NL189988C - COMPANDOR NOISE REDUCTION SYSTEM AND COMPRESSOR AND EXPANDER FOR SUCH A SYSTEM. - Google Patents

COMPANDOR NOISE REDUCTION SYSTEM AND COMPRESSOR AND EXPANDER FOR SUCH A SYSTEM.

Info

Publication number
NL189988C
NL189988C NLAANVRAGE8103124,A NL8103124A NL189988C NL 189988 C NL189988 C NL 189988C NL 8103124 A NL8103124 A NL 8103124A NL 189988 C NL189988 C NL 189988C
Authority
NL
Netherlands
Prior art keywords
compandor
expander
compressor
noise reduction
reduction system
Prior art date
Application number
NLAANVRAGE8103124,A
Other languages
Dutch (nl)
Other versions
NL189988B (en
NL8103124A (en
Original Assignee
Dolby Ray Milton
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 Dolby Ray Milton filed Critical Dolby Ray Milton
Publication of NL8103124A publication Critical patent/NL8103124A/en
Publication of NL189988B publication Critical patent/NL189988B/en
Application granted granted Critical
Publication of NL189988C publication Critical patent/NL189988C/en

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
NLAANVRAGE8103124,A 1980-06-30 1981-06-29 COMPANDOR NOISE REDUCTION SYSTEM AND COMPRESSOR AND EXPANDER FOR SUCH A SYSTEM. NL189988C (en)

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 (3)

Publication Number Publication Date
NL8103124A NL8103124A (en) 1982-01-18
NL189988B NL189988B (en) 1993-04-16
NL189988C true NL189988C (en) 1993-09-16

Family

ID=26860115

Family Applications (3)

Application Number Title Priority Date Filing Date
NL8103123A NL192652C (en) 1980-06-30 1981-06-29 Circuit member for reducing medium overload effects in signal recording and signal transmission systems.
NLAANVRAGE8103124,A NL189988C (en) 1980-06-30 1981-06-29 COMPANDOR NOISE REDUCTION SYSTEM AND COMPRESSOR AND EXPANDER FOR SUCH A SYSTEM.
NLAANVRAGE8103122,A NL190214C (en) 1980-06-30 1981-06-29 CHAIN DEVICE FOR CHANGING THE DYNAMIC AREA OF AN INPUT SIGNAL.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL8103123A NL192652C (en) 1980-06-30 1981-06-29 Circuit member for reducing medium overload effects in signal recording and signal transmission systems.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE8103122,A NL190214C (en) 1980-06-30 1981-06-29 CHAIN DEVICE FOR CHANGING THE DYNAMIC AREA OF AN INPUT SIGNAL.

Country Status (17)

Country Link
KR (4) KR840002491B1 (en)
AT (3) AT386911B (en)
AU (3) AU544888B2 (en)
BR (3) BR8104156A (en)
CH (3) CH654703A5 (en)
DE (3) DE3125790A1 (en)
DK (3) DK172325B1 (en)
ES (3) ES503496A0 (en)
FI (3) FI79428C (en)
GB (3) GB2079113B (en)
HK (3) HK28485A (en)
IT (3) IT1137985B (en)
MY (3) MY8501149A (en)
NL (3) NL192652C (en)
NO (3) NO157399C (en)
SE (3) SE450985B (en)
SG (3) SG4285G (en)

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
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
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
DE10011193B4 (en) * 2000-03-08 2004-02-05 Sennheiser Electronic Gmbh & Co. Kg Compander system with a compressor circuit and an expander circuit

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
US3903485A (en) * 1968-01-10 1975-09-02 Ray Milton Dolby Compressors, expanders and noise reduction systems
GB1253031A (en) * 1968-01-10 1971-11-10
US3846719A (en) * 1973-09-13 1974-11-05 Dolby Laboratories Inc 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
US3795876A (en) * 1971-04-06 1974-03-05 Victor Company Of Japan Compression and/or expansion system and circuit
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
CA1000617A (en) * 1973-05-17 1976-11-30 Ray M. Dolby Compressors, expanders and noise reduction systems
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 (en) * 1978-01-28 1982-06-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit for automatic dynamic compression or expansion
JPS5552971A (en) * 1978-10-16 1980-04-17 Mitsubishi Electric Corp Simulator for radar indicator

