JP2549445Y2 - Electronic musical instrument with rhythm playing device - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The invention relates to an electronic musical instrument with a rhythm playing device.

[Prior art and its problems] In the related art, there is a conventional art in which a so-called accompaniment pattern including a rhythm pattern and a base pattern is switched according to touch data generated based on keystroke strength and progress of a chord. That is, in addition to a normal rhythm pattern called a normal pattern, a variation pattern having a slightly changed pattern is prepared, and the normal pattern and the variation pattern are switched based on conditions such as touch data and chord progression. there were.

However, with this method, the parameters of the melody playing side with the right hand are only touch data, so if you want to change the rhythm pattern only with the melody playing, you can make only rough changes, and you can handle very fine performances There was a disadvantage that it could not be done.

[Purpose of the Invention] The present invention has been made in view of the above-mentioned circumstances, and an object of the invention is to provide an electronic musical instrument with a rhythm playing device that can greatly change a rhythm pattern through a key depression operation.

[Gist of the invention] In order to achieve the above-mentioned object, the invention divides the rhythm of the performance into a plurality of rhythms each having a plurality of rhythm patterns, and performs touch data indicating a key-strength and key-stroke indicating a key-stroke interval. The key point is that any one of the rhythm patterns is automatically selected based on the key interval data.

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

<Structure of Embodiment> FIG. 1 shows an overall circuit diagram of an electronic musical instrument with a rhythm playing device constructed by applying the present invention. In FIG. 1, reference numeral 1 denotes a CPU for controlling the entire circuit. Indicates that the keyboard 2, switch 3, and display 4 are directly connected,
The ROM 6, the RAM 7, the tone generator 8 and the rhythm tone generator 9 are connected via the bus line 5, and the outputs of the tone generator 8 and the rhythm tone generator 9 are wired OR-connected to form the D / A converter 1.
Input to 0.

The switch unit 3 includes a rhythm group switch 3a, a rhythm pattern selection switch 3b and a selector 3c for selecting types of rhythm patterns such as rock, waltz, and bossa nova shown in the panel drawing of FIG. It includes all the switches necessary for this type of electronic musical instrument.

The rhythm group switch 3a is a kind of ring switch. For example, a pattern of one rhythm type such as rock or waltz is converted into three different patterns, that is, a normal tempo type normal pattern (NORMA).
L), a strong pattern of the up tempo system (UP) and a weak pattern of the slow tempo system (SLOW) are specified in a circular manner, and each specified pattern corresponds to the corresponding LED4 on the display unit 4.
Displayed by _a-1 (NORMAL), LED4 _a-2 (UP) or LED4 _a-3 (SLOW). Also, each pattern selection switch 3b is
It consists of ten switches, and by operating any of these switches, a rhythm type such as rock or waltz is selected. The operated switch is a pattern LED 4 on the display unit 4 provided corresponding to the upper part of each switch.
Displayed by lighting b. Furthermore, in this embodiment, each switch has a selector 3c for selecting two types of rhythms, front and back. Therefore, in the present embodiment, ten types of rhythms are specified by the ten switches when the selector 3c specifies the table rhythm, and another ten types of rhythms are specified when the selector 3c specifies the table rhythm. Rhythm is specified. The selection of the front or back of the selector 3c is performed by turning on the selector LED 4c at the top.

As described above, in the present embodiment, the patterns of each rhythm such as rock and waltz are divided into three rhythm groups of a normal pattern, a strong pattern, and a weak pattern. Then, after selecting one group by the rhythm group switch 3a, the rhythm pattern of the corresponding rhythm type in this group is selected by operating the pattern selection switch 3b. I have.

FIG. 3 is a diagram schematically showing which rhythm group is selected based on a combination of the touch data TD indicating the key pressing intensity and the key pressing interval, that is, the speed data TS. On the horizontal axis, the touch data TD is shown, and on the vertical axis, the speed data TS is shown. The touch data TD indicated on the horizontal axis is divided into three by the low threshold level TD _L and the high threshold level TD _H, in the same way,
The speed data TS shown on the vertical axis is also a low threshold level TS _L
And by the high threshold level TS _H is divided into three, located diagonally, three regions indicated by "N", area normal pattern region, located in the upper right is indicated by "UP" Is the strong pattern area, and the area located at the lower left, indicated as “SLOW”, indicates the weak pattern area, respectively, and as will be clear from the description below, each pattern area is defined in advance. and has high and low four thresholds TD _L, TD _H, TS _L and based on TS _H and keystroke is determined by comparison between the respective change TD and TS, threshold TD _L as a predetermined value, TD _H , TS
_L and TS _H same various registers corresponding respectively TD _L, T
D _H , T S _L and T _H are stored, respectively.

