FI76456C - Kretsanordning foer minskning av oeverbelastningseffekter hos inspelnings- eller transmissionsmedium i inspelnings- och transmissionssystem. - Google Patents
Kretsanordning foer minskning av oeverbelastningseffekter hos inspelnings- eller transmissionsmedium i inspelnings- och transmissionssystem. Download PDFInfo
- Publication number
- FI76456C FI76456C FI812026A FI812026A FI76456C FI 76456 C FI76456 C FI 76456C FI 812026 A FI812026 A FI 812026A FI 812026 A FI812026 A FI 812026A FI 76456 C FI76456 C FI 76456C
- Authority
- FI
- Finland
- Prior art keywords
- frequency
- expander
- recording
- compressor
- saturation
- Prior art date
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)
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 |
---|---|
FI812026L FI812026L (fi) | 1981-12-31 |
FI76456B FI76456B (fi) | 1988-06-30 |
FI76456C true FI76456C (fi) | 1988-10-10 |
Family
ID=26860115
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI812024A FI74368C (fi) | 1980-06-30 | 1981-06-29 | Kretsarrangemang foer modifiering av dynamiskt omraode. |
FI812026A FI76456C (fi) | 1980-06-30 | 1981-06-29 | Kretsanordning foer minskning av oeverbelastningseffekter hos inspelnings- eller transmissionsmedium i inspelnings- och transmissionssystem. |
FI812025A FI79428C (fi) | 1980-06-30 | 1981-06-29 | Naet foer daempning av mellanfrekvensmodulationsfenomen hos kompressorer, expandrar och brusdaempningssystem. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI812024A FI74368C (fi) | 1980-06-30 | 1981-06-29 | Kretsarrangemang foer modifiering av dynamiskt omraode. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI812025A FI79428C (fi) | 1980-06-30 | 1981-06-29 | Naet foer daempning av mellanfrekvensmodulationsfenomen hos kompressorer, expandrar och brusdaempningssystem. |
Country Status (17)
Country | Link |
---|---|
KR (4) | KR880000105B1 (de) |
AT (3) | AT372796B (de) |
AU (3) | AU544888B2 (de) |
BR (3) | BR8104157A (de) |
CH (3) | CH660653A5 (de) |
DE (3) | DE3125788A1 (de) |
DK (3) | DK172325B1 (de) |
ES (3) | ES503493A0 (de) |
FI (3) | FI74368C (de) |
GB (3) | GB2079114B (de) |
HK (3) | HK28485A (de) |
IT (3) | IT1137987B (de) |
MY (3) | MY8501148A (de) |
NL (3) | NL192652C (de) |
NO (3) | NO157400C (de) |
SE (3) | SE447525B (de) |
SG (3) | SG4385G (de) |
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 |
GB1253031A (de) * | 1968-01-10 | 1971-11-10 | ||
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 |
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 |
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 |
-
1981
- 1981-06-26 DK DK282881A patent/DK172325B1/da not_active IP Right Cessation
- 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
- 1981-06-29 NO NO812218A patent/NO157400C/no not_active IP Right Cessation
- 1981-06-29 GB GB8119974A patent/GB2079114B/en not_active Expired
- 1981-06-29 NO NO812217A patent/NO157399C/no not_active IP Right Cessation
- 1981-06-29 FI FI812024A patent/FI74368C/fi not_active IP Right Cessation
- 1981-06-29 FI FI812026A patent/FI76456C/fi not_active IP Right Cessation
- 1981-06-29 ES ES503493A patent/ES503493A0/es active Granted
- 1981-06-29 SE SE8104063A patent/SE447525B/sv not_active IP Right Cessation
- 1981-06-29 NO NO812216A patent/NO157398C/no not_active IP Right Cessation
- 1981-06-29 GB GB8119973A patent/GB2079113B/en not_active Expired
- 1981-06-29 NL NL8103123A patent/NL192652C/nl not_active IP Right Cessation
- 1981-06-29 GB GB8119972A patent/GB2079112B/en not_active Expired
- 1981-06-29 NL NLAANVRAGE8103122,A patent/NL190214C/xx not_active IP Right Cessation
- 1981-06-29 SE SE8104061A patent/SE447524B/sv not_active IP Right Cessation
- 1981-06-29 NL NLAANVRAGE8103124,A patent/NL189988C/xx not_active IP Right Cessation
- 1981-06-29 SE SE8104062A patent/SE450985B/sv not_active IP Right Cessation
- 1981-06-29 ES ES503497A patent/ES8301084A1/es not_active Expired
- 1981-06-29 ES ES503496A patent/ES503496A0/es active Granted
