JPS647807A - Amplitude compressing/expanding circuit - Google Patents
Amplitude compressing/expanding circuitInfo
- 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
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.
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) |
-
1987
- 1987-06-30 JP JP62163614A patent/JPS647807A/en active Pending
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