DK168806B1 - Kredsløbsarrangement til modifikation af dynamikområde - Google Patents

Kredsløbsarrangement til modifikation af dynamikområde Download PDF

Info

Publication number
DK168806B1
DK168806B1 DK282981A DK282981A DK168806B1 DK 168806 B1 DK168806 B1 DK 168806B1 DK 282981 A DK282981 A DK 282981A DK 282981 A DK282981 A DK 282981A DK 168806 B1 DK168806 B1 DK 168806B1
Authority
DK
Denmark
Prior art keywords
circuit
circuits
threshold
gain
level
Prior art date
Application number
DK282981A
Other languages
Danish (da)
English (en)
Other versions
DK282981A (da
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 DK282981A publication Critical patent/DK282981A/da
Application granted granted Critical
Publication of DK168806B1 publication Critical patent/DK168806B1/da

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)
DK282981A 1980-06-30 1981-06-26 Kredsløbsarrangement til modifikation af dynamikområde DK168806B1 (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US16395080A 1980-06-30 1980-06-30
US16395080 1980-06-30
US18077180A 1980-08-22 1980-08-22
US18077180 1980-08-22

Publications (2)

Publication Number Publication Date
DK282981A DK282981A (da) 1981-12-31
DK168806B1 true DK168806B1 (da) 1994-06-13

Family

ID=26860115

Family Applications (3)

Application Number Title Priority Date Filing Date
DK282981A DK168806B1 (da) 1980-06-30 1981-06-26 Kredsløbsarrangement til modifikation af dynamikområde
DK282881A DK172325B1 (da) 1980-06-30 1981-06-26 Signalkompressor og signalekspander til brug i et transmissionssystem
DK282581A DK156356C (da) 1980-06-30 1981-06-26 Kredsloeb til reduktion af overbelastningseffekter i signalindspilnings-og transmissionssystemer

Family Applications After (2)

Application Number Title Priority Date Filing Date
DK282881A DK172325B1 (da) 1980-06-30 1981-06-26 Signalkompressor og signalekspander til brug i et transmissionssystem
DK282581A DK156356C (da) 1980-06-30 1981-06-26 Kredsloeb til reduktion af overbelastningseffekter i signalindspilnings-og transmissionssystemer

Country Status (17)

Country Link
KR (4) KR880000105B1 (nl)
AT (3) AT386911B (nl)
AU (3) AU546641B2 (nl)
BR (3) BR8104157A (nl)
CH (3) CH662684A5 (nl)
DE (3) DE3125788A1 (nl)
DK (3) DK168806B1 (nl)
ES (3) ES503496A0 (nl)
FI (3) FI74368C (nl)
GB (3) GB2079112B (nl)
HK (3) HK28485A (nl)
IT (3) IT1137985B (nl)
MY (3) MY8501149A (nl)
NL (3) NL190214C (nl)
NO (3) NO157399C (nl)
SE (3) SE450985B (nl)
SG (3) SG4585G (nl)