Returning to FIG. 1 again, the CPU 1 detects a key pressing operation on the keyboard section 2 and sends a key code corresponding to the pressed key and previously selected timbre data to the musical tone creating section 8. On the other hand, a predetermined rhythm group is selected based on the touch data indicating the key pressing strength and the speed data indicating the key pressing interval,
Then, the designated rhythm pattern data is sent to the rhythm sound creating section 9, so that the tone data created by the tone creating section 8 and the rhythm data created by the rhythm sound creating section 9 are both D / A converters 10. After being converted to an analog value in, the sound is emitted as a musical sound by the speaker 12 via the amplifier 11.

The ROM 6 stores a program for the CPU 1 to control the entire circuit, and the RAM 7 stores the above-described registers TD _L and T _L
In addition to D _H , T _SL, and T _H , it is configured to include all other registers used in the following operation description.

<Operation of Embodiment> Next, the operation of this embodiment will be described.

FIG. 4, FIG. 5, FIG. 6, and FIG. 7 are flowcharts showing the flow of operation.

FIG. 4 is a flowchart showing a flow of an operation for setting a musical instrument to a desired rhythm group in response to a manual operation. This flowchart is based on the fact that the rhythm group switch 3a in the switch section 3 is turned on. Starting, the CPU 1 increments the rhythm group register RHYGRP by 1 in step S1, and then determines whether or not the content of the rhythm group register RHYGRP is equal to 1 in step S2.

If the determination in step S2 is YES, since this corresponds to a normal pattern, in step S3,
The previously specified rhythm group is specified as a normal tempo type normal pattern group, and the rhythm type of the rhythm type currently specified by the pattern select switch 3b and the selector 3c is selected from the normal pattern group. Returns after switching, but if NO, the rhythm group register
Judge whether the content of RHYGRP is equal to 2 (step
S4).

If the determination in step S4 is YES, this corresponds to a strong pattern, so in step S5, the previously specified rhythm group is designated as an up-tempo strong pattern group. The rhythm pattern of the rhythm type currently designated by the pattern select switch 3b and the selector 3c is switched from within the group of the strong patterns, and the process returns.

If the determination in step S4 is NO, in step S6, the rhythm group register RHYGRP is set to 0, and the previously specified rhythm group is designated as a slow-tempo weak pattern group. Further, the rhythm pattern of the rhythm type currently designated by the pattern select switch 3b and the selector 3c is switched from within the group of the weak patterns, and the process returns.

FIG. 5 is a flowchart showing a flow of an operation for selecting a rhythm pattern such as lock, waltz, and boss nova, and is started every time any one of the ten pattern select switches 3b is turned on. When one of the pattern select switches 3b is turned on, the rhythm type assigned to this switch, the rhythm group specified by the rhythm group switch 3a, and the rhythm type pattern assigned to this switch are The designated rhythm pattern is switched to the designated rhythm pattern. FIG. 6 is a flowchart for detecting a key pressing interval time. This flowchart starts with a key pressing operation. In step W1, the CPU 1 performs a sound generation process for the pressed key and then executes a current process for the touch data. The average value is calculated based on the average value up to and the current touch data, and is used as the reference touch data TD (step
W2) Then, based on the average value of the performance interval so far and the key press interval from the previous time to the current time, the average value is obtained,
This is set as reference speed data TS (step W3), and the process returns.

The touch data TD and the speed data TS obtained through the above processing are the same various registers TD and
Stored in the TS.

FIG. 7 is a flowchart for determining the three pattern areas shown in FIG. 3 based on the key pressing operation on the keyboard unit 2. This flowchart starts at the beginning of each bar, and the CPU 1 executes step Z1. in the content of the register TS, it is determined whether or larger than the content of the register TS _H, if YES, the in step Z6, the contents of register TD determines whether less than the contents of register TD _L.

If the determination in step Z6 is YES, this corresponds to the upper left normal region (N) in FIG. 3, so the process proceeds to step Z5, where the rhythm group currently set by the rhythm group switch 3a is set to the normal region. It is determined whether or not the group is a tempo type normal pattern group.

If the determination in step Z5 is YES, the rhythm processing is performed as it is (step Z13), but if NO, that is, if a group other than the normal tempo type normal pattern group is set, this rhythm processing is performed. The rhythm group is set to a normal tempo rhythm group, and the rhythm pattern is switched to the pattern of the rhythm type currently designated by the pattern select switch 3b and the selector 3c (step Z8), and then the rhythm processing is performed (step Z13). And return. That is, step Z5,
A series of processes in Z8 and Z13 is a process of a normal tempo system, and is hereinafter treated as a normal pattern process.

