JPS6440938U - - Google Patents

Info

Publication number
JPS6440938U
JPS6440938U JP1987136563U JP13656387U JPS6440938U JP S6440938 U JPS6440938 U JP S6440938U JP 1987136563 U JP1987136563 U JP 1987136563U JP 13656387 U JP13656387 U JP 13656387U JP S6440938 U JPS6440938 U JP S6440938U
Authority
JP
Japan
Prior art keywords
input level
changes
level
detection circuit
cutoff frequency
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.)
Granted
Application number
JP1987136563U
Other languages
English (en)
Other versions
JPH0424670Y2 (ja
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 JP1987136563U priority Critical patent/JPH0424670Y2/ja
Publication of JPS6440938U publication Critical patent/JPS6440938U/ja
Application granted granted Critical
Publication of JPH0424670Y2 publication Critical patent/JPH0424670Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Noise Elimination (AREA)
  • Stereo-Broadcasting Methods (AREA)

Description

【図面の簡単な説明】
第１図は本考案にかかるＦＭステレオ受信機の
ブロツク図、第２図はノイズリダクシヨン回路の
ブロツク図、第３図及び第４図はノイズリダクシ
ヨン回路の総合特性（オーデイオ入力レベル・カ
ツトオフ周波数特性）である。 １２……フロントエンド、１５……可変減衰器
、１６……ステレオ復調回路、１７……セパレー
シヨンコントロール回路、１８……ノイズリダク
シヨン回路、１９……レベル検出回路、２０〜２
２……レベル設定回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. アンテナ入力レベルを検出するレベル検出回路
    と、オーデイオ入力レベルに応じてローパスフイ
    ルタのカツトオフ周波数を変化すると共に、前記
    アンテナ入力レベルに応じて該オーデイオ入力レ
    ベル・カツトオフ周波数特性を変化させてオーデ
    イオ信号に対する周波数帯域幅を変化するノイズ
    リダクシヨン回路を有することを特徴とするＦＭ
    ステレオ受信機。
JP1987136563U 1987-09-07 1987-09-07 Expired JPH0424670Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987136563U JPH0424670Y2 (ja) 1987-09-07 1987-09-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987136563U JPH0424670Y2 (ja) 1987-09-07 1987-09-07

Publications (2)

Publication Number Publication Date
JPS6440938U true JPS6440938U (ja) 1989-03-10
JPH0424670Y2 JPH0424670Y2 (ja) 1992-06-11

Family

ID=31397190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987136563U Expired JPH0424670Y2 (ja) 1987-09-07 1987-09-07

Country Status (1)

Country Link
JP (1) JPH0424670Y2 (ja)

Also Published As

Publication number Publication date
JPH0424670Y2 (ja) 1992-06-11

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