GB2111356B - Improvements in circuit arrangements for modifying dynamic range - Google Patents

Improvements in circuit arrangements for modifying dynamic range

Info

Publication number
GB2111356B
GB2111356B GB08137168A GB8137168A GB2111356B GB 2111356 B GB2111356 B GB 2111356B GB 08137168 A GB08137168 A GB 08137168A GB 8137168 A GB8137168 A GB 8137168A GB 2111356 B GB2111356 B GB 2111356B
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
GB08137168A
Other languages
English (en)
Other versions
GB2111356A (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
Application filed by Individual filed Critical Individual
Publication of GB2111356A publication Critical patent/GB2111356A/en
Application granted granted Critical
Publication of GB2111356B publication Critical patent/GB2111356B/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
    • H03G9/025—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
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H04B1/64—Volume compression or expansion arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
GB08137168A 1981-12-01 1981-12-09 Improvements in circuit arrangements for modifying dynamic range Expired GB2111356B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32552981A 1981-12-01 1981-12-01

Publications (2)

Publication Number Publication Date
GB2111356A GB2111356A (en) 1983-06-29
GB2111356B true GB2111356B (en) 1985-03-20

Family

ID=23268266

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08137168A Expired GB2111356B (en) 1981-12-01 1981-12-09 Improvements in circuit arrangements for modifying dynamic range

Country Status (10)

Country Link
KR (1) KR890000333B1 (fr)
BE (1) BE901907Q (fr)
CA (1) CA1177759A (fr)
CH (1) CH656270A5 (fr)
DE (2) DE3153730C2 (fr)
FR (1) FR2517495B1 (fr)
GB (1) GB2111356B (fr)
MY (1) MY8700931A (fr)
NL (1) NL192905C (fr)
SE (1) SE449282B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3343225A1 (de) * 1983-11-30 1985-06-05 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Rundfunkempfangsgeraet
US4815068A (en) * 1987-08-07 1989-03-21 Dolby Ray Milton Audio encoder for use with more than one decoder each having different characteristics
US4882761A (en) * 1988-02-23 1989-11-21 Resound Corporation Low voltage programmable compressor
US4882762A (en) * 1988-02-23 1989-11-21 Resound Corporation Multi-band programmable compression system
US5278912A (en) * 1991-06-28 1994-01-11 Resound Corporation Multiband programmable compression system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US28426A (en) * 1860-05-22 Shortening tires
US3846719A (en) * 1973-09-13 1974-11-05 Dolby Laboratories Inc Noise reduction systems
US3903485A (en) * 1968-01-10 1975-09-02 Ray Milton Dolby Compressors, expanders and noise reduction systems
USRE28426E (en) * 1968-11-01 1975-05-20 Signal compressors and expanders
US3757254A (en) * 1970-06-05 1973-09-04 Victor Co Ltd N system noise reduction system and apparatus using a compression and expansio
GB1390341A (en) * 1971-03-12 1975-04-09 Dolby Laboratories Inc Signal compressors and expanders
GB1432763A (en) * 1972-05-02 1976-04-22 Dolby Laboratories Inc Compressors expanders and noise reduction systems
US3875537A (en) * 1972-05-02 1975-04-01 Dolby Laboratories Inc Circuits for modifying the dynamic range of an input signal
US3934190A (en) * 1972-09-15 1976-01-20 Dolby Laboratories, Inc. Signal compressors and expanders
US3909733A (en) * 1973-05-17 1975-09-30 Dolby Laboratories Inc Dynamic range modifying circuits utilizing variable negative resistance
JPS51127608A (en) * 1975-04-30 1976-11-06 Victor Co Of Japan Ltd Signal transmitting unit
JPS5552971A (en) * 1978-10-16 1980-04-17 Mitsubishi Electric Corp Simulator for radar indicator
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
US4498060A (en) * 1981-12-01 1985-02-05 Dolby Ray Milton Circuit arrangements for modifying dynamic range using series arranged bi-linear circuits

Also Published As

Publication number Publication date
SE8107496L (sv) 1983-06-02
BE901907Q (fr) 1985-07-01
FR2517495A1 (fr) 1983-06-03
DE3153730C2 (fr) 1992-10-29
DE3151213A1 (de) 1983-06-09
MY8700931A (en) 1987-12-31
FR2517495B1 (fr) 1985-11-15
DE3151213C2 (fr) 1992-11-19
KR890000333B1 (ko) 1989-03-14
NL192905C (nl) 1998-04-02
CA1177759A (fr) 1984-11-13
NL8105776A (nl) 1983-07-01
GB2111356A (en) 1983-06-29
CH656270A5 (de) 1986-06-13
KR830008463A (ko) 1983-11-18
SE449282B (sv) 1987-04-13
NL192905B (nl) 1997-12-01

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Legal Events

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

Effective date: 20011208