JPS58194545U - Multiplex filter automatic control device for noise reduction equipment - Google Patents
Multiplex filter automatic control device for noise reduction equipmentInfo
- Publication number
- JPS58194545U JPS58194545U JP9099182U JP9099182U JPS58194545U JP S58194545 U JPS58194545 U JP S58194545U JP 9099182 U JP9099182 U JP 9099182U JP 9099182 U JP9099182 U JP 9099182U JP S58194545 U JPS58194545 U JP S58194545U
- Authority
- JP
- Japan
- Prior art keywords
- noise reduction
- multiplex filter
- signal
- automatic control
- control device
- 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
- Noise Elimination (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
図はこの考案の一実施例を示すブロック線図である。
２・・・アンプ、３・・・ＭＰＸフィルタ、４・・・ノ
イズリダクション回路、６・・・１９ＫＨｚ、 ７・・
・平均化回路、８・・・レベル検出回路。The figure is a block diagram showing one embodiment of this invention. 2...Amplifier, 3...MPX filter, 4...Noise reduction circuit, 6...19KHz, 7...
- Averaging circuit, 8... Level detection circuit.
Claims (1)
、１９ｋＨ２のバンドパスフィルタと、該フィルタを経
た信号を平均化する平均化回路と、該回路を経た信号の
レベルを検出するレベル検出回路とを備え、上記ノイズ
リダクション装置への入力信号中の１９ＫＨｚ信号成分
の大小を判別し、該成分が定められた値より大な名とき
はノイズリダクション装置へ入力される信号をマルチプ
レックスフィルタに通過ｉしめ、上記成分が小なると′
きにはマルチプレックスフィルタを通過せしめる
ことなくノイズリダクション装置へ入力するように、上
記レベル検出回路の出力に応じてマルチプレックスフィ
ルタを制御することを特徴とするノイズリダクション装
置のマルチプレックスフィルタ自動制御装置。An audio device having a noise reduction device, comprising: a 19kHz bandpass filter, an averaging circuit that averages a signal that has passed through the filter, and a level detection circuit that detects the level of a signal that has passed through the circuit; The magnitude of the 19KHz signal component in the input signal to the device is determined, and if the component is larger than a predetermined value, the signal input to the noise reduction device is passed through a multiplex filter, and the component is determined to be smaller. Then'
A multiplex filter automatic control device for a noise reduction device, characterized in that the multiplex filter is controlled according to the output of the level detection circuit so that the output is inputted to the noise reduction device without passing through the multiplex filter. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9099182U JPS58194545U (en) | 1982-06-17 | 1982-06-17 | Multiplex filter automatic control device for noise reduction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9099182U JPS58194545U (en) | 1982-06-17 | 1982-06-17 | Multiplex filter automatic control device for noise reduction equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58194545U true JPS58194545U (en) | 1983-12-24 |
Family
ID=30099424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9099182U Pending JPS58194545U (en) | 1982-06-17 | 1982-06-17 | Multiplex filter automatic control device for noise reduction equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58194545U (en) |
-
1982
- 1982-06-17 JP JP9099182U patent/JPS58194545U/en active Pending
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