JPH0263467U - - Google Patents

Info

Publication number
JPH0263467U
JPH0263467U JP1988142275U JP14227588U JPH0263467U JP H0263467 U JPH0263467 U JP H0263467U JP 1988142275 U JP1988142275 U JP 1988142275U JP 14227588 U JP14227588 U JP 14227588U JP H0263467 U JPH0263467 U JP H0263467U
Authority
JP
Japan
Prior art keywords
resistor
signals
band frequency
reset
frequency signals
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
JP1988142275U
Other languages
English (en)
Other versions
JPH0611478Y2 (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 JP1988142275U priority Critical patent/JPH0611478Y2/ja
Priority to US07/363,768 priority patent/US4983919A/en
Priority to DE89306246T priority patent/DE68908841T2/de
Priority to EP89306246A priority patent/EP0367374B1/en
Publication of JPH0263467U publication Critical patent/JPH0263467U/ja
Application granted granted Critical
Publication of JPH0611478Y2 publication Critical patent/JPH0611478Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/18—Spectrum analysis; Fourier analysis with provision for recording frequency spectrum

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す回路図、第２
図は第１図の回路動作を説明するための各部波形
図である。 主要部分の符号の説明、２……入力回路、４…
…コントローラ、５１〜５ｎ……バンドパスフイ
ルタ、６１〜６ｎ……検波器、７……中継スイツ
チ回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 左右チヤンネルのオーデイオ信号を所定周
    期毎に一定期間をおいて交互に取り込む入力手段
    と、取り込んだオーデイオ信号を複数の帯域周波
    数信号に分割する周波数分析手段と、前記複数の
    帯域周波数信号をそれぞれ検波する検波手段と、
    前記一定期間において前記検波手段の出力端を接
    地するリセツト手段と、前記複数の帯域周波数信
    号の各検波出力のうちの１を順次切換え中継する
    中継スイツチ手段とを備え、前記周波数分析手段
    は、前記複数の帯域周波数信号の各々に対応して
    設けられた複数のバンドパスフイルタと、前記リ
    セツト手段のリセツトタイミングに同期して前記
    バンドパスフイルタの少なくとも１の利得を０に
    すべく制御する制御手段とからなることを特徴と
    する周波数特性検出装置。 (2) 前記バンドパスフイルタは、非反転入力端
    が接地されたオペアンプと、取り込まれたオーデ
    イオ信号が一端に印加される第１の抵抗と、この
    第１の抵抗の他端に一端が共通接続されかつ他端
    が前記オペアンプの出力端及び反転入力端にそれ
    ぞれ接続された第１及び第２のコンデンサと、こ
    の第１及び第２のコンデンサの他端側に接続され
    た第２の抵抗とからなり、前記制御手段は前記第
    ２の抵抗を短絡する手段であることを特徴とする
    請求項１記載の周波数特性検出装置。
JP1988142275U 1988-10-31 1988-10-31 周波数特性検出装置 Expired - Lifetime JPH0611478Y2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1988142275U JPH0611478Y2 (ja) 1988-10-31 1988-10-31 周波数特性検出装置
US07/363,768 US4983919A (en) 1988-10-31 1989-06-09 Frequency response detection apparatus
DE89306246T DE68908841T2 (de) 1988-10-31 1989-06-20 Gerät zur Feststellung des Frequenzinhaltes von Audiosignalen.
EP89306246A EP0367374B1 (en) 1988-10-31 1989-06-20 Frequency response detection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988142275U JPH0611478Y2 (ja) 1988-10-31 1988-10-31 周波数特性検出装置

Publications (2)

Publication Number Publication Date
JPH0263467U true JPH0263467U (ja) 1990-05-11
JPH0611478Y2 JPH0611478Y2 (ja) 1994-03-23

Family

ID=15311569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988142275U Expired - Lifetime JPH0611478Y2 (ja) 1988-10-31 1988-10-31 周波数特性検出装置

Country Status (4)

Country Link
US (1) US4983919A (ja)
EP (1) EP0367374B1 (ja)
JP (1) JPH0611478Y2 (ja)
DE (1) DE68908841T2 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5443943A (en) * 1993-03-22 1995-08-22 Eastman Kodak Company Method of processing originating photographic elements containing tabular silver chloride grains bounded by {100} faces

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5530888U (ja) * 1978-08-21 1980-02-28
US4492917A (en) * 1981-09-03 1985-01-08 Victor Company Of Japan, Ltd. Display device for displaying audio signal levels and characters
US4665494A (en) * 1982-12-17 1987-05-12 Victor Company Of Japan, Limited Spectrum display device for audio signals
US4802225A (en) * 1985-01-02 1989-01-31 Medical Research Council Analysis of non-sinusoidal waveforms
US4829570A (en) * 1987-05-22 1989-05-09 Recoton Corporation Wireless remote speaker system

Also Published As

Publication number Publication date
EP0367374A1 (en) 1990-05-09
EP0367374B1 (en) 1993-09-01
DE68908841T2 (de) 1994-01-13
US4983919A (en) 1991-01-08
JPH0611478Y2 (ja) 1994-03-23
DE68908841D1 (de) 1993-10-07

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