GB2111355B - Improvements in circuit arrangements for modifying dynamic range - Google Patents

Improvements in circuit arrangements for modifying dynamic range

Info

Publication number
GB2111355B
GB2111355B GB08137167A GB8137167A GB2111355B GB 2111355 B GB2111355 B GB 2111355B GB 08137167 A GB08137167 A GB 08137167A GB 8137167 A GB8137167 A GB 8137167A GB 2111355 B GB2111355 B GB 2111355B
Authority
GB
United Kingdom
Prior art keywords
dynamic range
circuit arrangements
modifying dynamic
modifying
arrangements
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
GB08137167A
Other languages
English (en)
Other versions
GB2111355A (en
Inventor
Ray Milton Dolby
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB2111355A publication Critical patent/GB2111355A/en
Application granted granted Critical
Publication of GB2111355B publication Critical patent/GB2111355B/en
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
    • H03G9/12—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
    • 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
    • H03G9/025—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
GB08137167A 1981-12-01 1981-12-09 Improvements in circuit arrangements for modifying dynamic range Expired GB2111355B (en)

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 (2)

Publication Number Publication Date
GB2111355A GB2111355A (en) 1983-06-29
GB2111355B true GB2111355B (en) 1985-02-13

Family

ID=23268273

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08137167A Expired GB2111355B (en) 1981-12-01 1981-12-09 Improvements in circuit arrangements for modifying dynamic range

Country Status (15)

Country Link
KR (1) KR900000483B1 (enrdf_load_stackoverflow)
BE (1) BE901906Q (enrdf_load_stackoverflow)
CA (1) CA1188996A (enrdf_load_stackoverflow)
CH (1) CH656996A5 (enrdf_load_stackoverflow)
DE (1) DE3151137A1 (enrdf_load_stackoverflow)
DK (1) DK575681A (enrdf_load_stackoverflow)
ES (1) ES508394A0 (enrdf_load_stackoverflow)
FR (1) FR2517496B1 (enrdf_load_stackoverflow)
GB (1) GB2111355B (enrdf_load_stackoverflow)
GR (1) GR77317B (enrdf_load_stackoverflow)
IE (1) IE52495B1 (enrdf_load_stackoverflow)
IT (1) IT1140402B (enrdf_load_stackoverflow)
LU (1) LU83854A1 (enrdf_load_stackoverflow)
NL (1) NL192860C (enrdf_load_stackoverflow)
SE (1) SE449281B (enrdf_load_stackoverflow)

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
CA1269138A (en) * 1986-03-03 1990-05-15 Ray Milton Dolby Attenuator circuit employing bootstrapping
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
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
BE753495A (fr) * 1969-07-21 1970-12-16 Dolby Laboratories Inc Filtres limiteurs perfectionnes pour systemes attenuateurs de bruit. (
US3795876A (en) * 1971-04-06 1974-03-05 Victor Company Of Japan Compression and/or expansion system and circuit
US4101849A (en) * 1976-11-08 1978-07-18 Dbx, Inc. Adaptive filter
BE889427A (fr) * 1980-06-30 1981-10-16 Dolby Ray Milton Circuit de suppression des effets de modulation dans des compresseurs, des expanseurs et des dispositifs de reduction des bruits

Also Published As

Publication number Publication date
DK575681A (da) 1983-06-02
DE3151137A1 (de) 1983-07-14
KR900000483B1 (ko) 1990-01-30
SE449281B (sv) 1987-04-13
CA1188996A (en) 1985-06-18
IE812951L (en) 1983-06-01
SE8107495L (sv) 1983-06-02
DE3151137C2 (enrdf_load_stackoverflow) 1993-04-01
FR2517496B1 (fr) 1985-11-15
ES8303848A1 (es) 1983-02-01
CH656996A5 (de) 1986-07-31
IT8125877A0 (it) 1981-12-29
NL192860B (nl) 1997-11-03
IT1140402B (it) 1986-09-24
ES508394A0 (es) 1983-02-01
NL192860C (nl) 1998-03-04
BE901906Q (fr) 1985-07-01
IE52495B1 (en) 1987-11-25
FR2517496A1 (fr) 1983-06-03
GB2111355A (en) 1983-06-29
NL8105775A (nl) 1983-07-01
LU83854A1 (fr) 1982-05-07
GR77317B (enrdf_load_stackoverflow) 1984-09-11
KR830008462A (ko) 1983-11-18

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20011208