CH656996A5 - Schaltungsanordnung zum modifizieren des dynamikbereichs. - Google Patents

Schaltungsanordnung zum modifizieren des dynamikbereichs. Download PDF

Info

Publication number
CH656996A5
CH656996A5 CH8223/81A CH822381A CH656996A5 CH 656996 A5 CH656996 A5 CH 656996A5 CH 8223/81 A CH8223/81 A CH 8223/81A CH 822381 A CH822381 A CH 822381A CH 656996 A5 CH656996 A5 CH 656996A5
Authority
CH
Switzerland
Prior art keywords
signal
circuit
signals
band
frequency
Prior art date
Application number
CH8223/81A
Other languages
German (de)
English (en)
Inventor
Ray Milton Dolby
Original Assignee
Ray Milton Dolby
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
Priority claimed from US06/325,530 external-priority patent/US4498055A/en
Application filed by Ray Milton Dolby filed Critical Ray Milton Dolby
Publication of CH656996A5 publication Critical patent/CH656996A5/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
    • H03G7/08—Volume compression or expansion in amplifiers having semiconductor devices incorporating negative feedback
    • 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
    • H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
    • H03G9/18—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for tone control and volume expansion or compression
    • 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

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
CH8223/81A 1981-12-01 1981-12-22 Schaltungsanordnung zum modifizieren des dynamikbereichs. CH656996A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/325,530 US4498055A (en) 1981-09-10 1981-12-01 Circuit arrangements for modifying dynamic range

Publications (1)

Publication Number Publication Date
CH656996A5 true CH656996A5 (de) 1986-07-31

Family

ID=23268273

Family Applications (1)

Application Number Title Priority Date Filing Date
CH8223/81A CH656996A5 (de) 1981-12-01 1981-12-22 Schaltungsanordnung zum modifizieren des dynamikbereichs.

Country Status (15)

Country Link
KR (1) KR900000483B1 (it)
BE (1) BE901906Q (it)
CA (1) CA1188996A (it)
CH (1) CH656996A5 (it)
DE (1) DE3151137A1 (it)
DK (1) DK575681A (it)
ES (1) ES8303848A1 (it)
FR (1) FR2517496B1 (it)
GB (1) GB2111355B (it)
GR (1) GR77317B (it)
IE (1) IE52495B1 (it)
IT (1) IT1140402B (it)
LU (1) LU83854A1 (it)
NL (1) NL192860C (it)
SE (1) SE449281B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4922535A (en) * 1986-03-03 1990-05-01 Dolby Ray Milton Transient control aspects of circuit arrangements for altering the dynamic range of audio signals
JP2764205B2 (ja) * 1986-03-03 1998-06-11 レ−・ミルトン・ドルビ ブートストラップ信号減衰回路
CA1269138A (en) * 1986-03-03 1990-05-15 Ray Milton Dolby Attenuator circuit employing bootstrapping
GB2429779A (en) * 2005-09-01 2007-03-07 Geo Kingsbury Machine Tools Lt Testing components of drive trains

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1120541A (en) * 1965-08-11 1968-07-17 Dolby Ray Milton Improvements in noise reduction systems
US3665345A (en) * 1969-07-21 1972-05-23 Dolby Laboratories Inc Compressors and expanders for noise reduction systems
GB1367002A (en) * 1971-04-06 1974-09-18 Victor Company Of Japan Compression and/or expansion system and circuit
US4101849A (en) * 1976-11-08 1978-07-18 Dbx, Inc. Adaptive filter
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

Also Published As

Publication number Publication date
DE3151137C2 (it) 1993-04-01
IE52495B1 (en) 1987-11-25
NL192860C (nl) 1998-03-04
NL8105775A (nl) 1983-07-01
FR2517496B1 (fr) 1985-11-15
LU83854A1 (fr) 1982-05-07
CA1188996A (en) 1985-06-18
FR2517496A1 (fr) 1983-06-03
KR830008462A (ko) 1983-11-18
SE449281B (sv) 1987-04-13
ES508394A0 (es) 1983-02-01
IE812951L (en) 1983-06-01
ES8303848A1 (es) 1983-02-01
SE8107495L (sv) 1983-06-02
DK575681A (da) 1983-06-02
GB2111355A (en) 1983-06-29
GB2111355B (en) 1985-02-13
NL192860B (nl) 1997-11-03
GR77317B (it) 1984-09-11
IT8125877A0 (it) 1981-12-29
BE901906Q (fr) 1985-07-01
KR900000483B1 (ko) 1990-01-30
DE3151137A1 (de) 1983-07-14
IT1140402B (it) 1986-09-24

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Legal Events

Date Code Title Description
PL Patent ceased