JPS5449118A - Automatic accompaniment apparatus - Google Patents

Automatic accompaniment apparatus

Info

Publication number
JPS5449118A
JPS5449118A JP11590377A JP11590377A JPS5449118A JP S5449118 A JPS5449118 A JP S5449118A JP 11590377 A JP11590377 A JP 11590377A JP 11590377 A JP11590377 A JP 11590377A JP S5449118 A JPS5449118 A JP S5449118A
Authority
JP
Japan
Prior art keywords
tones
frequencies
circuit
basic frequencies
voltage control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11590377A
Other languages
Japanese (ja)
Inventor
Naota Katada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP11590377A priority Critical patent/JPS5449118A/en
Publication of JPS5449118A publication Critical patent/JPS5449118A/en
Pending legal-status Critical Current

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  • Electrophonic Musical Instruments (AREA)

Abstract

PURPOSE: To let accompaniment tones accoding to external tones be automatically produced by detecting and storing the basic frequencies of the external tones having been picked up and producing the musical tones based on the storage contents.
CONSTITUTION: The audio signals of guitars, etc. having been picked up are detected of their basic frequencies by a frequency detector 19 which is provided with a plurality of LPFs of different cutoff frequencies, a square wave conversion circuit and a frequency dividing circuit and the pulses whose frequencies are the basic frequencies the applied to a frequency-voltage conversion circuit 20 which is formed of a differentiation circuit, one-shot circuit, etc. The causes the voltages corresponding to the basic frequencies to be stored in a sample holding circuit 21 provided with memory elements such as capacitors, etc. According to these read- out voltages, the accompaniment tones corresponding to the basic frequencies from a voltage control frquency oscillator 22 go through a voltage control variable filter 23, voltage control variable gain amplifier 26, etc. connecting to envelope generators 27, 28, whereby the accompaniment tones corresponding to the assigned rhythms are automatically produced. At the same time, it is possible to perform play by picking up voice and adding the accompaniment tones to the voice
COPYRIGHT: (C)1979,JPO&Japio
JP11590377A 1977-09-27 1977-09-27 Automatic accompaniment apparatus Pending JPS5449118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11590377A JPS5449118A (en) 1977-09-27 1977-09-27 Automatic accompaniment apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11590377A JPS5449118A (en) 1977-09-27 1977-09-27 Automatic accompaniment apparatus

Publications (1)

Publication Number Publication Date
JPS5449118A true JPS5449118A (en) 1979-04-18

Family

ID=14674053

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11590377A Pending JPS5449118A (en) 1977-09-27 1977-09-27 Automatic accompaniment apparatus

Country Status (1)

Country Link
JP (1) JPS5449118A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115097U (en) * 1981-01-08 1982-07-16
JPS58152290A (en) * 1982-03-05 1983-09-09 日本電気株式会社 Automatically adaptive accompanying apparatus
JPS63137295A (en) * 1987-09-24 1988-06-09 カシオ計算機株式会社 Electronic stringed instrument

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495054A (en) * 1972-04-26 1974-01-17
JPS51104815A (en) * 1975-03-12 1976-09-17 Matsushita Electric Ind Co Ltd Denshigatsukino jidobansosochi
JPS52107821A (en) * 1976-03-07 1977-09-09 Chiyuushin Gatsuki Seizou Kk Music synthesizer for electric stringed instrument

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495054A (en) * 1972-04-26 1974-01-17
JPS51104815A (en) * 1975-03-12 1976-09-17 Matsushita Electric Ind Co Ltd Denshigatsukino jidobansosochi
JPS52107821A (en) * 1976-03-07 1977-09-09 Chiyuushin Gatsuki Seizou Kk Music synthesizer for electric stringed instrument

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115097U (en) * 1981-01-08 1982-07-16
JPS58152290A (en) * 1982-03-05 1983-09-09 日本電気株式会社 Automatically adaptive accompanying apparatus
JPH067322B2 (en) * 1982-03-05 1994-01-26 日本電気株式会社 Automatic adaptive accompaniment device
JPS63137295A (en) * 1987-09-24 1988-06-09 カシオ計算機株式会社 Electronic stringed instrument

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