If the determination in step Z6 is NO, this corresponds to the strong pattern area (UP) in FIG.
To determine whether the currently set tempo group is a strong pattern.

If the determination in step Z11 is YES, the rhythm process is performed as it is (step Z13), but if NO, that is, a group other than the group of the strong pattern of the up-tempo system is set. For example, this rhythm group is set as an up-tempo rhythm group, and the rhythm pattern is switched to the pattern of the rhythm type currently designated by the pattern select switch 3b and the selector 3c (step Z12). Step Z13), and return. That is, step Z1
A series of processing in 1, Z12 and Z13 is an up-tempo-type processing, and is hereinafter treated as strong pattern processing.

If the determination in step Z1 is NO, CPU 1
Proceeds to step Z2, where the content of the register TS, it is determined whether or smaller than the content of the register TS _L, then the YES in the condition, the contents of register TD to determine whether greater than register TD _H (Step Z7).

If the determination in step Z7 is YES, this corresponds to the lower right normal area in FIG.
The normal pattern processing requested in Z5, Z8 and Z13 is performed and the process returns. If NO, this corresponds to the weak pattern area (SLOW) in FIG.
Then, it is determined whether the currently set tempo group is a weak pattern, that is, a slow tempo group.

If the determination in step Z9 is YES, the rhythm processing is performed as it is (step Z13). However, if NO, that is, if a group other than the slow tempo-based weak pattern group is set, this rhythm processing is performed. The rhythm group is set as a slow tempo rhythm group, and the rhythm pattern is switched to the pattern of the rhythm type currently specified by the pattern select switch 3b and the selector 3c (step Z14), and then the rhythm processing is performed (step Z13). And return. That is, a series of processes in steps Z9, Z10, and Z13 are slow tempo-based processes, and are hereinafter treated as weak pattern processes.

If if NO in the decision in above step Z2, the process proceeds to step Z3, it is determined whether the contents of register TD is greater than the content of register TD _H, if if YES, which FIG. 3 , The strong pattern processing defined by steps Z11, Z12 and Z13 is performed, and the process returns.

Further, if NO in the determination in Step Z3, in step Z4, it is determined whether the contents of register TD is smaller than the content of register TD _L, if if YES,
Since this corresponds to the weak pattern area (SLOW) in FIG. 3, the weak pattern processing defined in steps Z9, Z10 and Z13 is performed, and the process returns.

Finally, if the determination in step Z4 is NO, this is the normal area (N) at the center in FIG.
Therefore, the normal pattern processing defined by steps Z5, Z8, and Z13 is performed, and the process returns.

[Effects of the Invention] As described above, the invention stores a plurality of rhythm pattern groups each having a plurality of rhythm patterns of different forms, and specifies one of the rhythm pattern groups by an external operation. Since one rhythm pattern is selected and output from the specified rhythm pattern group based on the touch data indicating the key press interval time and key press strength of the keyboard, the rhythm pattern is determined based on the key press operation. Can be greatly changed.

[Brief description of the drawings]

FIG. 1 is an overall circuit diagram of an electronic musical instrument constructed by applying the present invention, FIG. 2 is a diagram showing a panel surface, and FIG. 3 is a diagram showing three parts divided by touch data TD and performance speed data TS. FIG. 4, FIG. 5, FIG.
6 and 7 are flowcharts showing the flow of the operation. 1 ... CPU, 2 ... keyboard part, 3 ... switch part, 4 ...
Display unit, 6 ROM, 7 RAM, 8 Music creation unit 9
...... Rhythm sound generator.

Claims (1)

(57) [Scope of request for utility model registration] 1. A keyboard comprising a plurality of keys, storage means for storing a plurality of rhythm pattern groups each having a plurality of rhythm patterns of different forms, and a rhythm pattern stored in the rhythm pattern storage means by an external operation. Rhythm designating means for designating any one of the groups; operation interval time detecting means for detecting operation interval time data indicating the time between key press operations performed continuously by the keyboard; Touch data detection means for detecting touch data indicating key strength; and the rhythm designation based on touch data detected by the touch data detection means and operation interval time data detected by the operation interval time detection means. Rhythm pattern selection that selects and outputs one rhythm pattern from the rhythm pattern group specified by the means Electronic musical instrument with a rhythm performance apparatus formed by comprising: a stage, a.