JPH0344328U - - Google Patents

Info

Publication number
JPH0344328U
JPH0344328U JP10317189U JP10317189U JPH0344328U JP H0344328 U JPH0344328 U JP H0344328U JP 10317189 U JP10317189 U JP 10317189U JP 10317189 U JP10317189 U JP 10317189U JP H0344328 U JPH0344328 U JP H0344328U
Authority
JP
Japan
Prior art keywords
audio signal
low frequency
frequency component
input audio
reference value
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
JP10317189U
Other languages
English (en)
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 filed Critical
Priority to JP10317189U priority Critical patent/JPH0344328U/ja
Publication of JPH0344328U publication Critical patent/JPH0344328U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Description

【図面の簡単な説明】
図は本考案のALC回路の一実施例を示したブ
ロツク図である。 1……ALCブロツク、2……時定数回路、3
……ローパスフイルタ、4……ピーク検波回路、
5……コンパレータ。

Claims (1)

    【実用新案登録請求の範囲】
  1. 入力音声信号が所定レベル以上になると前記入
    力音声信号のレベルを抑制するALC回路におい
    て、入力音声信号のレベルを抑制する期間を段階
    的又は連続的に可変する抑制期間可変手段と、前
    記入力音声信号から超低周波成分を抽出するフイ
    ルタ手段と、このフイルタ手段によつて抽出され
    た超低周波成分が基準値を超えたか否かを比較す
    る比較手段と、この比較手段によつて抽出された
    超低周波成分が前記基準値を超えた場合、前記抑
    制期間可変手段を制御して前記抑制期間を短くす
    る制御手段とを具備したことを特徴とするALC
    回路。
JP10317189U 1989-09-04 1989-09-04 Pending JPH0344328U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10317189U JPH0344328U (ja) 1989-09-04 1989-09-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10317189U JPH0344328U (ja) 1989-09-04 1989-09-04

Publications (1)

Publication Number Publication Date
JPH0344328U true JPH0344328U (ja) 1991-04-24

Family

ID=31652026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10317189U Pending JPH0344328U (ja) 1989-09-04 1989-09-04

Country Status (1)

Country Link
JP (1) JPH0344328U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011124661A (ja) * 2009-12-08 2011-06-23 Canon Inc 音声信号処理装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011124661A (ja) * 2009-12-08 2011-06-23 Canon Inc 音声信号処理装置

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