BR8501854A - Aparelho para reduzir ruido em sinais de audio - Google Patents

Aparelho para reduzir ruido em sinais de audio

Info

Publication number: BR8501854A
Authority: BR; Brazil
Prior art keywords: appliance; audio signals; reduce noise; noise; reduce
Prior art date: 1984-04-20

Application number

BR8501854A

Other languages

English (en)

Inventor

Shuzo Hitotsumachi

Original Assignee

Matsushita Electric Industrial Co Ltd

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.)

1984-04-20

Filing date

1985-04-18

Publication date

1985-12-17

1984-04-20 Priority claimed from JP59080422A external-priority patent/JPS60223307A/ja

1984-09-07 Priority claimed from JP59188365A external-priority patent/JPS6165627A/ja

1985-04-18 Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd

1985-12-17 Publication of BR8501854A publication Critical patent/BR8501854A/pt

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/02—Analogue recording or reproducing
- G11B20/025—Error detection or correction
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present
- H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present
- H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Noise Elimination (AREA)

BR8501854A 1984-04-20 1985-04-18 Aparelho para reduzir ruido em sinais de audio BR8501854A (pt)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP59080422A JPS60223307A (ja)	1984-04-20	1984-04-20	雑音低減回路
JP59188365A JPS6165627A (ja)	1984-09-07	1984-09-07	雑音低減装置

Publications (1)

Publication Number	Publication Date
BR8501854A true BR8501854A (pt)	1985-12-17

Family

ID=26421432

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR8501854A BR8501854A (pt)	1984-04-20	1985-04-18	Aparelho para reduzir ruido em sinais de audio

Country Status (7)

Country	Link
US (1)	US4648118A (pt)
EP (1)	EP0159042B1 (pt)
KR (1)	KR900005064B1 (pt)
AU (1)	AU562044B2 (pt)
BR (1)	BR8501854A (pt)
CA (1)	CA1229799A (pt)
DE (1)	DE3584686D1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0337025B1 (en) *	1988-04-08	1993-10-20	Hazeltine Corporation	Beamforming/null-steering adaptive array
US4864561A (en) *	1988-06-20	1989-09-05	American Telephone And Telegraph Company	Technique for improved subjective performance in a communication system using attenuated noise-fill
US5057785A (en) *	1990-01-23	1991-10-15	International Business Machines Corporation	Method and circuitry to suppress additive disturbances in data channels
US5357150A (en) *	1992-11-06	1994-10-18	International Business Machines Corporation	Defect tolerant envelope follower

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3374435A (en) *	1965-07-29	1968-03-19	Bell Telephone Labor Inc	Reduction of the effect of impulse noise bursts
US4184178A (en) *	1972-11-30	1980-01-15	Basf Aktiengesellschaft	Drop-out compensator for sound reproducing apparatus during tape reversal
US4076969A (en) *	1975-04-07	1978-02-28	Singer & Singer	Impulse noise reduction system
JPS5943852B2 (ja) *	1977-02-08	1984-10-25	株式会社日立製作所	信号ホ−ルド回路
JPS5514734A (en) *	1978-07-17	1980-02-01	Nec Corp	Pulse noise elimination circuit
US4311963A (en) *	1978-07-18	1982-01-19	Matsushita Electric Industrial Co., Ltd.	Noise pulse suppressing system
US4268793A (en) *	1978-10-12	1981-05-19	Kiyoshi Amazawa	Noise eliminating circuit
CA1144081A (en) *	1979-04-27	1983-04-05	Sadao Kondo	Noise removing apparatus
US4329714A (en) *	1980-11-26	1982-05-11	Rca Corporation	Audio distortion eliminator
EP0063737B1 (de) *	1981-04-23	1986-03-19	TELEFUNKEN Fernseh und Rundfunk GmbH	Videorecorder mit verbesserter Tonwiedergabe
JPS581829A (ja) *	1981-05-06	1983-01-07	Sony Corp	ビデオテ−プレコ−ダ
JPS586506A (ja) *	1981-06-30	1983-01-14	Pioneer Video Corp	再生信号の時間軸補正装置
JPS58121882A (ja) *	1982-01-16	1983-07-20	Sony Corp	映像及び音声信号再生装置
EP0099760B1 (en) *	1982-07-21	1988-06-29	Victor Company Of Japan, Limited	Circuit for reconstructing noise-affected signals
US4495643A (en) *	1983-03-31	1985-01-22	Orban Associates, Inc.	Audio peak limiter using Hilbert transforms
DE3929030A1 (de) *	1989-09-01	1991-03-07	Boehringer Mannheim Gmbh	Verfahren zur vermehrung von nukleinsaeuren

1985
- 1985-04-10 US US06/721,646 patent/US4648118A/en not_active Expired - Fee Related
- 1985-04-11 AU AU41026/85A patent/AU562044B2/en not_active Ceased
- 1985-04-15 CA CA000479194A patent/CA1229799A/en not_active Expired
- 1985-04-16 KR KR1019850002546A patent/KR900005064B1/ko not_active Expired
- 1985-04-18 BR BR8501854A patent/BR8501854A/pt not_active IP Right Cessation
- 1985-04-19 EP EP85104736A patent/EP0159042B1/en not_active Expired - Lifetime
- 1985-04-19 DE DE8585104736T patent/DE3584686D1/de not_active Expired - Lifetime

Also Published As

Publication number	Publication date
AU562044B2 (en)	1987-05-28
KR850007515A (ko)	1985-12-04
EP0159042A3 (en)	1988-06-08
CA1229799A (en)	1987-12-01
KR900005064B1 (ko)	1990-07-19
AU4102685A (en)	1985-10-24
EP0159042A2 (en)	1985-10-23
EP0159042B1 (en)	1991-11-21
US4648118A (en)	1987-03-03
DE3584686D1 (de)	1992-01-02

Publication	Publication Date	Title
DE2962606D1 (en)	1982-06-09	Noise reduction in electrical signals
GB2163388B (en)	1988-11-02	Improvements in or relating to noise insulation materials
GB2172470B (en)	1989-01-11	Improvement relating to noise reduction arrangements
DK158398C (da)	1990-10-22	Gulvspaanplade
BR8500927A (pt)	1985-10-22	Aperfeicoamento em transmissao
GB2003360B (en)	1982-01-27	Noise reduction in electrical signals
DK295685D0 (da)	1985-06-28	Moebel
EP0150560A3 (en)	1987-02-04	Low noise signal generator
ATA905084A (de)	1989-08-15	Desintegrator
BR8501854A (pt)	1985-12-17	Aparelho para reduzir ruido em sinais de audio
GB8404371D0 (en)	1984-03-28	Reducing noise in television signal
ES286760Y (es)	1986-07-16	Mueble de oficina
BR8303651A (pt)	1984-04-24	Aparelho de radar pobre em ruidos
RO85060A2 (ro)	1984-08-17	Atenuator de zgomot
AT381632B (de)	1986-11-10	Moebelstueck
ES285865Y (es)	1986-06-01	Mueble de frigorifico
BR8307194A (pt)	1984-03-13	Aperfeicoamento em peca de mobiliario
JPS5646300A (en)	1981-04-27	Reducing noise added to voice
RO91218A2 (ro)	1987-07-30	Plita de bucatarie
AT384157B (de)	1987-10-12	Moebel
FR2568761B3 (fr)	1986-11-07	Meuble frigorifique
AR230159A1 (es)	1984-03-01	Conjunto de elementos para conformar disposiciones de moblaje
BR6401013U (pt)	1986-02-12	Disposicao construtiva em moveis
AR231380A1 (es)	1984-11-30	Mejoras en muebles
ES282844Y (es)	1986-06-16	Mueble elevable

Legal Events

Date	Code	Title	Description
2008-07-15	B21A	Patent or certificate of addition expired [chapter 21.1 patent gazette]	Free format text: PATENTE EXTINTA EM 18/04/2000