DE3752161D1 - Schaltungsanordnung zum Abändern des Dynamikbereiches eines Signals - Google Patents

Schaltungsanordnung zum Abändern des Dynamikbereiches eines Signals

Info

Publication number
DE3752161D1
DE3752161D1 DE3752161T DE3752161T DE3752161D1 DE 3752161 D1 DE3752161 D1 DE 3752161D1 DE 3752161 T DE3752161 T DE 3752161T DE 3752161 T DE3752161 T DE 3752161T DE 3752161 D1 DE3752161 D1 DE 3752161D1
Authority
DE
Germany
Prior art keywords
changing
signal
dynamic range
circuit arrangement
arrangement
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 - Fee Related
Application number
DE3752161T
Other languages
English (en)
Other versions
DE3752161T2 (de
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.)
Dolby Laboratories Licensing Corp
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 US06/835,243 external-priority patent/US4922535A/en
Priority claimed from US07/014,620 external-priority patent/US4786879A/en
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of DE3752161D1 publication Critical patent/DE3752161D1/de
Publication of DE3752161T2 publication Critical patent/DE3752161T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H03G7/004—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers using continuously variable impedance devices
    • 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)
  • Multimedia (AREA)
  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)
DE3752161T 1986-03-03 1987-03-03 Schaltungsanordnung zum Abändern des Dynamikbereiches eines Signals Expired - Fee Related DE3752161T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US83524586A 1986-03-03 1986-03-03
US06/835,243 US4922535A (en) 1986-03-03 1986-03-03 Transient control aspects of circuit arrangements for altering the dynamic range of audio signals
US07/014,620 US4786879A (en) 1986-03-03 1987-02-25 Attenuator circuit employing bootstrapping

Publications (2)

Publication Number Publication Date
DE3752161D1 true DE3752161D1 (de) 1998-02-19
DE3752161T2 DE3752161T2 (de) 1998-06-10

Family

ID=27360147

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3752161T Expired - Fee Related DE3752161T2 (de) 1986-03-03 1987-03-03 Schaltungsanordnung zum Abändern des Dynamikbereiches eines Signals
DE8787301845T Expired - Lifetime DE3779673T2 (de) 1986-03-03 1987-03-03 Abschwaechungsschaltung mit bootstrapping.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8787301845T Expired - Lifetime DE3779673T2 (de) 1986-03-03 1987-03-03 Abschwaechungsschaltung mit bootstrapping.

Country Status (4)

Country Link
EP (1) EP0236122B1 (de)
CA (1) CA1269138A (de)
DE (2) DE3752161T2 (de)
SG (1) SG52736A1 (de)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE753495A (fr) * 1969-07-21 1970-12-16 Dolby Laboratories Inc Filtres limiteurs perfectionnes pour systemes attenuateurs de bruit. (
GB2111355B (en) * 1981-12-01 1985-02-13 Ray Milton Dolby Improvements in circuit arrangements for modifying dynamic range

Also Published As

Publication number Publication date
EP0236122A2 (de) 1987-09-09
DE3752161T2 (de) 1998-06-10
CA1269138A (en) 1990-05-15
SG52736A1 (en) 1998-09-28
DE3779673D1 (de) 1992-07-16
EP0236122B1 (de) 1992-06-10
EP0236122A3 (en) 1989-03-01
DE3779673T2 (de) 1992-12-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DOLBY LABORATORIES LICENSING CORP., SAN FRANCISCO,

8381 Inventor (new situation)

Inventor name: DOLBY, RAY MILTON, SAN FRANCISCO, CALIF., US

8339 Ceased/non-payment of the annual fee