SE404862B - Anleggning for kompression och expansion av signaler - Google Patents

Anleggning for kompression och expansion av signaler

Info

Publication number
SE404862B
SE404862B SE7305908A SE7305908A SE404862B SE 404862 B SE404862 B SE 404862B SE 7305908 A SE7305908 A SE 7305908A SE 7305908 A SE7305908 A SE 7305908A SE 404862 B SE404862 B SE 404862B
Authority
SE
Sweden
Prior art keywords
expansion
compression
signals
Prior art date
Application number
SE7305908A
Other languages
English (en)
Swedish (sv)
Inventor
R M Dolby
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 SE404862B publication Critical patent/SE404862B/xx

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)
SE7305908A 1972-05-02 1973-04-26 Anleggning for kompression och expansion av signaler SE404862B (sv)

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 (1)

Publication Number Publication Date
SE404862B true SE404862B (sv) 1978-10-30

Family

ID=10145451

Family Applications (3)

Application Number Title Priority Date Filing Date
SE7305908A SE404862B (sv) 1972-05-02 1973-04-26 Anleggning for kompression och expansion av signaler
SE7602316A SE409069B (sv) 1972-05-02 1976-02-25 Kopplingsanordning for modifiering av en insignals dynamikomrade
SE7602315A SE414102B (sv) 1972-05-02 1976-02-25 Anleggning for brusreducering

Family Applications After (2)

Application Number Title Priority Date Filing Date
SE7602316A SE409069B (sv) 1972-05-02 1976-02-25 Kopplingsanordning for modifiering av en insignals dynamikomrade
SE7602315A SE414102B (sv) 1972-05-02 1976-02-25 Anleggning for brusreducering

Country Status (11)

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

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1000617A (en) * 1973-05-17 1976-11-30 Ray M. Dolby Compressors, expanders and noise reduction systems
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
BE889426A (fr) * 1980-06-30 1981-10-16 Dolby Ray Milton Circuit de reduction des effets de la surcharge d'un support d'enregistrement ou de transmission de signaux
DK168806B1 (da) * 1980-06-30 1994-06-13 Ray Milton Dolby Kredsløbsarrangement til modifikation af dynamikområde
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 (da) * 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
EP2232700B1 (en) 2007-12-21 2014-08-13 Dts Llc 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
CN109416330B (zh) 2016-07-16 2022-09-27 株式会社理学 混合检查系统
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 (da) * 1968-01-10 1971-11-10
US3631365A (en) * 1968-11-01 1971-12-28 Dolby Laboratories Inc Signal compressors and expanders
BE753495A (fr) * 1969-07-21 1970-12-16 Dolby Laboratories Inc Filtres limiteurs perfectionnes pour systemes attenuateurs de bruit. (
US3729693A (en) * 1971-08-02 1973-04-24 R Dolby Compressor/expander switching methods and apparatus

Also Published As

Publication number Publication date
CH559473A5 (da) 1975-02-28
CA988432A (en) 1976-05-04
NL7306131A (da) 1973-11-06
AT358099B (de) 1980-08-25
ATA385973A (de) 1980-01-15
SE409069B (sv) 1979-07-23
GB1432763A (en) 1976-04-22
SE7602315L (sv) 1976-02-25
DE2321686C2 (de) 1982-12-30
DE2321686A1 (de) 1973-11-08
JPS57685B2 (da) 1982-01-07
SE414102B (sv) 1980-07-07
IT1030662B (it) 1979-04-10
NL186989B (nl) 1990-11-16
SE7602316L (sv) 1976-02-25
FR2183155B1 (da) 1977-09-02
JPS4956562A (da) 1974-06-01
US3828280A (en) 1974-08-06
FR2183155A1 (da) 1973-12-14
NL186989C (nl) 1991-04-16

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