IT1137985B - DEVICE FOR THE SUPPRESSION OF THE MODULATION EFFECTS AT INTERMEDIATE FREQUENCY IN COMPRESSORS, EXPANDERS, AND NET NOISE REDUCTION SYSTEMS - Google Patents

DEVICE FOR THE SUPPRESSION OF THE MODULATION EFFECTS AT INTERMEDIATE FREQUENCY IN COMPRESSORS, EXPANDERS, AND NET NOISE REDUCTION SYSTEMS

Info

Publication number
IT1137985B
IT1137985B IT22650/81A IT2265081A IT1137985B IT 1137985 B IT1137985 B IT 1137985B IT 22650/81 A IT22650/81 A IT 22650/81A IT 2265081 A IT2265081 A IT 2265081A IT 1137985 B IT1137985 B IT 1137985B
Authority
IT
Italy
Prior art keywords
expanders
compressors
suppression
noise reduction
intermediate frequency
Prior art date
Application number
IT22650/81A
Other languages
Italian (it)
Other versions
IT8122650A0 (en
Inventor
Dolby Ray Milton
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 IT8122650A0 publication Critical patent/IT8122650A0/en
Application granted granted Critical
Publication of IT1137985B publication Critical patent/IT1137985B/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
IT22650/81A 1980-06-30 1981-06-30 DEVICE FOR THE SUPPRESSION OF THE MODULATION EFFECTS AT INTERMEDIATE FREQUENCY IN COMPRESSORS, EXPANDERS, AND NET NOISE REDUCTION SYSTEMS IT1137985B (en)

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
IT8122650A0 IT8122650A0 (en) 1981-06-30
IT1137985B true IT1137985B (en) 1986-09-10

Family

ID=26860115

Family Applications (3)

Application Number Title Priority Date Filing Date
IT22652/81A IT1137987B (en) 1980-06-30 1981-06-30 DEVICE TO MODIFY THE DYNAMICS OF AN ELECTRIC SIGNAL
IT22650/81A IT1137985B (en) 1980-06-30 1981-06-30 DEVICE FOR THE SUPPRESSION OF THE MODULATION EFFECTS AT INTERMEDIATE FREQUENCY IN COMPRESSORS, EXPANDERS, AND NET NOISE REDUCTION SYSTEMS
IT22651/81A IT1137986B (en) 1980-06-30 1981-06-30 DEVICE FOR THE REDUCTION OF THE SATURATION EFFECTS IN THE SYSTEMS FOR THE RECORDING AND TRANSMISSION OF SIGNALS

Family Applications Before (1)

Application Number Title Priority Date Filing Date
IT22652/81A IT1137987B (en) 1980-06-30 1981-06-30 DEVICE TO MODIFY THE DYNAMICS OF AN ELECTRIC SIGNAL

Family Applications After (1)

Application Number Title Priority Date Filing Date
IT22651/81A IT1137986B (en) 1980-06-30 1981-06-30 DEVICE FOR THE REDUCTION OF THE SATURATION EFFECTS IN THE SYSTEMS FOR THE RECORDING AND TRANSMISSION OF SIGNALS

Country Status (17)

