JPS6014539B2 - 雑音軽減符号化フイルタ装置 - Google Patents

雑音軽減符号化フイルタ装置

Info

Publication number
JPS6014539B2
JPS6014539B2 JP52094729A JP9472977A JPS6014539B2 JP S6014539 B2 JPS6014539 B2 JP S6014539B2 JP 52094729 A JP52094729 A JP 52094729A JP 9472977 A JP9472977 A JP 9472977A JP S6014539 B2 JPS6014539 B2 JP S6014539B2
Authority
JP
Japan
Prior art keywords
signal
filter
output
multiplier
input
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
JP52094729A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5358711A (en
Inventor
デビツド・イ−・ブラツクマ−
シ−・レネ・ジ−ガ−
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.)
Dbx Inc
Original Assignee
Dbx Inc
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 Dbx Inc filed Critical Dbx Inc
Publication of JPS5358711A publication Critical patent/JPS5358711A/ja
Publication of JPS6014539B2 publication Critical patent/JPS6014539B2/ja
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Networks Using Active Elements (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
JP52094729A 1976-11-08 1977-08-09 雑音軽減符号化フイルタ装置 Expired JPS6014539B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US739428 1976-11-08
US05/739,428 US4101849A (en) 1976-11-08 1976-11-08 Adaptive filter

Publications (2)

Publication Number Publication Date
JPS5358711A JPS5358711A (en) 1978-05-26
JPS6014539B2 true JPS6014539B2 (ja) 1985-04-13

Family

ID=24972266

Family Applications (2)

Application Number Title Priority Date Filing Date
JP52094729A Expired JPS6014539B2 (ja) 1976-11-08 1977-08-09 雑音軽減符号化フイルタ装置
JP58092216A Granted JPS5967737A (ja) 1976-11-08 1983-05-25 雑音軽減復号化フイルタ装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP58092216A Granted JPS5967737A (ja) 1976-11-08 1983-05-25 雑音軽減復号化フイルタ装置

Country Status (7)

Country Link
US (2) US4101849A (en, 2012)
JP (2) JPS6014539B2 (en, 2012)
AU (1) AU2722777A (en, 2012)
CA (1) CA1090707A (en, 2012)
DE (1) DE2749986A1 (en, 2012)
FR (1) FR2370392A1 (en, 2012)
GB (1) GB1589162A (en, 2012)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2810504A1 (de) * 1978-03-10 1979-09-13 Siemens Ag Schaltungsanordnung zur automatischen entzerrung eines signals
US4213466A (en) * 1978-08-11 1980-07-22 Harvard College, President And Fellows Monitoring myoelectric signals
US4215431A (en) * 1978-10-12 1980-07-29 John Nady Wireless transmission system
US4293937A (en) * 1979-08-10 1981-10-06 Sperry-Sun, Inc. Borehole acoustic telemetry system
US4430626A (en) 1979-11-28 1984-02-07 Dbx, Inc. Networks for the log domain
JPS56122243A (en) * 1980-02-29 1981-09-25 Victor Co Of Japan Ltd Noise reduction system
JPS5744338A (en) 1980-08-29 1982-03-12 Victor Co Of Japan Ltd Noise reduction device
JPS5746517A (en) * 1980-09-03 1982-03-17 Sony Corp Noise reduction circuit
US4449106A (en) * 1981-03-10 1984-05-15 Victor Company Of Japan, Ltd. Noise reducing apparatus
US4429309A (en) 1981-04-28 1984-01-31 Rca Corporation Tracking filter system for use with a FM/CW radar
JPS57194640A (en) * 1981-05-26 1982-11-30 Sony Corp Signal transmitting device
US4498055A (en) * 1981-09-10 1985-02-05 Dolby Ray Milton Circuit arrangements for modifying dynamic range
GB2111355B (en) * 1981-12-01 1985-02-13 Ray Milton Dolby Improvements in circuit arrangements for modifying dynamic range
US4507791A (en) * 1982-05-05 1985-03-26 Dolby Laboratories Licensing Corporation Analog and digital signal apparatus
US4609878A (en) * 1983-01-24 1986-09-02 Circuit Research Labs, Inc. Noise reduction system
US4539526A (en) * 1983-01-31 1985-09-03 Dbx, Inc. Adaptive signal weighting system
US4575810A (en) * 1983-03-11 1986-03-11 Siemens Gammasonics, Inc. Method and circuit for processing pulses by applying the technique of weighted acquisition
KR950015080B1 (ko) * 1983-10-07 1995-12-21 돌비 래브러토리즈 라이센싱 코포레이션 엠파시스 및 디엠파시스회로
US4700361A (en) * 1983-10-07 1987-10-13 Dolby Laboratories Licensing Corporation Spectral emphasis and de-emphasis
US4532849A (en) * 1983-12-15 1985-08-06 Drew Dennis M Signal shape controller
FR2558962B1 (fr) * 1984-01-27 1986-07-11 Commissariat Energie Atomique Appareil de mesure de courants faibles a grande dynamique
GB2160394B (en) * 1984-05-02 1988-03-16 Pioneer Electronic Corp Noise reduction system
US4701722A (en) * 1985-06-17 1987-10-20 Dolby Ray Milton Circuit arrangements for modifying dynamic range using series and parallel circuit techniques
US4696044A (en) * 1986-09-29 1987-09-22 Waller Jr James K Dynamic noise reduction with logarithmic control
US4815068A (en) * 1987-08-07 1989-03-21 Dolby Ray Milton Audio encoder for use with more than one decoder each having different characteristics
US4931977A (en) * 1987-10-30 1990-06-05 Canadian Marconi Company Vectorial adaptive filtering apparatus with convergence rate independent of signal parameters
US5023490A (en) * 1989-06-21 1991-06-11 General Electric Company Analog signal compression circuit
US6037993A (en) * 1997-03-17 2000-03-14 Antec Corporation Digital BTSC compander system
US6259482B1 (en) 1998-03-11 2001-07-10 Matthew F. Easley Digital BTSC compander system
US6556685B1 (en) * 1998-11-06 2003-04-29 Harman Music Group Companding noise reduction system with simultaneous encode and decode
US6493657B1 (en) * 1999-08-20 2002-12-10 Glp Partnership Amplitude range matching system
DE10116358A1 (de) * 2001-04-02 2002-11-07 Micronas Gmbh Vorrichtung und Verfahren zur Erfassung und Unterdrückung von Störungen
US7046750B1 (en) 2001-04-09 2006-05-16 Micronas Gmbh Adaptive signal weighting system
US6738700B2 (en) * 2002-03-20 2004-05-18 Delphi Technologies, Inc. Method for conforming a signal to a fault requirement using a command limiting scheme
US8797067B1 (en) * 2012-12-28 2014-08-05 Maxim Integrated Products, Inc. Detection of signals for transmission
US9641138B2 (en) * 2015-04-09 2017-05-02 Analog Devices, Inc. Multipath feedforward band pass amplifier

