JPS60181795U

JPS60181795U - Chorus effect device for electronic musical instruments

Info

Publication number: JPS60181795U
Application number: JP4683285U
Authority: JP
Inventors: 西部　康二; 近藤　宣昭
Original assignee: 株式会社河合楽器製作所
Priority date: 1985-04-01
Filing date: 1985-04-01
Publication date: 1985-12-03

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来装置のブロック図である。第２図は本考案
の実施の１例のブロック図である。第３図は鋸歯状波の
倍音構造図である。第４図はフォルマントフィルタの１
例の具体的回路図である。第５図はその共振特性図である。第６図は発声初期変化
制御信号発声回路の具体的な回路図である。第７図はそ
の出力特性図である。第８図は本考案の他の実施例のブ
ロック図である。第９図は更に他の実施例のブロック図
である。第１０図はデユーディファクタ変更回路４０の
具体的回路図である。第１１図及び第１２図はパルス波
の倍音構造図である。第１３図はデユーディファクタ変
更回路４０をゲート回路に構成した場合の回路図である
。第１４図は発声初期変化制御信号発生回路の他の具体
的回路図である。第１５図はその出力特性図である。第
１６図は移相回路の具体的回路図である。第１７図はそ
の出力のベクトル図である。１０・・・楽音信号発生器、１５・・・フォルマントフ
ィルタ、１６−１・・−１６−３・・・遅延回路、２０
・・・キーイング信号発生回路、２１・・・発声初期変
化制御信号発生器、２２−１・・−２２−３・・・遅延
制御信号発生器、５０・・・低周波発振器。FIG. 1 is a block diagram of a conventional device. FIG. 2 is a block diagram of one example of implementing the present invention. FIG. 3 is a diagram of the overtone structure of a sawtooth wave. Figure 4 shows formant filter 1.
FIG. 3 is a specific circuit diagram of an example. FIG. 5 is a diagram of its resonance characteristics. FIG. 6 is a specific circuit diagram of the voicing initial change control signal voicing circuit. FIG. 7 is a diagram showing its output characteristics. FIG. 8 is a block diagram of another embodiment of the present invention. FIG. 9 is a block diagram of yet another embodiment. FIG. 10 is a specific circuit diagram of the duty factor changing circuit 40. FIGS. 11 and 12 are overtone structure diagrams of pulse waves. FIG. 13 is a circuit diagram when the due factor changing circuit 40 is configured as a gate circuit. FIG. 14 is another specific circuit diagram of the utterance initial change control signal generation circuit. FIG. 15 is a diagram showing its output characteristics. FIG. 16 is a specific circuit diagram of the phase shift circuit. FIG. 17 is a vector diagram of the output. 10... Musical tone signal generator, 15... Formant filter, 16-1...-16-3... Delay circuit, 20
... Keying signal generation circuit, 21 ... Voicing initial change control signal generator, 22-1 ... -22-3 ... Delay control signal generator, 50 ... Low frequency oscillator.

Claims

[Claims for Utility Model Registration] 1. A passage circuit for a musical tone signal obtained from a musical tone signal generator by key operation is connected to a plurality of variable delay circuits, and these delay circuits are connected to a plurality of variable delay circuits generated by a delay control signal generator. In the device in which each control is performed using a control signal, a formant filter is interposed in the musical tone signal passage circuit, and a keying signal generation circuit is provided, the output terminal of which is connected to a voicing initial change control signal generator, and the output terminal thereof is connected to a voicing initial change control signal generator. A chorus effect device for an electronic musical instrument, characterized in that a terminal is connected to the musical tone signal generator or the delay control signal generator. 2. The voice initial change control generator comprises a circuit that generates a control signal that oscillates greatly from a steady state in response to a keying signal generated by a keying signal generating circuit, and then attenuates to return to a steady state. A chorus effect device for an electronic musical instrument as described in paragraph 1. 3. The utterance initial change control signal generator includes a low-frequency oscillator for generating a vibrato signal, and the keying signal generated by the keying signal generating circuit adds flavor to the vibrato signal. Chorus effect device for the electronic musical instrument included. 4. A chorus effect device for an electronic musical instrument as set forth in claims 1 to 3 of the utility model registration claim, wherein the musical tone signal generated from the musical tone signal generator is a sawtooth wave. 5. A chorus in an electronic musical instrument according to claims 1 to 3 of the utility model registration, which is obtained by changing the musical tone signal generated by the musical tone signal generator into a pulse wave with a duty factor of 10:1 to 10:4. effect device. 6 The formant filter is 800H2. A chorus effect device for an electronic musical instrument as set forth in claims 1 to 5 of the utility model registration claim, comprising four filters each having resonance points near 1200H7, 2600H2, and 3200H2. 7 The formant filter is 800H211200
Utility model registration claims consisting of three filters each having resonance points near Hz and 3000H2 Claims 1 to 5
A chorus effect device for an electronic musical instrument described in Section 1.