).

<Chattering processing> Next, the CPU 40 outputs the pad output register (PAD
Since the first bit of OUT) 32 is set to "1" in step B8 above, it is determined that a pad-on operation has occurred (step C1), and the chattering removal flag register (PAD ON) 37 is determined.
Set the pad output register (PAD OUT)
32 (steps C2 and C3), wait until 30 msec has elapsed since the chattering removal flag register (PAD ON) 37 was set, and clear the chattering removal flag register (PAD ON) 37.
(Steps C4 and C5). This results in
For 30 m seconds after the pad-on operation, a chattering process is performed in step B4 of FIG. 5 in which the same pad attenuation sound is not produced.

<Overall processing and automatic rhythm performance/accompaniment control processing> Fig. 7 shows the main overall processing, and other processing in step D11 includes the above-mentioned pad tone setting process shown in Fig. 4, and Fig. 5. It also includes the pad-on detection process shown in FIG. 6, the chattering process shown in FIG. 6, and the automatic rhythm performance control process shown in FIG. 8, which will be described later.

After each of the above processes, the CPU 40 determines that the automatic rhythm is being played since the rhythm start/stop key 10 is turned on.
D1), since the pad sound flag was set in the working register 33 in step B7, it is determined that a pad on operation has been performed (step D2), and the accompaniment key on flag in the working register 33 is cleared (step D3). ), as shown in the middle part of FIG. 9A, the drum solo flag is set (step D4), the pad sound flag is cleared (step D5), and initialization processing for interrupting the automatic rhythm performance is performed.

Then, based on the flow of automatic rhythm performance control shown in FIG. 8, which starts after a predetermined period of time, for example, every beat of the rhythm, the CPU 40 determines, for example, that it is not currently at the beginning of the first beat (step E1), and then executes the above-mentioned step. Since the drum solo flag is turned on at D4, it is determined that the automatic rhythm performance must be interrupted (step E5), and the beat LED 21 is lit at the beginning of each beat (step E6).

In this way, after the pad is turned on, the tempo of the performance of the music is indicated by the illumination of the beat LED 21, and based on this, the rhythm performance by operating each of the pad switches 16 to 19 can be performed in accordance with the tempo.

Next, since the bass drum pattern switch 11 is turned on, the CPU 40 determines that the bass drum sound must be emitted in parallel with the emitting of the pad attenuation sound (step E7), and the lower part of FIG. As shown in the figure, only the bass drum is sounded (step E8), then other processing is performed (step E11), and the process returns to the main flow.

In this way, in this case, it is detected that the bass drum pattern switch 11 is turned on, and the bass drum sound, which is the most basic rhythm of the rhythm, continues to be emitted even during rhythm performance using the pad damped sound, making the rhythm performance using the pad damped sound even better. It can be rich and easy to play.

In this case, if the bass drum pattern switch 11 is turned off (step E7), the rhythm sound of the bass drum will not be output, and all rhythm and accompaniment sounds will be masked, as shown in the lower part of FIG. 9A. Automatic rhythm performance and accompaniment are completely interrupted.

In this way, during a rhythm performance using pad damped sounds, the automatic rhythm performance and corresponding automatic accompaniment or normal accompaniment are automatically stopped, making the performance by pad operation more prominent. There is no need to operate a switch to stop the performance.

Then, as shown in the middle row of FIG. 9A, when the accompaniment keyboard 1 key is turned on in the middle of the third beat, the CPU 4
0 is in automatic rhythm performance, and after determining that the pad sound flag and drum solo flag are set (steps D1, D2, D6), the operation of the accompaniment keys is determined (step D7), and the current playback is performed on the third beat. After determining that the fourth and final beat has not been reached (step D8), the above drum solo flag is cleared to release the suspended state of automatic rhythm performance (step D8).
D9).

Based on this, the CPU 40 executes the process of the flow shown in FIG. 8 at the beginning of the next beat, and after determining that it is not currently at the beginning of the first beat (step E1), determines whether to clear the drum solo flag (step E1). E5), resume automatic rhythm performance and accompaniment (step
E10).

In this way, by simply operating the accompaniment key, the automatic rhythm performance and accompaniment that had previously been stopped or played only by the bass drum can be restarted in their entirety. The operation of accompaniment keys and the operation of restarting automatic rhythm performance can be performed at the same time, eliminating the need for a separate switch and its operation for restarting automatic rhythm performance.

In addition, as shown in the middle row of FIG. 9B, when the accompaniment key is turned on at the fourth beat of the final beat after the pad-on operation in the middle of the second beat, the CPU 40 performs the above-mentioned step D8 after the fourth beat and before the first beat. This time, it first sets the accompaniment key on flag in the working register 33 (step D10), and when it reaches the beginning of the first beat of the next measure (step E1), sets the drum solo flag and accompaniment key on flag. After determining whether both flags are on (steps E2 and E3), the drum solo flag is cleared (step E4), and automatic rhythm performance and accompaniment are restarted (step E10).

In this way, as shown in the lower part of Figure 9B, if the accompaniment key is turned on at the fourth beat of the final beat, the automatic rhythm performance and accompaniment are resumed after waiting until the beginning of the next measure, and the performance is well-cut. The content of the rhythm performance can be changed automatically at the break of a measure, and if you want to restart the automatic rhythm performance at the beginning of a measure, you can instruct the rhythm performance to change in advance without waiting until the timing of the beginning of the measure. You can leave it there.

In the above embodiment, the push-operated pad switches 16 to 19 are used to emit the rhythm sound of the pad damping sound, but a tapping-type pad switch or the like may also be used to emit the rhythm sound of the pad damping sound. The accompaniment sound that is stopped in the middle may be an automatic accompaniment or a manual accompaniment.

Furthermore, in the above embodiment, the pad switches 16 to 1
9 was installed in the same case as the keyboard, but there was a
A similar device may be realized by providing an input device such as a pad switch and electrically connecting it to an electronic musical instrument (not limited to a keyboard instrument).

[Effects of the Invention] As explained in detail above, in this invention, when manual rhythm performance is performed during automatic rhythm performance, all automatic rhythms stop except for a specific rhythm that is occurring in the basic rhythm. This has the effect of making manual rhythm performances stand out and making it easier to maintain the tempo.

[Brief explanation of the drawing]

Figure 1 is an overall external view of the electronic musical instrument, Figure 2 is an enlarged view of the pad rhythm operation section 7, Figure 3 is the overall circuit diagram of the electronic musical instrument, and Figures 4 to 8 are pad tone setting processing and pad on detection, respectively. FIG. 9 is a flowchart of processing, chattering processing, main overall processing, and automatic rhythm performance/accompaniment control processing, and FIG. 9 is a time chart showing an example of a performance of an electronic musical instrument. 1... Accompaniment keyboard, 2... Melody keyboard, 4
...Speaker, 6...Automatic rhythm control section, 7...
Patch rhythm operation section, 10...Rhythm start/
Stop key, 11... Bass drum pattern switch, 12, 13, 14, 15... Pad tone selection switch, 16, 17, 18, 19... Pad switch, 21... Beat LED, 22... Control circuit,
23... Tone change register, 24... Tone color register, 25... Pad on/off register, 31...
Interruption detection circuit, 34...PCM rhythm sound generation section, 35...Automatic rhythm sound generation control circuit, 36...
...Sound system, 40...CPU.

Claims (1)

[Claims] 1. automatic rhythm performance instruction means for instructing automatic rhythm performance according to a rhythm performance pattern; rhythm sound generation means for generating rhythm sounds; a manual rhythm performance instruction means for giving an instruction; and when an instruction to emit a rhythm sound is given by the manual rhythm performance instruction means, the rhythm sound generation means generates a rhythm sound according to an instruction from the automatic rhythm performance instruction means. Among the plurality of rhythm sounds related to the automatic rhythm performance that is being performed, all except the specific rhythm sound occurring in the basic rhythm are stopped, and the rhythm sound instructed by the manual rhythm performance instruction means and the specific rhythm sound are An electronic musical instrument comprising: control means for controlling the rhythm sound generating means to generate only the rhythm sound of the above.