SE450985B - Kretsanordning for modifiering av en insignals dynamiska omrade - Google Patents

Kretsanordning for modifiering av en insignals dynamiska omrade

Info

Publication number
SE450985B
SE450985B SE8104062A SE8104062A SE450985B SE 450985 B SE450985 B SE 450985B SE 8104062 A SE8104062 A SE 8104062A SE 8104062 A SE8104062 A SE 8104062A SE 450985 B SE450985 B SE 450985B
Authority
SE
Sweden
Prior art keywords
circuit
circuits
threshold
level
signal
Prior art date
Application number
SE8104062A
Other languages
English (en)
Swedish (sv)
Other versions
SE8104062L (sv
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
Application filed by Ray Milton Dolby filed Critical Ray Milton Dolby
Publication of SE8104062L publication Critical patent/SE8104062L/
Publication of SE450985B publication Critical patent/SE450985B/sv

Links

Classifications

    • 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
    • H03G9/12—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

Landscapes

  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
SE8104062A 1980-06-30 1981-06-29 Kretsanordning for modifiering av en insignals dynamiska omrade SE450985B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16395080A 1980-06-30 1980-06-30
US18077180A 1980-08-22 1980-08-22

Publications (2)

Publication Number Publication Date
SE8104062L SE8104062L (sv) 1981-12-31
SE450985B true SE450985B (sv) 1987-09-07

Family

ID=26860115

Family Applications (3)

Application Number Title Priority Date Filing Date
SE8104063A SE447525B (sv) 1980-06-30 1981-06-29 Kompressor, expander samt brusreduceringsanleggning innefattande en kompressor och en expander
SE8104061A SE447524B (sv) 1980-06-30 1981-06-29 Signalkompressor
SE8104062A SE450985B (sv) 1980-06-30 1981-06-29 Kretsanordning for modifiering av en insignals dynamiska omrade

Family Applications Before (2)

Application Number Title Priority Date Filing Date
SE8104063A SE447525B (sv) 1980-06-30 1981-06-29 Kompressor, expander samt brusreduceringsanleggning innefattande en kompressor och en expander
SE8104061A SE447524B (sv) 1980-06-30 1981-06-29 Signalkompressor

Country Status (17)

Country Link
KR (4) KR880000105B1 (de)
AT (3) AT372796B (de)
AU (3) AU546641B2 (de)
BR (3) BR8104158A (de)
CH (3) CH662684A5 (de)
DE (3) DE3125788A1 (de)
DK (3) DK156356C (de)
ES (3) ES8301084A1 (de)
FI (3) FI74368C (de)
GB (3) GB2079112B (de)
HK (3) HK28385A (de)
IT (3) IT1137985B (de)
MY (3) MY8501149A (de)
NL (3) NL189988C (de)
NO (3) NO157400C (de)
SE (3) SE447525B (de)
SG (3) SG4285G (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736433A (en) * 1985-06-17 1988-04-05 Dolby Ray Milton Circuit arrangements for modifying dynamic range using action substitution and superposition techniques
US4815068A (en) * 1987-08-07 1989-03-21 Dolby Ray Milton Audio encoder for use with more than one decoder each having different characteristics
US5651028A (en) * 1995-05-09 1997-07-22 Unisys Corporation Data transmission system with a low peak-to-average power ratio based on distorting frequently occuring signals
US5793797A (en) * 1995-05-09 1998-08-11 Unisys Corporation Data transmisson system with a low peak-to-average power ratio based on distorting small amplitude signals
DE10011193B4 (de) * 2000-03-08 2004-02-05 Sennheiser Electronic Gmbh & Co. Kg Kompandersystem mit einer Kompressorschaltung und einer Expanderschaltung

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US28426A (en) * 1860-05-22 Shortening tires
US2558002A (en) * 1939-10-24 1951-06-26 Int Standard Electric Corp Volume compression system
US3022473A (en) * 1959-08-18 1962-02-20 Bell Telephone Labor Inc Signal recovery circuits
GB1253031A (de) * 1968-01-10 1971-11-10
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
FI57502C (fi) * 1971-04-06 1980-08-11 Victor Company Of Japan Kompressions- och expansionssystem
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
US3971405A (en) * 1974-07-15 1976-07-27 Parker-Hannifin Corporation Pressure controlled hydrant valve coupler
US3930208A (en) * 1974-08-29 1975-12-30 Northern Electric Co A-C signal processing circuits for compandors
US3902131A (en) * 1974-09-06 1975-08-26 Quadracast Systems Tandem audio dynamic range expander
JPS51127608A (en) * 1975-04-30 1976-11-06 Victor Co Of Japan Ltd Signal transmitting unit
US4061874A (en) * 1976-06-03 1977-12-06 Fricke J P System for reproducing sound information
DE2803751C2 (de) * 1978-01-28 1982-06-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltung zur automatischen Dynamik- Kompression oder -Expansion
JPS5552971A (en) * 1978-10-16 1980-04-17 Mitsubishi Electric Corp Simulator for radar indicator

