GB2079113B - Networks for suppressing mid-frequency modulation effects in compressors expanders and noise reduction systems - Google Patents

Networks for suppressing mid-frequency modulation effects in compressors expanders and noise reduction systems

Info

Publication number: GB2079113B
Authority: GB; United Kingdom
Prior art keywords: expanders; compressors; networks; noise reduction; frequency modulation
Prior art date: 1980-06-30
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

GB8119973A

Other versions

GB2079113A (en

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.)

1980-06-30

Filing date

1981-06-29

Publication date

1984-10-03

1981-06-29 Application filed by Individual filed Critical Individual

1982-01-13 Publication of GB2079113A publication Critical patent/GB2079113A/en

1984-10-03 Application granted granted Critical

1984-10-03 Publication of GB2079113B publication Critical patent/GB2079113B/en

Status Expired legal-status Critical Current

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

GB8119973A 1980-06-30 1981-06-29 Networks for suppressing mid-frequency modulation effects in compressors expanders and noise reduction systems Expired GB2079113B (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
GB2079113A GB2079113A (en)	1982-01-13
GB2079113B true GB2079113B (en)	1984-10-03

Family

ID=26860115

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
GB8119973A Expired GB2079113B (en)	1980-06-30	1981-06-29	Networks for suppressing mid-frequency modulation effects in compressors expanders and noise reduction systems
GB8119972A Expired GB2079112B (en)	1980-06-30	1981-06-29	Circuit arrangement for modifying dynamic range
GB8119974A Expired GB2079114B (en)	1980-06-30	1981-06-29	Circuit arrangements for reducing media overload effects in signal recording and transmission systems

Family Applications After (2)

Application Number	Title	Priority Date	Filing Date
GB8119972A Expired GB2079112B (en)	1980-06-30	1981-06-29	Circuit arrangement for modifying dynamic range
GB8119974A Expired GB2079114B (en)	1980-06-30	1981-06-29	Circuit arrangements for reducing media overload effects in signal recording and transmission systems

Country Status (17)

Country	Link
KR (4)	KR880000106B1 (en)
AT (3)	AT386911B (en)
AU (3)	AU546641B2 (en)
BR (3)	BR8104158A (en)
CH (3)	CH654703A5 (en)
DE (3)	DE3125790A1 (en)
DK (3)	DK168806B1 (en)
ES (3)	ES503493A0 (en)
FI (3)	FI79428C (en)
GB (3)	GB2079113B (en)
HK (3)	HK28385A (en)
IT (3)	IT1137985B (en)
MY (3)	MY8501149A (en)
NL (3)	NL190214C (en)
NO (3)	NO157398C (en)
SE (3)	SE447524B (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
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 (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
GB1253031A (en) *	1968-01-10	1971-11-10
US3903485A (en) *	1968-01-10	1975-09-02	Ray Milton Dolby	Compressors, expanders and noise reduction systems
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
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 (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

