JPS5545229A - Tone quality adjustment unit - Google Patents

Tone quality adjustment unit

Info

Publication number
JPS5545229A
JPS5545229A JP11826578A JP11826578A JPS5545229A JP S5545229 A JPS5545229 A JP S5545229A JP 11826578 A JP11826578 A JP 11826578A JP 11826578 A JP11826578 A JP 11826578A JP S5545229 A JPS5545229 A JP S5545229A
Authority
JP
Japan
Prior art keywords
circuit
output
quality adjustment
tone quality
feedback quantity
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
JP11826578A
Other languages
Japanese (ja)
Inventor
Saburo Takaoka
Ryoji Azuma
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP11826578A priority Critical patent/JPS5545229A/en
Priority to US06/078,269 priority patent/US4328465A/en
Priority to GB7933037A priority patent/GB2034138B/en
Priority to DE19792938798 priority patent/DE2938798A1/en
Publication of JPS5545229A publication Critical patent/JPS5545229A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control

Landscapes

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

PURPOSE:To make it possible to set freely a frequency characteristic in a wide range by connecting an active circuit having a prescribed frequency characteristic and an operational amplifier, which changes the feedback quantity to control gain, in series and providing a mixer circuit in the output and the input to constitute a tone quality adjustment unit. CONSTITUTION:Active circuit 2 having a transfer characteristic determined by a desired sound adjustment range and gain control circuit 3 which has an operational amplifier and changes the feedback quantity to control gain are connected in series, and input signals and the output of circuit 3 are mixed by first mixer circuit 1. The output of circuit 1 is inputted to circuit 2 and second mixer circuit 4. In circuit 4, the output of circuit 3 and the output of circuit 1 are mixed, and the result is outputted from terminal 6. By changing feedback quantity x of circuit 3, a frequency range can be freely adjusted in a wide range as shown in the figure, and it is difficult to receive hum and other noises, so that a superior tone quality adjustment can be performed by digital code signals.
JP11826578A 1978-09-26 1978-09-26 Tone quality adjustment unit Pending JPS5545229A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP11826578A JPS5545229A (en) 1978-09-26 1978-09-26 Tone quality adjustment unit
US06/078,269 US4328465A (en) 1978-09-26 1979-09-24 Tone control circuit utilizing variable gain amplifier
GB7933037A GB2034138B (en) 1978-09-26 1979-09-24 Variable gain amplifier circuit
DE19792938798 DE2938798A1 (en) 1978-09-26 1979-09-25 CONTROL AMPLIFIER CIRCUIT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11826578A JPS5545229A (en) 1978-09-26 1978-09-26 Tone quality adjustment unit

Publications (1)

Publication Number Publication Date
JPS5545229A true JPS5545229A (en) 1980-03-29

Family

ID=14732345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11826578A Pending JPS5545229A (en) 1978-09-26 1978-09-26 Tone quality adjustment unit

Country Status (1)

Country Link
JP (1) JPS5545229A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59149411A (en) * 1983-02-15 1984-08-27 Matsushita Electric Ind Co Ltd Adjusting device of multi-division frequency characteristic
JPS61103486A (en) * 1984-10-25 1986-05-21 ブラザー工業株式会社 Material piece folding apparatus for sewing machine
JPS6177974U (en) * 1984-10-25 1986-05-24

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839156A (en) * 1971-09-22 1973-06-08
JPS5313860A (en) * 1976-07-23 1978-02-07 Pioneer Electronic Corp Tone control device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839156A (en) * 1971-09-22 1973-06-08
JPS5313860A (en) * 1976-07-23 1978-02-07 Pioneer Electronic Corp Tone control device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59149411A (en) * 1983-02-15 1984-08-27 Matsushita Electric Ind Co Ltd Adjusting device of multi-division frequency characteristic
JPS61103486A (en) * 1984-10-25 1986-05-21 ブラザー工業株式会社 Material piece folding apparatus for sewing machine
JPS6177974U (en) * 1984-10-25 1986-05-24
JPS6314787Y2 (en) * 1984-10-25 1988-04-25
JPS6328636B2 (en) * 1984-10-25 1988-06-09 Brother Ind Ltd

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