JPS6261160B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic rhythm performance device that allows automatic rhythm performance during fill-in and intro to more closely resemble actual rhythm performance.

In recent years, automatic rhythm performance devices have come to have a wide variety of rhythm types (bossa nova, march, waltz, etc.), and are capable of playing not only periodic rhythm patterns.
Intro and fill-in rhythm patterns are becoming increasingly common, and many versions that improve the monotony of automatic rhythms are emerging. However, in actual performances, intros and fill-ins are often performed by changing not only the pattern, but also the volume, so even if you play a special fill-in or intro rhythm pattern, the volume will not change. In some cases, the function may not be fully demonstrated.

Such a conventional automatic rhythm performance device is shown in FIG.

In FIG. 1, a rhythm selector switch 1 selects the type of rhythm (march, rock, waltz, etc.). 2 is a rhythm selector circuit that determines the type of rhythm according to information input from rhythm selector switch 1; 3 is a fill-in (intro) switch that selects fill-in or intro performance; 4 is input from fill-in (intro) switch 3. A fill-in (intro) signal generation circuit 5 generates a signal representing the fill-in (intro) period according to information received from the rhythm selector circuit 2;
A sound source drive circuit generates a rhythm pattern determined by a signal from the input signal and generates a signal to drive the sound source, and 6 to 8 are rhythms that generate rhythm sounds corresponding to each rhythm instrument (bandra, high hat, cowbell, etc.) A sound source 9 is a mixing amplifier that mixes the rhythm sounds of the rhythm sound sources 6 to 8.

According to this conventional automatic rhythm playing device, a rhythm sound according to a desired rhythm can be obtained, but, however,
Even during a fill-in or intro, the volume of the rhythm does not change, and for this reason, it is often buried under other sounds such as an electronic organ and is hardly audible, and it is said that it does not function as a fill-in or intro effect sufficiently. There were flaws.

The present invention is designed to eliminate such drawbacks of the conventional example, and one embodiment thereof will be described below with reference to FIG. 2.

In FIG. 2, 10 is a rhythm sound generator having the configuration as explained in FIG. 1, and 11 is a gain control circuit.

The gain control circuit 11 controls the gain of the rhythm sound obtained from the rhythm sound generator 10, and only during the fill-in (intro) period, the rhythm sound generator 10
The gain is increased by a fill-in signal from 0, and the volume of the rhythm sound is increased.
In this way, the rhythm volume changes only during the fill-in (intro), enhancing the effect of the fill-in (intro) and making it more similar to an actual rhythm performance. Of course, depending on the situation, the gain can be lowered to reduce the volume.

FIG. 3 shows another embodiment of the present invention, in which 12 is a pattern generator that generates a rhythm pattern, and 13 is an envelope forming device that forms a predetermined envelope signal based on the output of the pattern generator 12. 14 is a common sound source generation circuit, 15a, 1
5b, 15c...15n are voltage control amplifiers (VCAs) that apply a predetermined envelope to the sound source signal from the common sound source generating circuit 14 based on the envelope signal, and 16a, 16b, 16c...16n are filters for forming timbre. , the above filter 16
The outputs of a, 16b, 16c, . . . , 16n are mixed and outputted through an amplifier and a speaker (not shown).

Here, by controlling the gain of the envelope forming device 13 only during the fill-in (or intro) period using the fill-in (or intro) signal from the pattern generator 12, and increasing or decreasing the amplitude of the envelope signal as a whole, fill-in ( The rhythm volume can be changed only during the intro, increasing the effect of the fill-in (intro).

In addition, as shown by the broken line in FIG. 3, the VCA 15a, 15b, 1
Similar effects can be obtained by controlling the gains of 5c...15n. Of course VCA15a, 15
b, 15c...15n are filters 16a, 16b,
16c...16n may be inserted after the stage, and VCA1 may also be inserted in the path of the mixed rhythm sound signal.
7 may be inserted and the gain of this VCA 17 may be controlled by a fill-in (intro) signal.

As described above, according to the present invention, it is possible to automatically make the rhythm sound louder (or softer) at the time of fill-in or intro, so it is possible to easily solve the problem of the fill-in sound being buried in other musical sounds and not being heard. This makes it possible to perform rhythm performances that are closer to actual performances.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional example, FIG. 2 is a block diagram of one embodiment of the present invention, and FIG. 3 is a block diagram showing another embodiment of the present invention. 10...Rhythm sound generation device, 11...Gain control circuit, 12...Pattern generation circuit, 13...Envelope forming device, 14...Common sound source generation circuit,
15a-15n, 17...VCA, 16a-16
n...filter.

Claims (1)

[Claims] 1: a rhythm pattern generating means for generating a normal rhythm pattern and a fill-in or intro pattern; a sound source driven by the output of the rhythm pattern generating means; a sound generating means for generating the output of the sound source; and gain control means inserted at the output side or the output side of the sound source, and when a fill-in or intro pattern is generated, a fill-in or intro signal is input to the gain control means to automatically change the gain of the gain control means. An automatic rhythm performance device characterized by: