JPS57155841A - Noise reduction device - Google Patents

Noise reduction device

Info

Publication number
JPS57155841A
JPS57155841A JP4197681A JP4197681A JPS57155841A JP S57155841 A JPS57155841 A JP S57155841A JP 4197681 A JP4197681 A JP 4197681A JP 4197681 A JP4197681 A JP 4197681A JP S57155841 A JPS57155841 A JP S57155841A
Authority
JP
Japan
Prior art keywords
circuit
time constant
level
output
pass filter
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP4197681A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6234298B2 (enrdf_load_stackoverflow
Inventor
Yukinobu Ishigaki
Yutaka Haramoto
Kaoru Totsuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP4197681A priority Critical patent/JPS57155841A/ja
Priority to US06/354,863 priority patent/US4449106A/en
Priority to FR8203903A priority patent/FR2501936A1/fr
Priority to GB8206962A priority patent/GB2098031B/en
Priority to DE3208525A priority patent/DE3208525C2/de
Publication of JPS57155841A publication Critical patent/JPS57155841A/ja
Publication of JPS6234298B2 publication Critical patent/JPS6234298B2/ja
Granted legal-status Critical Current

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
    • H04B1/62—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 for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H04B1/64—Volume compression or expansion arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
JP4197681A 1981-03-10 1981-03-23 Noise reduction device Granted JPS57155841A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP4197681A JPS57155841A (en) 1981-03-23 1981-03-23 Noise reduction device
US06/354,863 US4449106A (en) 1981-03-10 1982-03-04 Noise reducing apparatus
FR8203903A FR2501936A1 (fr) 1981-03-10 1982-03-09 Appareil reducteur de bruit
GB8206962A GB2098031B (en) 1981-03-10 1982-03-10 Noise reducing apparatus
DE3208525A DE3208525C2 (de) 1981-03-10 1982-03-10 Rauschverminderungsvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4197681A JPS57155841A (en) 1981-03-23 1981-03-23 Noise reduction device

Publications (2)

Publication Number Publication Date
JPS57155841A true JPS57155841A (en) 1982-09-27
JPS6234298B2 JPS6234298B2 (enrdf_load_stackoverflow) 1987-07-25

Family

ID=12623221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4197681A Granted JPS57155841A (en) 1981-03-10 1981-03-23 Noise reduction device

Country Status (1)

Country Link
JP (1) JPS57155841A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62264733A (ja) * 1986-03-03 1987-11-17 レ−・ミルトン・ドルビ 音声信号ダイナミツクレンジ改変用過渡特性制御回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62264733A (ja) * 1986-03-03 1987-11-17 レ−・ミルトン・ドルビ 音声信号ダイナミツクレンジ改変用過渡特性制御回路

Also Published As

Publication number Publication date
JPS6234298B2 (enrdf_load_stackoverflow) 1987-07-25

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