IT8122650A0 - Dispositivo per la soppressione degli effetti di modulazione a frequenza intermedia nei compressori, negli espansori, e nei sistemi per la riduzione del rumore. - Google Patents
Dispositivo per la soppressione degli effetti di modulazione a frequenza intermedia nei compressori, negli espansori, e nei sistemi per la riduzione del rumore.Info
- Publication number
- IT8122650A0 IT8122650A0 IT8122650A IT2265081A IT8122650A0 IT 8122650 A0 IT8122650 A0 IT 8122650A0 IT 8122650 A IT8122650 A IT 8122650A IT 2265081 A IT2265081 A IT 2265081A IT 8122650 A0 IT8122650 A0 IT 8122650A0
- Authority
- IT
- Italy
- Prior art keywords
- expanders
- compressors
- suppression
- noise reduction
- intermediate frequency
- Prior art date
Links
- 230000001629 suppression Effects 0.000 title 1
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
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 true IT8122650A0 (it) | 1981-06-30 |
IT1137985B IT1137985B (it) | 1986-09-10 |
Family
ID=26860115
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT22650/81A IT1137985B (it) | 1980-06-30 | 1981-06-30 | Dispositivo per la soppressione degli effetti di modulazione a frequenza intermedia nei compressori,negli espansori,e net sistemi per la riduzione del rumore |
IT22651/81A IT1137986B (it) | 1980-06-30 | 1981-06-30 | Dispositivo per la riduzione degli effetti di saturazione nei sistemi per la registrazione e la trasmissione di segnali |
IT22652/81A IT1137987B (it) | 1980-06-30 | 1981-06-30 | Dispositivo per modificare la dinamica di un segnale elettrico |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT22651/81A IT1137986B (it) | 1980-06-30 | 1981-06-30 | Dispositivo per la riduzione degli effetti di saturazione nei sistemi per la registrazione e la trasmissione di segnali |
IT22652/81A IT1137987B (it) | 1980-06-30 | 1981-06-30 | Dispositivo per modificare la dinamica di un segnale elettrico |
Country Status (17)
Country | Link |
---|---|
KR (4) | KR880000106B1 (it) |
AT (3) | AT372796B (it) |
AU (3) | AU546641B2 (it) |
BR (3) | BR8104157A (it) |
CH (3) | CH654703A5 (it) |
DE (3) | DE3125789C2 (it) |
DK (3) | DK156356C (it) |
ES (3) | ES8204255A1 (it) |
FI (3) | FI79428C (it) |
GB (3) | GB2079113B (it) |
HK (3) | HK28485A (it) |
IT (3) | IT1137985B (it) |
MY (3) | MY8501148A (it) |
NL (3) | NL190214C (it) |
NO (3) | NO157399C (it) |
SE (3) | SE450985B (it) |
SG (3) | SG4385G (it) |
Families Citing this family (5)
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)
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 |
US3846719A (en) * | 1973-09-13 | 1974-11-05 | Dolby Laboratories Inc | Noise reduction systems |
GB1253031A (it) * | 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 |
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 (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 |
-
1981
- 1981-06-26 DK DK282581A patent/DK156356C/da not_active IP Right Cessation
- 1981-06-26 DK DK282981A patent/DK168806B1/da not_active IP Right Cessation
- 1981-06-26 DK DK282881A patent/DK172325B1/da not_active IP Right Cessation
- 1981-06-29 GB GB8119973A patent/GB2079113B/en not_active Expired
- 1981-06-29 GB GB8119972A patent/GB2079112B/en not_active Expired
- 1981-06-29 NO NO812217A patent/NO157399C/no not_active IP Right Cessation
