JPS6136304B2 - - Google Patents

Info

Publication number
JPS6136304B2
JPS6136304B2 JP53116828A JP11682878A JPS6136304B2 JP S6136304 B2 JPS6136304 B2 JP S6136304B2 JP 53116828 A JP53116828 A JP 53116828A JP 11682878 A JP11682878 A JP 11682878A JP S6136304 B2 JPS6136304 B2 JP S6136304B2
Authority
JP
Japan
Prior art keywords
signal
frequency
audio
low
level
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.)
Expired
Application number
JP53116828A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5545112A (en
Inventor
Shoichi Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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 by Sony Corp filed Critical Sony Corp
Priority to JP11682878A priority Critical patent/JPS5545112A/ja
Priority to CA336,032A priority patent/CA1131355A/en
Priority to US06/077,179 priority patent/US4306201A/en
Priority to NL7907014A priority patent/NL7907014A/nl
Priority to GB7932846A priority patent/GB2032230B/en
Priority to DE19792938378 priority patent/DE2938378A1/de
Priority to FR7923728A priority patent/FR2437118B1/fr
Publication of JPS5545112A publication Critical patent/JPS5545112A/ja
Publication of JPS6136304B2 publication Critical patent/JPS6136304B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/18—Automatic control in untuned amplifiers
    • H03G5/22—Automatic control in untuned amplifiers having semiconductor devices

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Networks Using Active Elements (AREA)
JP11682878A 1978-09-22 1978-09-22 Signal transmitter Granted JPS5545112A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP11682878A JPS5545112A (en) 1978-09-22 1978-09-22 Signal transmitter
CA336,032A CA1131355A (en) 1978-09-22 1979-09-20 Signal processing circuit
US06/077,179 US4306201A (en) 1978-09-22 1979-09-20 Signal processing circuit
NL7907014A NL7907014A (nl) 1978-09-22 1979-09-20 Ruisonderdrukkingsschakeling.
GB7932846A GB2032230B (en) 1978-09-22 1979-09-21 Signal processing circuits
DE19792938378 DE2938378A1 (de) 1978-09-22 1979-09-22 Signalverarbeitungskreis
FR7923728A FR2437118B1 (fr) 1978-09-22 1979-09-24 Circuit de traitement de signaux d'enregistrement et de reproduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11682878A JPS5545112A (en) 1978-09-22 1978-09-22 Signal transmitter

Publications (2)

Publication Number Publication Date
JPS5545112A JPS5545112A (en) 1980-03-29
JPS6136304B2 true JPS6136304B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1986-08-18

Family

ID=14696623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11682878A Granted JPS5545112A (en) 1978-09-22 1978-09-22 Signal transmitter

Country Status (7)

Country Link
US (1) US4306201A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5545112A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1131355A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2938378A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2437118B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2032230B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL7907014A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0583492B1 (en) * 1992-07-31 1998-11-25 Aphex Systems, Ltd. Audio signal bass frequency enhancement device
JP3616878B2 (ja) * 2002-01-17 2005-02-02 オンキヨー株式会社 低域通過フィルタ
US8885275B1 (en) * 2013-12-18 2014-11-11 HGST Netherlands B.V. System and method for ATI/FTI detection in magnetic media
US9218847B2 (en) * 2013-12-18 2015-12-22 HGST Netherlands B.V. System and method for testing data storage systems utilizing micro-transitions

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE232937C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) *
GB479070A (en) 1936-08-06 1938-01-31 Electrical Res Prod Inc Improvements in or relating to multiple track sound-film recording
US2395159A (en) * 1942-06-29 1946-02-19 Rca Corp Electrical compressor method and system
GB1120541A (en) 1965-08-11 1968-07-17 Dolby Ray Milton Improvements in noise reduction systems
GB1115015A (en) * 1966-03-01 1968-05-22 Rank Organisation Ltd Improvements in or relating to automatic bandwidth adjustment of an audio frequency signal
US3665345A (en) * 1969-07-21 1972-05-23 Dolby Laboratories Inc Compressors and expanders for noise reduction systems
FI57502C (fi) * 1971-04-06 1980-08-11 Victor Company Of Japan Kompressions- och expansionssystem
JPS5648883B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-07-24 1981-11-18
JPS574492Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-05-13 1982-01-27
JPS5024112U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-06-28 1975-03-18
NO142768C (no) 1974-01-26 1980-10-08 Licentia Gmbh Kopling for automatisk dynamikk-kompresjon eller -ekspansjon
JPS51127608A (en) * 1975-04-30 1976-11-06 Victor Co Of Japan Ltd Signal transmitting unit
JPS52142409A (en) * 1976-05-21 1977-11-28 Toshiba Corp Noise reduction system
JPS5912746Y2 (ja) * 1976-10-30 1984-04-17 赤井電機株式会社 テ−プレコ−ダ等におけるノイズ低減装置
JPS5439516A (en) 1977-09-02 1979-03-27 Sanyo Electric Co Ltd Noise reduction unit

Also Published As

Publication number Publication date
CA1131355A (en) 1982-09-07
GB2032230B (en) 1982-10-13
DE2938378A1 (de) 1980-04-03
NL7907014A (nl) 1980-03-25
GB2032230A (en) 1980-04-30
FR2437118A1 (fr) 1980-04-18
JPS5545112A (en) 1980-03-29
FR2437118B1 (fr) 1985-06-28
US4306201A (en) 1981-12-15

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