1981
- 1981-06-26 DK DK282981A patent/DK168806B1/en not_active IP Right Cessation
- 1981-06-26 DK DK282881A patent/DK172325B1/en not_active IP Right Cessation
- 1981-06-26 DK DK282581A patent/DK156356C/en not_active IP Right Cessation
- 1981-06-29 SE SE8104061A patent/SE447524B/en not_active IP Right Cessation
- 1981-06-29 SE SE8104062A patent/SE450985B/en not_active IP Right Cessation
- 1981-06-29 SE SE8104063A patent/SE447525B/en not_active IP Right Cessation
- 1981-06-29 FI FI812025A patent/FI79428C/en not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103122,A patent/NL190214C/en not_active IP Right Cessation
- 1981-06-29 ES ES503493A patent/ES503493A0/en active Granted
- 1981-06-29 NO NO812216A patent/NO157398C/en not_active IP Right Cessation
- 1981-06-29 NO NO812218A patent/NO157400C/en not_active IP Right Cessation
- 1981-06-29 FI FI812024A patent/FI74368C/en not_active IP Right Cessation
- 1981-06-29 FI FI812026A patent/FI76456C/en not_active IP Right Cessation
- 1981-06-29 ES ES503497A patent/ES503497A0/en active Granted
- 1981-06-29 GB GB8119973A patent/GB2079113B/en not_active Expired
- 1981-06-29 NL NL8103123A patent/NL192652C/en not_active IP Right Cessation
- 1981-06-29 NO NO812217A patent/NO157399C/en not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103124,A patent/NL189988C/en not_active IP Right Cessation
- 1981-06-29 GB GB8119972A patent/GB2079112B/en not_active Expired
- 1981-06-29 GB GB8119974A patent/GB2079114B/en not_active Expired
- 1981-06-29 ES ES503496A patent/ES8204255A1/en not_active Expired
- 1981-06-30 AT AT0291681A patent/AT386911B/en not_active IP Right Cessation
- 1981-06-30 CH CH4293/81A patent/CH654703A5/en not_active IP Right Cessation
- 1981-06-30 AT AT0291581A patent/AT372796B/en not_active IP Right Cessation
- 1981-06-30 KR KR1019810002351A patent/KR880000106B1/en active
- 1981-06-30 AT AT0291481A patent/AT386304B/en not_active IP Right Cessation
- 1981-06-30 DE DE19813125790 patent/DE3125790A1/en active Granted
- 1981-06-30 IT IT22650/81A patent/IT1137985B/en active
- 1981-06-30 BR BR8104158A patent/BR8104158A/en not_active IP Right Cessation
- 1981-06-30 IT IT22651/81A patent/IT1137986B/en active
- 1981-06-30 CH CH4292/81A patent/CH662684A5/en not_active IP Right Cessation
- 1981-06-30 BR BR8104157A patent/BR8104157A/en not_active IP Right Cessation
- 1981-06-30 AU AU72365/81A patent/AU546641B2/en not_active Expired
- 1981-06-30 CH CH4294/81A patent/CH660653A5/en not_active IP Right Cessation
- 1981-06-30 DE DE3125789A patent/DE3125789C2/en not_active Expired
- 1981-06-30 KR KR1019810002352A patent/KR840002491B1/en active
- 1981-06-30 AU AU72393/81A patent/AU544888B2/en not_active Expired
- 1981-06-30 AU AU72394/81A patent/AU545125B2/en not_active Expired
- 1981-06-30 IT IT22652/81A patent/IT1137987B/en active
- 1981-06-30 BR BR8104156A patent/BR8104156A/en not_active IP Right Cessation
- 1981-06-30 DE DE19813125788 patent/DE3125788A1/en active Granted
- 1981-06-30 KR KR1019810002350A patent/KR880000105B1/en active
1984
- 1984-09-19 KR KR1019840005735A patent/KR840002492B1/en not_active IP Right Cessation
1985
- 1985-01-16 SG SG42/85A patent/SG4285G/en unknown
- 1985-01-16 SG SG43/85A patent/SG4385G/en unknown
- 1985-01-16 SG SG45/85A patent/SG4585G/en unknown
- 1985-04-04 HK HK283/85A patent/HK28385A/en not_active IP Right Cessation
- 1985-04-04 HK HK284/85A patent/HK28485A/en not_active IP Right Cessation
- 1985-04-04 HK HK282/85A patent/HK28285A/en not_active IP Right Cessation
- 1985-12-30 MY MY1149/85A patent/MY8501149A/en unknown
- 1985-12-30 MY MY1148/85A patent/MY8501148A/en unknown
- 1985-12-30 MY MY1147/85A patent/MY8501147A/en unknown