Also Published As

Publication number Publication date
IT1137986B (it) 1986-09-10
CH662684A5 (de) 1987-10-15
DE3125790C2 (de) 1992-11-12
SE8104062L (sv) 1981-12-31
NL8103124A (nl) 1982-01-18
KR830006992A (ko) 1983-10-12
KR840002492B1 (ko) 1984-12-31
ATA291481A (de) 1987-12-15
NL189988B (nl) 1993-04-16
CH654703A5 (de) 1986-02-28
SG4285G (en) 1985-06-14
MY8501149A (en) 1985-12-31
ES503493A0 (es) 1982-10-01
NL190214C (nl) 1993-12-01
NO157400C (no) 1988-03-09
NL192652B (nl) 1997-07-01
NO157400B (no) 1987-11-30
FI74368B (fi) 1987-09-30
SE447524B (sv) 1986-11-17
HK28385A (en) 1985-04-12
NO812216L (no) 1982-01-04
AU545125B2 (en) 1985-07-04
BR8104156A (pt) 1982-03-16
FI74368C (fi) 1988-01-11
FI812025L (fi) 1981-12-31
FI812024L (fi) 1981-12-31
DK282981A (da) 1981-12-31
NO157398C (no) 1988-03-09
DE3125790A1 (de) 1982-05-13
AT386911B (de) 1988-11-10
SE447525B (sv) 1986-11-17
AT386304B (de) 1988-08-10
AT372796B (de) 1983-11-10
ES503497A0 (es) 1982-11-01
KR840002491B1 (ko) 1984-12-31
BR8104158A (pt) 1982-03-16
NO157399B (no) 1987-11-30
AU7236581A (en) 1982-01-07
KR830006993A (ko) 1983-10-12
AU544888B2 (en) 1985-06-20
DK168806B1 (da) 1994-06-13
AU7239381A (en) 1982-01-07
DK156356B (da) 1989-08-07
IT8122651A0 (it) 1981-06-30
NL189988C (nl) 1993-09-16
DK172325B1 (da) 1998-03-16
DE3125789C2 (de) 1984-01-12
ES8204255A1 (es) 1982-04-16
NO812218L (no) 1982-01-04
FI76456C (fi) 1988-10-10
KR880000105B1 (ko) 1988-02-23
DE3125788C2 (de) 1992-06-11
DK282581A (da) 1981-12-31
GB2079113B (en) 1984-10-03
GB2079114B (en) 1984-10-03
KR880000106B1 (ko) 1988-02-23
NL190214B (nl) 1993-07-01
GB2079114A (en) 1982-01-13
MY8501147A (en) 1985-12-31
GB2079113A (en) 1982-01-13
ATA291581A (de) 1983-03-15
IT1137985B (it) 1986-09-10
NL8103122A (nl) 1982-01-18
SG4585G (en) 1985-06-14
ES8301084A1 (es) 1982-11-01
IT8122650A0 (it) 1981-06-30
DE3125789A1 (de) 1982-05-19
HK28485A (en) 1985-04-12
FI812026L (fi) 1981-12-31
ES503496A0 (es) 1982-04-16
GB2079112B (en) 1984-10-03
CH660653A5 (de) 1987-05-15
IT8122652A0 (it) 1981-06-30
HK28285A (en) 1985-04-12
DE3125788A1 (de) 1982-05-13
NO157398B (no) 1987-11-30
ATA291681A (de) 1988-03-15
FI76456B (fi) 1988-06-30
FI79428B (fi) 1989-08-31
FI79428C (fi) 1989-12-11
NL192652C (nl) 1997-11-04
DK282881A (da) 1981-12-31
SG4385G (en) 1985-06-14
ES8300233A1 (es) 1982-10-01
AU546641B2 (en) 1985-09-12
AU7239481A (en) 1982-01-07
NO157399C (no) 1988-03-09
NL8103123A (nl) 1982-01-18
MY8501148A (en) 1985-12-31
DK156356C (da) 1989-12-27
IT1137987B (it) 1986-09-10
GB2079112A (en) 1982-01-13
SE8104061L (sv) 1981-12-31
BR8104157A (pt) 1982-03-16
SE8104063L (sv) 1981-12-31
NO812217L (no) 1982-01-04

Similar Documents

Publication Publication Date Title
US20180255396A1 (en) System and method for digital signal processing
US20210152937A1 (en) System and method for digital signal processing
US9397629B2 (en) System and method for digital signal processing
EP0583492B1 (de) Anordnung zur Anhebung der Bassfrequenz eines Audiosignals
US4490691A (en) Compressor-expander circuits and, circuit arrangements for modifying dynamic range, for suppressing mid-frequency modulation effects and for reducing media overload
CN101859581B (zh) 信号处理装置、信号处理方法和计算机程序
EP0041310A1 (de) Elektronische Schaltung zur Dynamik-Kompression oder -Expansion
US4370681A (en) Gain control circuit for noise reduction system
US10998992B2 (en) Method and device for improvement of the sound quality of an audio file
SE450985B (sv) Kretsanordning for modifiering av en insignals dynamiska omrade
US4498055A (en) Circuit arrangements for modifying dynamic range
US4293821A (en) Audio channel separating apparatus
US4314207A (en) Transistor amplifier
US3909733A (en) Dynamic range modifying circuits utilizing variable negative resistance
US4250471A (en) Circuit detector and compression-expansion networks utilizing same
USRE28426E (en) Signal compressors and expanders
NL192860C (nl) Schakelingsinrichting voor het modificeren van de dynamiek-omvang van een ingangssignaal zoals bijvoorbeeld een audio-signaal.
US20050069155A1 (en) Audio pre-amp and mid-band compressor circuit
CA1164805A (en) Signal expander
NL192905C (nl) Schakelingsinrichting voor het modificeren van de dynamiek-omvang van ingevoerde informatiesignalen.
US5113144A (en) Feed-back type emphasis circuit
US3978423A (en) Dynamic expander
US2980766A (en) Balance indicator for stereophonic sound systems
US4349787A (en) Compressor
US20090051428A1 (en) Agc circuit

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8104062-8

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8104062-8

Format of ref document f/p: F