JPS647807A - Amplitude compressing/expanding circuit - Google Patents

Amplitude compressing/expanding circuit

Info

Publication number
JPS647807A
JPS647807A JP62163614A JP16361487A JPS647807A JP S647807 A JPS647807 A JP S647807A JP 62163614 A JP62163614 A JP 62163614A JP 16361487 A JP16361487 A JP 16361487A JP S647807 A JPS647807 A JP S647807A
Authority
JP
Japan
Prior art keywords
input
varied
whose amplitude
output characteristic
feedback
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
JP62163614A
Other languages
Japanese (ja)
Inventor
Kenzo Akagiri
Tomoko Sato
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP62163614A priority Critical patent/JPS647807A/en
Publication of JPS647807A publication Critical patent/JPS647807A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

PURPOSE:To obtain an input/output characteristic which is varied smoothly in a desired amplitude compression ratio, by a simple constitution as a whole, by providing a second feedback circuit whose amplitude gain is varied in accordance with a signal level of an input signal, on a first feedback circuit whose amplitude gain is constant. CONSTITUTION:The titled circuit is provided with the first feedback circuit 22 whose amplitude gain is constant, and the second feedback circuits 23, 24 whose amplitude gain is varied in accordance with the signal level of an input signal S01. In such a state, an input/output characteristic of the whole can be varied gradually to an input/output characteristic determined by the first and the second feedback circuits 22, 23 and 24 by setting a signal level as a boundary in which the gain of the first and the second feedback circuits 22-24 coincide, accordingly, the input/output characteristic of the first and the second feedback circuits 23, 24 is selected to a desired characteristic. In such a way, an amplitude compressing/expanding circuit whose amplitude compression ratio is varied smoothly can obtained by a simple constitution as a whole.
JP62163614A 1987-06-30 1987-06-30 Amplitude compressing/expanding circuit Pending JPS647807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62163614A JPS647807A (en) 1987-06-30 1987-06-30 Amplitude compressing/expanding circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62163614A JPS647807A (en) 1987-06-30 1987-06-30 Amplitude compressing/expanding circuit

Publications (1)

Publication Number Publication Date
JPS647807A true JPS647807A (en) 1989-01-11

Family

ID=15777272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62163614A Pending JPS647807A (en) 1987-06-30 1987-06-30 Amplitude compressing/expanding circuit

Country Status (1)

Country Link
JP (1) JPS647807A (en)

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