IT953872B - Circuito per la riduzione del rumore - Google Patents

Circuito per la riduzione del rumore

Info

Publication number
IT953872B
IT953872B IT23749/72A IT2374972A IT953872B IT 953872 B IT953872 B IT 953872B IT 23749/72 A IT23749/72 A IT 23749/72A IT 2374972 A IT2374972 A IT 2374972A IT 953872 B IT953872 B IT 953872B
Authority
IT
Italy
Prior art keywords
noise
reduction
circuit
Prior art date
Application number
IT23749/72A
Other languages
English (en)
Original Assignee
Philips Nv
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.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of IT953872B publication Critical patent/IT953872B/it

Links

Classifications

    • 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
IT23749/72A 1971-05-04 1972-04-29 Circuito per la riduzione del rumore IT953872B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7106040.A NL163388C (nl) 1971-05-04 1971-05-04 Ruisonderdrukkingsschakeling.

Publications (1)

Publication Number Publication Date
IT953872B true IT953872B (it) 1973-08-10

Family

ID=19813073

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23749/72A IT953872B (it) 1971-05-04 1972-04-29 Circuito per la riduzione del rumore

Country Status (10)

Country Link
US (1) US3818362A (it)
JP (1) JPS5238691B1 (it)
AT (1) AT334107B (it)
AU (1) AU465461B2 (it)
CA (1) CA946485A (it)
DE (1) DE2219794C3 (it)
FR (1) FR2135631B1 (it)
GB (1) GB1393152A (it)
IT (1) IT953872B (it)
NL (1) NL163388C (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US29529A (en) * 1860-08-07 Machine eoe
BE793740A (fr) * 1972-01-08 1973-05-02 Akai Electric Systeme d'enregistrement magnetique
US3940709A (en) * 1974-12-19 1976-02-24 Ampex Corporation Equalization circuit
US4110784A (en) * 1976-08-30 1978-08-29 Rca Corporation Noise reduction apparatus
NL7609730A (nl) * 1976-09-01 1978-03-03 Novanex Automation Nv Versterker.
DE2655325C2 (de) * 1976-12-07 1984-01-26 Saba Gmbh, 7730 Villingen-Schwenningen Magnetbandgerät mit einer im Wiedergabebetrieb wirksamen Rauschunterdrückungs-Schaltung
JPS5912850Y2 (ja) * 1978-03-06 1984-04-17 ホーチキ株式会社 チヤンネルレベル調整器
CA1188384A (en) * 1981-12-29 1985-06-04 Masayuki Katakura Noise reduction circuit
JPS5972871A (ja) * 1982-10-20 1984-04-24 Hitachi Ltd 固体ビデオカメラの低輝度時雑音低減装置
US4703507A (en) * 1984-04-05 1987-10-27 Holden Thomas W Noise reduction system
US4894566A (en) * 1988-10-18 1990-01-16 Rush Michael J Noise reduction circuit
KR100213073B1 (ko) * 1996-11-09 1999-08-02 윤종용 재생 오디오 신호의 주파수 특성 보상 장치
CN109191387B (zh) * 2018-07-20 2021-09-24 河南师范大学 一种基于巴特沃斯滤波器的红外图像去噪方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270213A (en) * 1963-10-21 1966-08-30 Princeton Applied Res Corp Frequency responsive network
GB1111863A (en) * 1965-08-07 1968-05-01 English Electric Co Ltd Arrangements for filtering signals
GB1120541A (en) * 1965-08-11 1968-07-17 Dolby Ray Milton Improvements in noise reduction systems
US3631365A (en) * 1968-11-01 1971-12-28 Dolby Laboratories Inc Signal compressors and expanders
BE753495A (fr) * 1969-07-21 1970-12-16 Dolby Laboratories Inc Filtres limiteurs perfectionnes pour systemes attenuateurs de bruit. (
US3548334A (en) * 1969-07-28 1970-12-15 Matsushita Electric Ind Co Ltd Noise reduction circuit and system

Also Published As

Publication number Publication date
FR2135631B1 (it) 1973-07-13
DE2219794A1 (de) 1972-11-30
DE2219794B2 (it) 1974-05-02
US3818362A (en) 1974-06-18
AU465461B2 (en) 1975-09-25
NL163388B (nl) 1980-03-17
AT334107B (de) 1976-12-27
CA946485A (en) 1974-04-30
FR2135631A1 (it) 1972-12-22
ATA383572A (de) 1976-04-15
NL163388C (nl) 1980-08-15
JPS5238691B1 (it) 1977-09-30
GB1393152A (en) 1975-05-07
NL7106040A (it) 1972-11-07
DE2219794C3 (de) 1974-12-05
AU4171572A (en) 1973-11-08

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