Also Published As

Publication number Publication date
ES503497A0 (en) 1982-11-01
DE3125790A1 (en) 1982-05-13
FI812026L (en) 1981-12-31
MY8501148A (en) 1985-12-31
DE3125788C2 (en) 1992-06-11
DK282981A (en) 1981-12-31
AT386304B (en) 1988-08-10
SE8104062L (en) 1981-12-31
AU7239381A (en) 1982-01-07
GB2079114B (en) 1984-10-03
MY8501147A (en) 1985-12-31
MY8501149A (en) 1985-12-31
SE8104061L (en) 1981-12-31
ES8204255A1 (en) 1982-04-16
DE3125789A1 (en) 1982-05-19
KR840002492B1 (en) 1984-12-31
HK28485A (en) 1985-04-12
ATA291581A (en) 1983-03-15
DK282581A (en) 1981-12-31
DK156356B (en) 1989-08-07
DE3125788A1 (en) 1982-05-13
SE447524B (en) 1986-11-17
NO157399C (en) 1988-03-09
DK282881A (en) 1981-12-31
DE3125789C2 (en) 1984-01-12
FI79428B (en) 1989-08-31
NO157400B (en) 1987-11-30
AU544888B2 (en) 1985-06-20
NL192652C (en) 1997-11-04
GB2079113B (en) 1984-10-03
NL190214B (en) 1993-07-01
FI76456C (en) 1988-10-10
KR830006992A (en) 1983-10-12
KR830006993A (en) 1983-10-12
GB2079112A (en) 1982-01-13
BR8104156A (en) 1982-03-16
NO157398B (en) 1987-11-30
AU7236581A (en) 1982-01-07
SE8104063L (en) 1981-12-31
GB2079114A (en) 1982-01-13
AT386911B (en) 1988-11-10
SG4585G (en) 1985-06-14
AU7239481A (en) 1982-01-07
IT8122651A0 (en) 1981-06-30
GB2079113A (en) 1982-01-13
AU546641B2 (en) 1985-09-12
NL189988B (en) 1993-04-16
NL8103122A (en) 1982-01-18
NO812216L (en) 1982-01-04
CH660653A5 (en) 1987-05-15
SE447525B (en) 1986-11-17
BR8104158A (en) 1982-03-16
FI76456B (en) 1988-06-30
FI74368C (en) 1988-01-11
KR840002491B1 (en) 1984-12-31
IT8122650A0 (en) 1981-06-30
AT372796B (en) 1983-11-10
ES503496A0 (en) 1982-04-16
FI812025L (en) 1981-12-31
SE450985B (en) 1987-09-07
IT1137987B (en) 1986-09-10
ES8301084A1 (en) 1982-11-01
DK168806B1 (en) 1994-06-13
IT1137986B (en) 1986-09-10
BR8104157A (en) 1982-03-16
IT1137985B (en) 1986-09-10
IT8122652A0 (en) 1981-06-30
NL192652B (en) 1997-07-01
NO157398C (en) 1988-03-09
SG4285G (en) 1985-06-14
NO157400C (en) 1988-03-09
DE3125790C2 (en) 1992-11-12
ATA291481A (en) 1987-12-15
DK172325B1 (en) 1998-03-16
DK156356C (en) 1989-12-27
GB2079112B (en) 1984-10-03
ATA291681A (en) 1988-03-15
NL8103124A (en) 1982-01-18
CH662684A5 (en) 1987-10-15
ES503493A0 (en) 1982-10-01
NO812218L (en) 1982-01-04
ES8300233A1 (en) 1982-10-01
HK28285A (en) 1985-04-12
NO157399B (en) 1987-11-30
NL8103123A (en) 1982-01-18
NL190214C (en) 1993-12-01
HK28385A (en) 1985-04-12
SG4385G (en) 1985-06-14
AU545125B2 (en) 1985-07-04
FI79428C (en) 1989-12-11
NO812217L (en) 1982-01-04
KR880000106B1 (en) 1988-02-23
FI812024L (en) 1981-12-31
FI74368B (en) 1987-09-30
CH654703A5 (en) 1986-02-28
KR880000105B1 (en) 1988-02-23

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V4 Discontinued because of reaching the maximum lifetime of a patent

Free format text: 20010629