JPH02108425U - - Google Patents

Info

Publication number
JPH02108425U
JPH02108425U JP1746889U JP1746889U JPH02108425U JP H02108425 U JPH02108425 U JP H02108425U JP 1746889 U JP1746889 U JP 1746889U JP 1746889 U JP1746889 U JP 1746889U JP H02108425 U JPH02108425 U JP H02108425U
Authority
JP
Japan
Prior art keywords
low
sensor
level
output
audio 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
Application number
JP1746889U
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 JP1746889U priority Critical patent/JPH02108425U/ja
Publication of JPH02108425U publication Critical patent/JPH02108425U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例のブロツク図である
。 1……チユーナ部、2……電子ボリユーム、3
……低周波増幅部、4……増幅部、5……マイク
ロホン、6……イヤホン、7……可変抵抗。

Claims (1)

    【実用新案登録請求の範囲】
  1. 設置場所の周囲の騒音の大きさを検出するセン
    サと、該センサの出力に応じて音声信号発生源か
    らの音声信号の大きさを抑制する電子ボリユーム
    と、該電子ボリユームの出力を増幅して受話器に
    供給する低周波増幅部とを含むことを特徴とする
    自動音量調節回路。
JP1746889U 1989-02-17 1989-02-17 Pending JPH02108425U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1746889U JPH02108425U (ja) 1989-02-17 1989-02-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1746889U JPH02108425U (ja) 1989-02-17 1989-02-17

Publications (1)

Publication Number Publication Date
JPH02108425U true JPH02108425U (ja) 1990-08-29

Family

ID=31231277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1746889U Pending JPH02108425U (ja) 1989-02-17 1989-02-17

Country Status (1)

Country Link
JP (1) JPH02108425U (ja)

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