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
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
GB1253031A (nl) * 1968-01-10 1971-11-10
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
GB1367002A (en) * 1971-04-06 1974-09-18 Victor Company Of Japan Compression and/or expansion system and circuit
US3875537A (en) * 1972-05-02 1975-04-01 Dolby Laboratories Inc Circuits for modifying the dynamic range of an input signal
GB1432763A (en) * 1972-05-02 1976-04-22 Dolby Laboratories Inc Compressors expanders and noise reduction systems
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
NO157399C (no) 1988-03-09
DE3125790C2 (nl) 1992-11-12
FI812026L (fi) 1981-12-31
DE3125789A1 (de) 1982-05-19
FI812024L (fi) 1981-12-31
FI74368C (fi) 1988-01-11
KR880000105B1 (ko) 1988-02-23
ES8300233A1 (es) 1982-10-01
SE8104063L (sv) 1981-12-31
ES8204255A1 (es) 1982-04-16
MY8501147A (en) 1985-12-31
FI79428C (fi) 1989-12-11
IT8122651A0 (it) 1981-06-30
DK172325B1 (da) 1998-03-16
NL190214B (nl) 1993-07-01
KR840002491B1 (ko) 1984-12-31
DK282581A (da) 1981-12-31
NL190214C (nl) 1993-12-01
SG4385G (en) 1985-06-14
NO157398B (no) 1987-11-30
MY8501148A (en) 1985-12-31
AU546641B2 (en) 1985-09-12
AU7236581A (en) 1982-01-07
ES8301084A1 (es) 1982-11-01
HK28385A (en) 1985-04-12
DE3125790A1 (de) 1982-05-13
ATA291681A (de) 1988-03-15
FI74368B (fi) 1987-09-30
SE447525B (sv) 1986-11-17
NL8103124A (nl) 1982-01-18
DE3125788A1 (de) 1982-05-13
MY8501149A (en) 1985-12-31
NL8103122A (nl) 1982-01-18
NL8103123A (nl) 1982-01-18
FI812025L (fi) 1981-12-31
AU7239381A (en) 1982-01-07
KR880000106B1 (ko) 1988-02-23
SG4285G (en) 1985-06-14
AU7239481A (en) 1982-01-07
CH660653A5 (de) 1987-05-15
GB2079112A (en) 1982-01-13
GB2079113B (en) 1984-10-03
NO812218L (no) 1982-01-04
NL192652C (nl) 1997-11-04
GB2079113A (en) 1982-01-13
NL189988B (nl) 1993-04-16
ES503496A0 (es) 1982-04-16
IT8122652A0 (it) 1981-06-30
NO157400B (no) 1987-11-30
DE3125789C2 (de) 1984-01-12
DE3125788C2 (nl) 1992-06-11
DK282881A (da) 1981-12-31
AU544888B2 (en) 1985-06-20
BR8104157A (pt) 1982-03-16
AT372796B (de) 1983-11-10
BR8104156A (pt) 1982-03-16
GB2079114B (en) 1984-10-03
HK28285A (en) 1985-04-12
ATA291481A (de) 1987-12-15
ES503497A0 (es) 1982-11-01
DK282981A (da) 1981-12-31
NL189988C (nl) 1993-09-16
IT8122650A0 (it) 1981-06-30
FI76456B (fi) 1988-06-30
SE8104062L (sv) 1981-12-31
GB2079114A (en) 1982-01-13
NO157398C (no) 1988-03-09
NO157400C (no) 1988-03-09
ES503493A0 (es) 1982-10-01
SE8104061L (sv) 1981-12-31
BR8104158A (pt) 1982-03-16
KR830006993A (ko) 1983-10-12
SG4585G (en) 1985-06-14
KR830006992A (ko) 1983-10-12
IT1137986B (it) 1986-09-10
FI79428B (fi) 1989-08-31
ATA291581A (de) 1983-03-15
AT386304B (de) 1988-08-10
NL192652B (nl) 1997-07-01
CH662684A5 (de) 1987-10-15
NO812217L (no) 1982-01-04
AU545125B2 (en) 1985-07-04
DK156356C (da) 1989-12-27
NO812216L (no) 1982-01-04
FI76456C (fi) 1988-10-10
SE450985B (sv) 1987-09-07
DK156356B (da) 1989-08-07
NO157399B (no) 1987-11-30
IT1137987B (it) 1986-09-10
AT386911B (de) 1988-11-10
SE447524B (sv) 1986-11-17
HK28485A (en) 1985-04-12
IT1137985B (it) 1986-09-10
KR840002492B1 (ko) 1984-12-31
GB2079112B (en) 1984-10-03
CH654703A5 (de) 1986-02-28

Similar Documents

Publication Publication Date Title
US4281295A (en) Noise reducing apparatus
US4490691A (en) Compressor-expander circuits and, circuit arrangements for modifying dynamic range, for suppressing mid-frequency modulation effects and for reducing media overload
EP0041310B1 (en) An electronic circuit for signal compression and expansion
KR900008595B1 (ko) 적응 신호웨이팅 시스템
US4538297A (en) Aurally sensitized flat frequency response noise reduction compansion system
US3967219A (en) Signal compressors and expanders
JPH0779278B2 (ja) 直列・並列式ダイナミツクレンジ改変回路及び方法
JPS6144420B2 (nl)
US4220929A (en) Signal expander
DK143150B (da) Signalkompressor eller ekspander til audiostoejreduktion
JPS6232851B2 (nl)
DK168806B1 (da) Kredsløbsarrangement til modifikation af dynamikområde
US3798562A (en) Expanding circuit in a compression and expansion system
US4498055A (en) Circuit arrangements for modifying dynamic range
KR880000597B1 (ko) 잡음 저감 회로
US2606970A (en) Method of and system for reducing noise in the transmission of signals
US2263683A (en) Expander and limiter circuits
KR900000483B1 (ko) 다이나믹 레인지 변경회로 장치
JPS5920205B2 (ja) 入力信号のダイナミツクレンジを変更するための回路
JP3317966B2 (ja) 民生用及び準職業用オーディオ・コンプレッサ、エクスパンダ、及び雑音低減回路
US3548334A (en) Noise reduction circuit and system
KR890000333B1 (ko) 다이나믹 레인지(Dynamic range)변경 회로 장치
JPH0243381B2 (nl)
JP2921375B2 (ja) 音声リミッタ装置
US2063334A (en) Transmission system

Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PUP Patent expired