AT358099B - Signalkompressor oder - expander - Google Patents

Signalkompressor oder - expander

Info

Publication number
AT358099B
AT358099B AT385973A AT385973A AT358099B AT 358099 B AT358099 B AT 358099B AT 385973 A AT385973 A AT 385973A AT 385973 A AT385973 A AT 385973A AT 358099 B AT358099 B AT 358099B
Authority
AT
Austria
Prior art keywords
expander
signal compressor
compressor
signal
Prior art date
Application number
AT385973A
Other languages
English (en)
Other versions
ATA385973A (de
Original Assignee
Dolby Laboratories 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 Dolby Laboratories Inc filed Critical Dolby Laboratories Inc
Publication of ATA385973A publication Critical patent/ATA385973A/de
Application granted granted Critical
Publication of AT358099B publication Critical patent/AT358099B/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/0405—Non-linear filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • 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
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
AT385973A 1972-05-02 1973-05-02 Signalkompressor oder - expander AT358099B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2040672A GB1432763A (en) 1972-05-02 1972-05-02 Compressors expanders and noise reduction systems

Publications (2)

Publication Number Publication Date
ATA385973A ATA385973A (de) 1980-01-15
AT358099B true AT358099B (de) 1980-08-25

Family

ID=10145451

Family Applications (1)

Application Number Title Priority Date Filing Date
AT385973A AT358099B (de) 1972-05-02 1973-05-02 Signalkompressor oder - expander

Country Status (11)

Country Link
US (1) US3828280A (de)
JP (1) JPS57685B2 (de)
AT (1) AT358099B (de)
CA (1) CA988432A (de)
CH (1) CH559473A5 (de)
DE (1) DE2321686C2 (de)
FR (1) FR2183155B1 (de)
GB (1) GB1432763A (de)
IT (1) IT1030662B (de)
NL (1) NL186989C (de)
SE (3) SE404862B (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909733A (en) * 1973-05-17 1975-09-30 Dolby Laboratories Inc Dynamic range modifying circuits utilizing variable negative resistance
JPS519805A (ja) * 1974-07-15 1976-01-26 Sanyo Electric Co Zatsuonteigenkairo
US4155041A (en) 1976-05-13 1979-05-15 Burns Richard C System for reducing noise transients
JPS5918723Y2 (ja) * 1976-10-26 1984-05-30 株式会社東芝 雑音低減装置における信号レベル表示装置
US4142211A (en) * 1977-11-23 1979-02-27 Microtime, Inc. Bidimensional noise reduction system for television
FR2435156A1 (fr) * 1978-08-31 1980-03-28 Izakson Ilya Filtre adaptatif
JPS55156431A (en) * 1979-05-24 1980-12-05 Sony Corp Noise reduction system
SE422369B (sv) * 1979-08-03 1982-03-01 Arvid Lundbeck Anordning for kompensering av overforingsfunktion
JPS56106433A (en) * 1980-01-28 1981-08-24 Sony Corp Noise reducing circuit
JPS56157112A (en) * 1980-05-08 1981-12-04 Pioneer Electronic Corp Compressing and expanding circuit for signal
DK156356C (da) * 1980-06-30 1989-12-27 Ray Milton Dolby Kredsloeb til reduktion af overbelastningseffekter i signalindspilnings-og transmissionssystemer
BE889428A (fr) * 1980-06-30 1981-10-16 Dolby Ray Milton Dispositif destine a modifier la plage dynamique de signaux d'entree
GB2111356B (en) * 1981-12-01 1985-03-20 Ray Milton Dolby Improvements in circuit arrangements for modifying dynamic range
CA1188384A (en) * 1981-12-29 1985-06-04 Masayuki Katakura Noise reduction circuit
JPH0320796Y2 (de) * 1985-07-18 1991-05-07
US4737735A (en) * 1986-07-25 1988-04-12 Kampes Donald P Phantom powered amplifier
US4944024A (en) * 1989-02-02 1990-07-24 Amaf Industries, Inc. Method and apparatus for reducing noise in a linked compressor-expander telecommunications system
US5278912A (en) * 1991-06-28 1994-01-11 Resound Corporation Multiband programmable compression system
WO2009086174A1 (en) 2007-12-21 2009-07-09 Srs Labs, Inc. System for adjusting perceived loudness of audio signals
US8538042B2 (en) 2009-08-11 2013-09-17 Dts Llc System for increasing perceived loudness of speakers
US9312829B2 (en) 2012-04-12 2016-04-12 Dts Llc System for adjusting loudness of audio signals in real time
TWI749029B (zh) 2016-07-16 2021-12-11 日商理學股份有限公司 複合檢查系統
US11990380B2 (en) * 2019-04-19 2024-05-21 Kla Corporation Methods and systems for combining x-ray metrology data sets to improve parameter estimation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2193966A (en) * 1936-08-05 1940-03-19 Jones Cyril Edward Palmer Volume range controlling arrangement employing thermionic amplifiers
GB1253031A (de) * 1968-01-10 1971-11-10
US3631365A (en) * 1968-11-01 1971-12-28 Dolby Laboratories Inc Signal compressors and expanders
US3665345A (en) * 1969-07-21 1972-05-23 Dolby Laboratories Inc Compressors and expanders for noise reduction systems
US3729693A (en) * 1971-08-02 1973-04-24 R Dolby Compressor/expander switching methods and apparatus

Also Published As

Publication number Publication date
GB1432763A (en) 1976-04-22
ATA385973A (de) 1980-01-15
FR2183155A1 (de) 1973-12-14
IT1030662B (it) 1979-04-10
SE404862B (sv) 1978-10-30
SE7602315L (sv) 1976-02-25
DE2321686A1 (de) 1973-11-08
FR2183155B1 (de) 1977-09-02
SE7602316L (sv) 1976-02-25
SE409069B (sv) 1979-07-23
NL186989C (nl) 1991-04-16
CA988432A (en) 1976-05-04
NL186989B (nl) 1990-11-16
DE2321686C2 (de) 1982-12-30
JPS4956562A (de) 1974-06-01
CH559473A5 (de) 1975-02-28
NL7306131A (de) 1973-11-06
JPS57685B2 (de) 1982-01-07
SE414102B (sv) 1980-07-07
US3828280A (en) 1974-08-06

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Legal Events

Date Code Title Description
EFA Change in the company name
ELJ Ceased due to non-payment of the annual fee
ELA Expired due to lapse of time