JPS4825425A - - Google Patents

Info

Publication number
JPS4825425A
JPS4825425A JP47076986A JP7698672A JPS4825425A JP S4825425 A JPS4825425 A JP S4825425A JP 47076986 A JP47076986 A JP 47076986A JP 7698672 A JP7698672 A JP 7698672A JP S4825425 A JPS4825425 A JP S4825425A
Authority
JP
Japan
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
JP47076986A
Other languages
Japanese (ja)
Other versions
JPS5737134B2 (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
Publication of JPS4825425A publication Critical patent/JPS4825425A/ja
Publication of JPS5737134B2 publication Critical patent/JPS5737134B2/ja
Expired 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H04B1/64—Volume compression or expansion arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
JP7698672A 1971-08-02 1972-08-02 Expired JPS5737134B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16806971A 1971-08-02 1971-08-02

Publications (2)

Publication Number Publication Date
JPS4825425A true JPS4825425A (en) 1973-04-03
JPS5737134B2 JPS5737134B2 (en) 1982-08-07

Family

ID=22609984

Family Applications (4)

Application Number Title Priority Date Filing Date
JP7698772A Expired JPS5737135B2 (en) 1971-08-02 1972-08-02
JP7698572A Expired JPS5625824B2 (en) 1971-08-02 1972-08-02
JP7698672A Expired JPS5737134B2 (en) 1971-08-02 1972-08-02
JP7698872A Expired JPS53888B2 (en) 1971-08-02 1972-08-02

Family Applications Before (2)

Application Number Title Priority Date Filing Date
JP7698772A Expired JPS5737135B2 (en) 1971-08-02 1972-08-02
JP7698572A Expired JPS5625824B2 (en) 1971-08-02 1972-08-02

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP7698872A Expired JPS53888B2 (en) 1971-08-02 1972-08-02

Country Status (4)

Country Link
US (1) US3729693A (en)
JP (4) JPS5737135B2 (en)
DE (4) DE2237541C2 (en)
GB (4) GB1404332A (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972010A (en) * 1968-01-10 1976-07-27 Ray Milton Dolby Compressors, expanders and noise reduction systems
US3903485A (en) * 1968-01-10 1975-09-02 Ray Milton Dolby Compressors, expanders and noise reduction systems
GB1432763A (en) * 1972-05-02 1976-04-22 Dolby Laboratories Inc Compressors expanders and noise reduction systems
JPS572970B2 (en) * 1973-09-10 1982-01-19
US4045731A (en) * 1974-11-21 1977-08-30 Takeda Riken Kogyo Kabushikikaisha Filter having an automatically controlled variable cut-off frequency
JPS51118718U (en) * 1975-03-19 1976-09-27
US4155041A (en) 1976-05-13 1979-05-15 Burns Richard C System for reducing noise transients
GB1579138A (en) * 1976-07-06 1980-11-12 Sony Corp Noise and cross-talk elimination in recording and reproducing video signals
JPS5313860A (en) * 1976-07-23 1978-02-07 Pioneer Electronic Corp Tone control device
US4068139A (en) * 1976-08-09 1978-01-10 Fairchild Camera And Instrument Corporation IC compatible variable shunt impedance for Dolby B system
JPS5329007A (en) * 1976-08-30 1978-03-17 Victor Co Of Japan Ltd Signal transmitter
JPS5373020A (en) * 1976-12-13 1978-06-29 Victor Co Of Japan Ltd Signal transmission device
JPS53121506A (en) * 1977-03-31 1978-10-24 Pioneer Electronic Corp Signal compressing and expanding device
JPS5439516A (en) * 1977-09-02 1979-03-27 Sanyo Electric Co Ltd Noise reduction unit
US4328465A (en) * 1978-09-26 1982-05-04 Pioneer Electronic Corporation Tone control circuit utilizing variable gain amplifier
JPS55121698U (en) * 1979-02-21 1980-08-29
JPS55156431A (en) * 1979-05-24 1980-12-05 Sony Corp Noise reduction system
JPS55158715A (en) * 1979-05-29 1980-12-10 Sony Corp Gain control circuit
DE3102945A1 (en) * 1980-05-19 1981-12-24 Hitachi, Ltd., Tokyo SWITCHABLE SIGNAL COMPRESSOR / SIGNAL EXTENDER
US4457014A (en) * 1980-10-03 1984-06-26 Metme Communications Signal transfer and system utilizing transmission lines
JPS57142013A (en) * 1981-02-27 1982-09-02 Sony Corp Active equalizer
DE3152946T1 (en) * 1981-08-26 1983-12-01 Bloy, Graham Philip SYSTEM FOR TRANSMITTING MODULATED SIGNALS USING PERFORMANCE SYSTEMS WITH MAXIMUM EFFICIENCY
JPS57117111A (en) * 1981-11-20 1982-07-21 Matsushita Electric Ind Co Ltd Tape recorder
DE3249333T (en) * 1982-01-26 1984-01-12 Coghill, Marvin, Bangkok System for maximum effective transmission of modulated energy
JPS58209234A (en) * 1982-05-29 1983-12-06 Sony Corp Noise reduction circuit
JPS5933113U (en) * 1982-08-23 1984-03-01 株式会社東芝 Tape recorder switching device
JPS5995414U (en) * 1982-12-17 1984-06-28 株式会社日立製作所 Tape recorder with noise reduction circuit
JPS6062639U (en) * 1983-10-05 1985-05-01 カヤバ工業株式会社 Hydraulic shock absorber mounting device
US4747141A (en) * 1983-10-24 1988-05-24 Kahn Leonard R AM stereo signal decoder
JPH0725854B2 (en) * 1984-05-18 1995-03-22 帝国化学産業株式会社 Water-solubilization method of polyamide resin
DE3543907A1 (en) * 1985-12-12 1987-06-25 Stefan Knauer Device for noise suppression in the transmission of audio-frequency signals
JPH0244113Y2 (en) * 1987-03-26 1990-11-22
JPS6421833U (en) * 1987-07-29 1989-02-03
EP0356885A3 (en) * 1988-08-23 1991-05-15 B.W.N. Wavepur Rights Company Frequency-compensated linear sliding band network

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH447890A (en) * 1965-07-09 1967-11-30 Dowty Electrics Ltd Electrically controlled indicator
GB1120541A (en) * 1965-08-11 1968-07-17 Dolby Ray Milton Improvements in noise reduction systems
GB1253031A (en) * 1968-01-10 1971-11-10
US3631365A (en) * 1968-11-01 1971-12-28 Dolby Laboratories Inc Signal compressors and expanders

Also Published As

Publication number Publication date
DE2237541C2 (en) 1982-08-05
JPS5737135B2 (en) 1982-08-07
JPS4825424A (en) 1973-04-03
DE2237543A1 (en) 1973-02-22
DE2237540A1 (en) 1973-02-22
DE2237542C2 (en) 1982-04-29
JPS4825426A (en) 1973-04-03
DE2237543B2 (en) 1977-12-08
GB1404332A (en) 1975-08-28
GB1404333A (en) 1975-08-28
DE2237542A1 (en) 1973-02-22
JPS53888B2 (en) 1978-01-12
DE2237540C2 (en) 1982-07-15
GB1404334A (en) 1975-08-28
JPS5737134B2 (en) 1982-08-07
GB1404331A (en) 1975-08-28
JPS5625824B2 (en) 1981-06-15
JPS4825427A (en) 1973-04-03
DE2237541A1 (en) 1973-02-22
US3729693A (en) 1973-04-24

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