Country Link
KR (4) KR880000105B1 (en)
AT (3) AT372796B (en)
AU (3) AU544888B2 (en)
BR (3) BR8104156A (en)
CH (3) CH662684A5 (en)
DE (3) DE3125790A1 (en)
DK (3) DK168806B1 (en)
ES (3) ES503497A0 (en)
FI (3) FI79428C (en)
GB (3) GB2079113B (en)
HK (3) HK28285A (en)
IT (3) IT1137987B (en)
MY (3) MY8501147A (en)
NL (3) NL190214C (en)
NO (3) NO157398C (en)
SE (3) SE447524B (en)
SG (3) SG4585G (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
FI57502C (en) * 1971-04-06 1980-08-11 Victor Company Of Japan KOMPRESSIONS- OCH EXPANSIONSSYSTEM
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
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
NL190214C (en) 1993-12-01
AU7239381A (en) 1982-01-07
AT372796B (en) 1983-11-10
ES503493A0 (en) 1982-10-01
IT8122651A0 (en) 1981-06-30
KR830006992A (en) 1983-10-12
GB2079114B (en) 1984-10-03
NL189988B (en) 1993-04-16
DK156356C (en) 1989-12-27
SE450985B (en) 1987-09-07
NO157400B (en) 1987-11-30
AT386911B (en) 1988-11-10
IT1137986B (en) 1986-09-10
FI79428C (en) 1989-12-11
DK156356B (en) 1989-08-07
ES8301084A1 (en) 1982-11-01
AU544888B2 (en) 1985-06-20
FI79428B (en) 1989-08-31
CH660653A5 (en) 1987-05-15
DE3125788C2 (en) 1992-06-11
AU546641B2 (en) 1985-09-12
NO157398B (en) 1987-11-30
NO157399B (en) 1987-11-30
NL189988C (en) 1993-09-16
BR8104156A (en) 1982-03-16
MY8501149A (en) 1985-12-31
DK168806B1 (en) 1994-06-13
BR8104157A (en) 1982-03-16
FI812026L (en) 1981-12-31
GB2079113B (en) 1984-10-03
GB2079112B (en) 1984-10-03
FI812024L (en) 1981-12-31
HK28385A (en) 1985-04-12
GB2079113A (en) 1982-01-13
ES503496A0 (en) 1982-04-16
KR840002491B1 (en) 1984-12-31
FI812025L (en) 1981-12-31
SG4585G (en) 1985-06-14
MY8501148A (en) 1985-12-31
ATA291581A (en) 1983-03-15
NO157400C (en) 1988-03-09
KR840002492B1 (en) 1984-12-31
DE3125789A1 (en) 1982-05-19
CH654703A5 (en) 1986-02-28
SG4385G (en) 1985-06-14
SE8104061L (en) 1981-12-31
NL192652B (en) 1997-07-01
NO157399C (en) 1988-03-09
NO812218L (en) 1982-01-04
NL192652C (en) 1997-11-04
AU7236581A (en) 1982-01-07
NL190214B (en) 1993-07-01
AU545125B2 (en) 1985-07-04
DE3125790C2 (en) 1992-11-12
SG4285G (en) 1985-06-14
BR8104158A (en) 1982-03-16
ATA291681A (en) 1988-03-15
NO812216L (en) 1982-01-04
NL8103122A (en) 1982-01-18
SE8104063L (en) 1981-12-31
SE447525B (en) 1986-11-17
FI74368B (en) 1987-09-30
FI76456B (en) 1988-06-30
DK172325B1 (en) 1998-03-16
DK282581A (en) 1981-12-31
NO812217L (en) 1982-01-04
KR880000106B1 (en) 1988-02-23
GB2079114A (en) 1982-01-13
GB2079112A (en) 1982-01-13
DE3125789C2 (en) 1984-01-12
HK28285A (en) 1985-04-12
FI74368C (en) 1988-01-11
KR880000105B1 (en) 1988-02-23
KR830006993A (en) 1983-10-12
ES8204255A1 (en) 1982-04-16
AT386304B (en) 1988-08-10
MY8501147A (en) 1985-12-31
SE447524B (en) 1986-11-17
ES503497A0 (en) 1982-11-01
NL8103124A (en) 1982-01-18
DE3125788A1 (en) 1982-05-13
SE8104062L (en) 1981-12-31
IT8122652A0 (en) 1981-06-30
IT1137987B (en) 1986-09-10
CH662684A5 (en) 1987-10-15
NL8103123A (en) 1982-01-18
ES8300233A1 (en) 1982-10-01
NO157398C (en) 1988-03-09
IT8122650A0 (en) 1981-06-30
HK28485A (en) 1985-04-12
ATA291481A (en) 1987-12-15
DK282981A (en) 1981-12-31
FI76456C (en) 1988-10-10
DK282881A (en) 1981-12-31
DE3125790A1 (en) 1982-05-13
AU7239481A (en) 1982-01-07

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970628