JPS58132420U - noise reduction circuit - Google Patents
noise reduction circuitInfo
- Publication number
- JPS58132420U JPS58132420U JP2952082U JP2952082U JPS58132420U JP S58132420 U JPS58132420 U JP S58132420U JP 2952082 U JP2952082 U JP 2952082U JP 2952082 U JP2952082 U JP 2952082U JP S58132420 U JPS58132420 U JP S58132420U
- Authority
- JP
- Japan
- Prior art keywords
- noise reduction
- reduction circuit
- amplifier
- compression
- output signal
- 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
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
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
第１図はノイズ低減回路の入出力特性を示す特性曲線図
、第２図はドルビーＩＣを用いた従来のノイズ低減回路
のブロック図、第３図はこの考案の一実施例を示すノイ
ズ低減回路のブロック図である。
１０・・・・・・増幅器、２０・・・・・・圧縮・伸張
回路、２０ａ・・・・・・制御入力端子、Ｃ・・・・・
・コンデンサ。Figure 1 is a characteristic curve diagram showing the input/output characteristics of a noise reduction circuit, Figure 2 is a block diagram of a conventional noise reduction circuit using Dolby IC, and Figure 3 is a noise reduction circuit showing an embodiment of this invention. FIG. 10...Amplifier, 20...Compression/expansion circuit, 20a...Control input terminal, C...
・Capacitor.
Claims (1)
いたノイズ低減回路において、出力信号の基準レベルを
ＩＣ個有の基準レベルより低い値に設定するとともに、
この出力信号を上記増幅器を介して圧縮・伸張回路の制
御入力端子に印加するようにしたノイズ低減回路。In a noise reduction circuit using an IC consisting of an amplifier with a constant gain and a compression/expansion circuit, the reference level of the output signal is set to a value lower than the reference level unique to the IC, and
A noise reduction circuit that applies this output signal to a control input terminal of a compression/expansion circuit via the amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2952082U JPS58132420U (en) | 1982-03-02 | 1982-03-02 | noise reduction circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2952082U JPS58132420U (en) | 1982-03-02 | 1982-03-02 | noise reduction circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58132420U true JPS58132420U (en) | 1983-09-07 |
Family
ID=30041308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2952082U Pending JPS58132420U (en) | 1982-03-02 | 1982-03-02 | noise reduction circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58132420U (en) |
-
1982
- 1982-03-02 JP JP2952082U patent/JPS58132420U/en active Pending
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