Also Published As

Publication number	Publication date
MY8501149A (en)	1985-12-31
DE3125790A1 (en)	1982-05-13
NO812216L (en)	1982-01-04
ES503496A0 (en)	1982-04-16
CH654703A5 (en)	1986-02-28
AU7239381A (en)	1982-01-07
DE3125788A1 (en)	1982-05-13
AT386911B (en)	1988-11-10
NL8103124A (en)	1982-01-18
IT8122650A0 (en)	1981-06-30
FI79428C (en)	1989-12-11
AU545125B2 (en)	1985-07-04
GB2079114A (en)	1982-01-13
NO157398B (en)	1987-11-30
BR8104156A (en)	1982-03-16
DE3125790C2 (en)	1992-11-12
GB2079113A (en)	1982-01-13
DE3125788C2 (en)	1992-06-11
DK282581A (en)	1981-12-31
SE450985B (en)	1987-09-07
HK28285A (en)	1985-04-12
FI74368C (en)	1988-01-11
FI812026L (en)	1981-12-31
GB2079112A (en)	1982-01-13
SG4285G (en)	1985-06-14
NL190214B (en)	1993-07-01
ATA291681A (en)	1988-03-15
DK282881A (en)	1981-12-31
NO812217L (en)	1982-01-04
KR830006992A (en)	1983-10-12
FI79428B (en)	1989-08-31
NL8103123A (en)	1982-01-18
NO812218L (en)	1982-01-04
DK168806B1 (en)	1994-06-13
GB2079114B (en)	1984-10-03
SE8104063L (en)	1981-12-31
IT1137985B (en)	1986-09-10
SE8104061L (en)	1981-12-31
KR840002492B1 (en)	1984-12-31
ES8204255A1 (en)	1982-04-16
IT1137986B (en)	1986-09-10
NO157398C (en)	1988-03-09
DK172325B1 (en)	1998-03-16
ATA291481A (en)	1987-12-15
NL189988C (en)	1993-09-16
NL192652B (en)	1997-07-01
DK156356B (en)	1989-08-07
CH660653A5 (en)	1987-05-15
KR840002491B1 (en)	1984-12-31
ES8301084A1 (en)	1982-11-01
NO157400B (en)	1987-11-30
HK28485A (en)	1985-04-12
FI74368B (en)	1987-09-30
IT8122651A0 (en)	1981-06-30
AU544888B2 (en)	1985-06-20
ES503497A0 (en)	1982-11-01
AU7236581A (en)	1982-01-07
BR8104158A (en)	1982-03-16
SE447524B (en)	1986-11-17
SE8104062L (en)	1981-12-31
NL8103122A (en)	1982-01-18
NL190214C (en)	1993-12-01
IT1137987B (en)	1986-09-10
ATA291581A (en)	1983-03-15
AT386304B (en)	1988-08-10
ES8300233A1 (en)	1982-10-01
MY8501147A (en)	1985-12-31
FI76456B (en)	1988-06-30
AT372796B (en)	1983-11-10
SE447525B (en)	1986-11-17
FI812024L (en)	1981-12-31
CH662684A5 (en)	1987-10-15
NL189988B (en)	1993-04-16
ES503493A0 (en)	1982-10-01
HK28385A (en)	1985-04-12
AU7239481A (en)	1982-01-07
SG4385G (en)	1985-06-14
DK156356C (en)	1989-12-27
DE3125789C2 (en)	1984-01-12
KR830006993A (en)	1983-10-12
BR8104157A (en)	1982-03-16
NO157399C (en)	1988-03-09
NO157399B (en)	1987-11-30
MY8501148A (en)	1985-12-31
AU546641B2 (en)	1985-09-12
DE3125789A1 (en)	1982-05-19
FI76456C (en)	1988-10-10
DK282981A (en)	1981-12-31
SG4585G (en)	1985-06-14
FI812025L (en)	1981-12-31
KR880000106B1 (en)	1988-02-23
IT8122652A0 (en)	1981-06-30
NO157400C (en)	1988-03-09
KR880000105B1 (en)	1988-02-23
NL192652C (en)	1997-11-04
GB2079112B (en)	1984-10-03

Legal Events

Date	Code	Title	Description
2001-07-18	PE20	Patent expired after termination of 20 years	Effective date: 20010628

Publication	Publication Date	Title
GB2074939B (en)	1984-04-18	Acoustical laminate construction and attenuated systems comprising same
AU563372B2 (en)	1987-07-09	Crosslinked microgel particles
EP0240091A3 (en)	1987-11-25	Compressor and turbochargers
GB8328997D0 (en)	1983-11-30	Active noise reduction
GB8302580D0 (en)	1983-03-02	Preservative and fixative preparations
GB2125899B (en)	1985-10-16	Failure-sensing in hydraulic accumulators and systems
AU557288B2 (en)	1986-12-18	One sliding brake disc and brake disc
DE3468805D1 (en)	1988-02-18	Dynamic noise reduction for video
GB2079113B (en)	1984-10-03	Networks for suppressing mid-frequency modulation effects in compressors expanders and noise reduction systems
AU6741581A (en)	1981-08-27	Radio telephone system and method
ZA814433B (en)	1982-07-28	Networks for suppressing mid-frequency modulation effects in compressors,expanders and noise reduction systems
AU539234B2 (en)	1984-09-20	Noise reduction
JPS56147878A (en)	1981-11-17	Sealing agent and lubricant agent
GB8310197D0 (en)	1983-05-18	Low noise amplifier arrangements
AU545802B2 (en)	1985-08-01	Compander
AU545788B2 (en)	1985-08-01	Compander
AU1428283A (en)	1984-11-08	Web guiding and braking
AU542474B2 (en)	1985-02-21	Alterning and orientating pipes
GB8306542D0 (en)	1983-04-13	Low noise fluid moving system
GB8327725D0 (en)	1983-11-16	Dynamic noise filter
JPS5755669A (en)	1982-04-02	Dynamic data compressing system
AU544340B2 (en)	1985-05-23	Polarmotion lamination and system employing same
AU539233B2 (en)	1984-09-20	Noise reduction
GB2121273B (en)	1986-09-10	Shelf dividers and clamps
AU553841B2 (en)	1986-07-31	Noise reduction