- 1981-06-29 FI FI812025A patent/FI79428C/fi not_active IP Right Cessation
- 1981-06-30 CH CH4294/81A patent/CH660653A5/de not_active IP Right Cessation
- 1981-06-30 AT AT0291581A patent/AT372796B/de not_active IP Right Cessation
- 1981-06-30 KR KR1019810002350A patent/KR880000105B1/ko active
- 1981-06-30 KR KR1019810002351A patent/KR880000106B1/ko active
- 1981-06-30 AU AU72393/81A patent/AU544888B2/en not_active Expired
- 1981-06-30 IT IT22652/81A patent/IT1137987B/it active
- 1981-06-30 AU AU72365/81A patent/AU546641B2/en not_active Expired
- 1981-06-30 BR BR8104157A patent/BR8104157A/pt not_active IP Right Cessation
- 1981-06-30 DE DE19813125788 patent/DE3125788A1/de active Granted
- 1981-06-30 BR BR8104158A patent/BR8104158A/pt not_active IP Right Cessation
- 1981-06-30 CH CH4293/81A patent/CH654703A5/de not_active IP Right Cessation
- 1981-06-30 DE DE3125789A patent/DE3125789C2/de not_active Expired
- 1981-06-30 AT AT0291681A patent/AT386911B/de not_active IP Right Cessation
- 1981-06-30 DE DE19813125790 patent/DE3125790A1/de active Granted
- 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 CH CH4292/81A patent/CH662684A5/de not_active IP Right Cessation
- 1981-06-30 KR KR1019810002352A patent/KR840002491B1/ko active
- 1981-06-30 AU AU72394/81A patent/AU545125B2/en not_active Expired
- 1981-06-30 IT IT22650/81A patent/IT1137985B/it active
- 1981-06-30 IT IT22651/81A patent/IT1137986B/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 SG42/85A patent/SG4285G/en unknown
- 1985-01-16 SG SG45/85A patent/SG4585G/en unknown
- 1985-04-04 HK HK284/85A patent/HK28485A/xx not_active IP Right Cessation
- 1985-04-04 HK HK283/85A patent/HK28385A/xx not_active IP Right Cessation
- 1985-04-04 HK HK282/85A patent/HK28285A/xx not_active IP Right Cessation
- 1985-12-30 MY MY1148/85A patent/MY8501148A/xx unknown
- 1985-12-30 MY MY1147/85A patent/MY8501147A/xx unknown
- 1985-12-30 MY MY1149/85A patent/MY8501149A/xx unknown
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4490691A (en) | Compressor-expander circuits and, circuit arrangements for modifying dynamic range, for suppressing mid-frequency modulation effects and for reducing media overload | |
US4538297A (en) | Aurally sensitized flat frequency response noise reduction compansion system | |
US5757938A (en) | High efficiency encoding device and a noise spectrum modifying device and method | |
EP0599132B1 (de) | System zur Verarbeitung von Audiosignalen | |
US4701722A (en) | Circuit arrangements for modifying dynamic range using series and parallel circuit techniques | |
EP0041310B1 (de) | Elektronische Schaltung zur Dynamik-Kompression oder -Expansion | |
US6498852B2 (en) | Automatic LFE audio signal derivation system | |
US20160344361A1 (en) | System and method for digital signal processing | |
JPS6144420B2 (de) | ||
JPS6130453B2 (de) | ||
US4363006A (en) | Noise reduction system having series connected variable frequency filters | |
FI76456C (fi) | Kretsanordning foer minskning av oeverbelastningseffekter hos inspelnings- eller transmissionsmedium i inspelnings- och transmissionssystem. | |
JPS6232849B2 (de) | ||
JPS63119327A (ja) | 信号の録音及び送信システムにおける媒体過負荷効果を低減させるエクスパンダ | |
US4683449A (en) | Noise reduction compression system controlled by compressed output components which are in-band | |
US5757939A (en) | Method for demonstrating sound quality differences between audio samples | |
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 | |
CA1219809A (en) | Audio compressors and expanders | |
KR840002901Y1 (ko) | 잡음 감쇄회로 | |
EP0152284A2 (de) | Rauschverringerung bei optischen Tonstreifensystemen | |
CA1201388A (en) | Improvements in audio compressors and expanders | |
JPS6040568A (ja) | オ−デイオ信号記録再生装置 | |
KR19980085044A (ko) | Ntsc/pal 겸용 시스템에서의 재생 오디오 레벨 자동 보정장치 | |
JP2000134050A (ja) | オーディオ装置 | |
JPS59144014A (ja) | 磁気記録または再生系の波形等化方式 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MA | Patent expired |
Owner name: DOLBY, RAY MILTON |