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931901A (en) * 1954-12-01 1960-04-05 Honeywell Regulator Co Nonlinear control apparatus
US3428791A (en) * 1963-04-24 1969-02-18 North American Rockwell Non-injection self-adaptive controller
US3355668A (en) * 1963-09-30 1967-11-28 Bendix Corp Tunable notch filter
US3518566A (en) * 1968-11-21 1970-06-30 Us Navy Audio system with modified output
BE753495A (fr) * 1969-07-21 1970-12-16 Dolby Laboratories Inc Filtres limiteurs perfectionnes pour systemes attenuateurs de bruit. (
US3678416A (en) * 1971-07-26 1972-07-18 Richard S Burwen Dynamic noise filter having means for varying cutoff point
GB1390341A (en) * 1971-03-12 1975-04-09 Dolby Laboratories Inc Signal compressors and expanders
US3681618A (en) * 1971-03-29 1972-08-01 David E Blackmer Rms circuits with bipolar logarithmic converter
US3789143A (en) * 1971-03-29 1974-01-29 D Blackmer Compander with control signal logarithmically related to the instantaneous rms value of the input signal
GB1401336A (en) * 1971-10-05 1975-07-16 Victor Company Of Japan Expander circuit for a compression and expansion system
GB1385493A (en) * 1971-11-19 1975-02-26 Secr Defence Speech communication system
US3735290A (en) * 1972-04-18 1973-05-22 Victor Company Of Japan Compressing and/or expanding system comprising fixed and variable frequency characteristic changing circuits
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

Also Published As

Publication number Publication date
AU2722777A (en) 1979-01-25
FR2370392A1 (fr) 1978-06-02
FR2370392B1 (en, 2012) 1984-06-29
GB1589162A (en) 1981-05-07
DE2749986C2 (en, 2012) 1988-11-17
JPS5358711A (en) 1978-05-26
US4136314A (en) 1979-01-23
US4101849A (en) 1978-07-18
JPS5967737A (ja) 1984-04-17
CA1090707A (en) 1980-12-02
DE2749986A1 (de) 1978-05-11
JPS613136B2 (en, 2012) 1986-01-30

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