NL186732C - Ruisreduktieschakeling voor stereosignalen. - Google Patents
Ruisreduktieschakeling voor stereosignalen.Info
- Publication number
- NL186732C NL186732C NLAANVRAGE7800871,A NL7800871A NL186732C NL 186732 C NL186732 C NL 186732C NL 7800871 A NL7800871 A NL 7800871A NL 186732 C NL186732 C NL 186732C
- Authority
- NL
- Netherlands
- Prior art keywords
- noise reduction
- reduction circuit
- stereo signals
- stereo
- signals
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1646—Circuits adapted for the reception of stereophonic signals
- H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
- H04B1/1669—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal
- H04B1/1676—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal of the sum or difference signal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Stereo-Broadcasting Methods (AREA)
- Stereophonic System (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NLAANVRAGE7800871,A NL186732C (nl) | 1978-01-25 | 1978-01-25 | Ruisreduktieschakeling voor stereosignalen. |
US05/972,587 US4221928A (en) | 1978-01-25 | 1978-12-22 | Noise reduction circuit for stereo signals |
GB7902165A GB2013455B (en) | 1978-01-25 | 1979-01-22 | Stereo information processing circuit |
JP566679A JPS54110802A (en) | 1978-01-25 | 1979-01-23 | Stereophonic signal noise reducing circuit |
DE19792902398 DE2902398A1 (de) | 1978-01-25 | 1979-01-23 | Rauschverringerungsschaltung fuer stereo-signale |
FR7901786A FR2415924A1 (fr) | 1978-01-25 | 1979-01-24 | Circuit reducteur de bruit pour signaux stereo |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NLAANVRAGE7800871,A NL186732C (nl) | 1978-01-25 | 1978-01-25 | Ruisreduktieschakeling voor stereosignalen. |
Publications (3)
Publication Number | Publication Date |
---|---|
NL7800871A NL7800871A (nl) | 1979-07-27 |
NL186732B NL186732B (nl) | 1990-09-03 |
NL186732C true NL186732C (nl) | 1991-02-01 |
Family
ID=19830224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NLAANVRAGE7800871,A NL186732C (nl) | 1978-01-25 | 1978-01-25 | Ruisreduktieschakeling voor stereosignalen. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4221928A (nl) |
JP (1) | JPS54110802A (nl) |
DE (1) | DE2902398A1 (nl) |
FR (1) | FR2415924A1 (nl) |
GB (1) | GB2013455B (nl) |
NL (1) | NL186732C (nl) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57121345A (en) * | 1981-01-20 | 1982-07-28 | Sanyo Electric Co Ltd | Pulse noise eliminating circuit |
US4457012A (en) * | 1982-06-03 | 1984-06-26 | Carver R W | FM Stereo apparatus and method |
US4574389A (en) * | 1983-07-15 | 1986-03-04 | Larry Schotz | Stereophonic receiver having a noise reduction control circuit |
JPS6149532A (ja) * | 1984-08-17 | 1986-03-11 | Pioneer Electronic Corp | セパレ−シヨンコントロ−ル回路 |
US4696044A (en) * | 1986-09-29 | 1987-09-22 | Waller Jr James K | Dynamic noise reduction with logarithmic control |
DE19542738A1 (de) * | 1995-11-16 | 1997-05-22 | Bayerische Motoren Werke Ag | Schaltanordnung für mobile Rundfunkempfänger |
JP3483695B2 (ja) * | 1996-03-14 | 2004-01-06 | 株式会社リコー | 音声通信装置 |
EP1284542A1 (en) * | 2001-08-12 | 2003-02-19 | Semiconductor Ideas to The Market BV | Stereodecoder |
US7738664B2 (en) * | 2003-10-07 | 2010-06-15 | Kddi Corporation | Apparatus for fault detection for parallelly transmitted audio signals and apparatus for delay difference detection and adjustment for parallelly transmitted audio signals |
EP1973014B1 (de) * | 2007-03-19 | 2011-09-28 | Siemens Aktiengesellschaft | Einrichtung und Verfahren zur automatischen Erkennung und Unterscheidung von an eine zweikanalige Sicherheitskombination angeschlossenen ein- oder zweikanaligen elektronischen Sensoren |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1208541A (fr) * | 1957-06-19 | 1960-02-24 | Emi Ltd | Perfectionnements aux dispositifs de transmission du son stéréophonique |
US3264414A (en) * | 1963-05-28 | 1966-08-02 | Rca Corp | Stereophonic fm receivers |
US3539729A (en) * | 1967-06-12 | 1970-11-10 | Scott Inc H H | Apparatus for reducing interference in the transmission of electric signals |
US3823268A (en) * | 1972-06-07 | 1974-07-09 | Mc Intosh Labor Inc | Dynamic stereo separation control |
GB1450533A (en) * | 1972-11-08 | 1976-09-22 | Ferrograph Co Ltd | Stereo sound reproducing apparatus |
US3825697A (en) * | 1973-07-27 | 1974-07-23 | Gen Motors Corp | Phase-lock-loop fm-stereo decoder including stereophonic/monophonic blend system for reducing audio distortion |
DE2338482B2 (de) * | 1973-07-28 | 1975-05-22 | Koerting Radio Werke Gmbh, 8211 Grassau | Schaltungsanordnung zur Rauschreduzierung einer nach dem FCC-System ausgestrahlten Stereosendung auf der Empfängerseite, kombiniert mit einer Mono-Stereo-Anzeige |
CH559482A5 (nl) * | 1973-12-27 | 1975-02-28 | Rediffusion Ag | |
DE2410430C2 (de) * | 1974-03-05 | 1985-10-10 | Telefunken electronic GmbH, 7100 Heilbronn | Schaltungsanordnung zur Erzielung einer rauscharmen Stereowiedergabe |
US4037057A (en) * | 1974-08-01 | 1977-07-19 | Nippon Gakki Seizo Kabushiki Kaisha | Noise-cancelling apparatus for FM stereo receiver |
US4029906A (en) * | 1975-04-18 | 1977-06-14 | Sansui Electric Co., Ltd. | Automatic noise reduction system of FM stereo receiver |
-
1978
- 1978-01-25 NL NLAANVRAGE7800871,A patent/NL186732C/nl not_active IP Right Cessation
- 1978-12-22 US US05/972,587 patent/US4221928A/en not_active Expired - Lifetime
-
1979
- 1979-01-22 GB GB7902165A patent/GB2013455B/en not_active Expired
- 1979-01-23 DE DE19792902398 patent/DE2902398A1/de active Granted
- 1979-01-23 JP JP566679A patent/JPS54110802A/ja active Granted
- 1979-01-24 FR FR7901786A patent/FR2415924A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS633520B2 (nl) | 1988-01-25 |
DE2902398A1 (de) | 1979-07-26 |
JPS54110802A (en) | 1979-08-30 |
GB2013455A (en) | 1979-08-08 |
US4221928A (en) | 1980-09-09 |
GB2013455B (en) | 1982-05-19 |
NL7800871A (nl) | 1979-07-27 |
FR2415924A1 (fr) | 1979-08-24 |
DE2902398C2 (nl) | 1987-10-15 |
NL186732B (nl) | 1990-09-03 |
FR2415924B1 (nl) | 1984-04-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A1B | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
A85 | Still pending on 85-01-01 | ||
V1 | Lapsed because of non-payment of the annual fee |