- 1981-06-29 FI FI812025A patent/FI79428C/fi not_active IP Right Cessation
- 1981-06-29 ES ES503496A patent/ES8204255A1/es not_active Expired
- 1981-06-29 SE SE8104062A patent/SE450985B/sv not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103122,A patent/NL190214C/xx not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103124,A patent/NL189988C/xx not_active IP Right Cessation
- 1981-06-29 NO NO812216A patent/NO157398C/no not_active IP Right Cessation
- 1981-06-29 GB GB8119974A patent/GB2079114B/en not_active Expired
- 1981-06-29 FI FI812026A patent/FI76456C/fi not_active IP Right Cessation
- 1981-06-29 NO NO812218A patent/NO157400C/no not_active IP Right Cessation
- 1981-06-29 SE SE8104061A patent/SE447524B/sv not_active IP Right Cessation
- 1981-06-29 SE SE8104063A patent/SE447525B/sv not_active IP Right Cessation
- 1981-06-29 ES ES503493A patent/ES503493A0/es active Granted
- 1981-06-29 FI FI812024A patent/FI74368C/fi not_active IP Right Cessation
- 1981-06-29 NL NL8103123A patent/NL192652C/nl not_active IP Right Cessation
- 1981-06-29 ES ES503497A patent/ES8301084A1/es not_active Expired
- 1981-06-30 IT IT22650/81A patent/IT1137985B/it active
- 1981-06-30 AT AT0291581A patent/AT372796B/de not_active IP Right Cessation
- 1981-06-30 KR KR1019810002351A patent/KR880000106B1/ko active
- 1981-06-30 AU AU72365/81A patent/AU546641B2/en not_active Expired
- 1981-06-30 DE DE3125789A patent/DE3125789C2/de not_active Expired
- 1981-06-30 AU AU72394/81A patent/AU545125B2/en not_active Expired
- 1981-06-30 CH CH4293/81A patent/CH654703A5/de not_active IP Right Cessation
- 1981-06-30 KR KR1019810002352A patent/KR840002491B1/ko active
- 1981-06-30 BR BR8104157A patent/BR8104157A/pt not_active IP Right Cessation
- 1981-06-30 IT IT22651/81A patent/IT1137986B/it active
- 1981-06-30 CH CH4292/81A patent/CH662684A5/de not_active IP Right Cessation
- 1981-06-30 CH CH4294/81A patent/CH660653A5/de not_active IP Right Cessation
- 1981-06-30 AT AT0291681A patent/AT386911B/de not_active IP Right Cessation
- 1981-06-30 BR BR8104158A patent/BR8104158A/pt not_active IP Right Cessation
- 1981-06-30 AU AU72393/81A patent/AU544888B2/en not_active Expired
- 1981-06-30 AT AT0291481A patent/AT386304B/de not_active IP Right Cessation
- 1981-06-30 BR BR8104156A patent/BR8104156A/pt not_active IP Right Cessation
- 1981-06-30 DE DE19813125790 patent/DE3125790A1/de active Granted
- 1981-06-30 KR KR1019810002350A patent/KR880000105B1/ko active
- 1981-06-30 DE DE19813125788 patent/DE3125788A1/de active Granted
- 1981-06-30 IT IT22652/81A patent/IT1137987B/it active
-
1984
- 1984-09-19 KR KR1019840005735A patent/KR840002492B1/ko not_active IP Right Cessation
-
1985
- 1985-01-16 SG SG43/85A patent/SG4385G/en unknown
- 1985-01-16 SG SG45/85A patent/SG4585G/en unknown
- 1985-01-16 SG SG42/85A patent/SG4285G/en unknown
- 1985-04-04 HK HK284/85A patent/HK28485A/xx not_active IP Right Cessation
- 1985-04-04 HK HK282/85A patent/HK28285A/xx not_active IP Right Cessation
- 1985-04-04 HK HK283/85A patent/HK28385A/xx not_active IP Right Cessation
- 1985-12-30 MY MY1148/85A patent/MY8501148A/xx unknown
- 1985-12-30 MY MY1149/85A patent/MY8501149A/xx unknown
- 1985-12-30 MY MY1147/85A patent/MY8501147A/xx unknown
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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 |