JPH0130207B2 - - Google Patents

Info

Publication number
JPH0130207B2
JPH0130207B2 JP56073556A JP7355681A JPH0130207B2 JP H0130207 B2 JPH0130207 B2 JP H0130207B2 JP 56073556 A JP56073556 A JP 56073556A JP 7355681 A JP7355681 A JP 7355681A JP H0130207 B2 JPH0130207 B2 JP H0130207B2
Authority
JP
Japan
Prior art keywords
frequency
audio signal
circuit
compression
expansion
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.)
Expired
Application number
JP56073556A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57190478A (en
Inventor
Shigeyuki Ito
Yoshizumi Wataya
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.)
Hitachi Ltd
Original Assignee
Hitachi 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.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56073556A priority Critical patent/JPS57190478A/ja
Publication of JPS57190478A publication Critical patent/JPS57190478A/ja
Publication of JPH0130207B2 publication Critical patent/JPH0130207B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
JP56073556A 1981-05-18 1981-05-18 Sound noise suppressing circuit Granted JPS57190478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56073556A JPS57190478A (en) 1981-05-18 1981-05-18 Sound noise suppressing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56073556A JPS57190478A (en) 1981-05-18 1981-05-18 Sound noise suppressing circuit

Related Child Applications (3)

Application Number Title Priority Date Filing Date
JP58195970A Division JPS59131280A (ja) 1983-10-21 1983-10-21 音声雑音抑圧回路
JP12669490A Division JPH0316003A (ja) 1990-05-18 1990-05-18 音声雑音抑圧装置
JP12669590A Division JPH0316004A (ja) 1990-05-18 1990-05-18 音声雑音抑圧装置

Publications (2)

Publication Number Publication Date
JPS57190478A JPS57190478A (en) 1982-11-24
JPH0130207B2 true JPH0130207B2 (en]) 1989-06-16

Family

ID=13521632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56073556A Granted JPS57190478A (en) 1981-05-18 1981-05-18 Sound noise suppressing circuit

Country Status (1)

Country Link
JP (1) JPS57190478A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046139A (ja) * 1983-08-24 1985-03-12 Nippon Telegr & Teleph Corp <Ntt> コンパンダ回路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5166815A (en]) * 1974-12-05 1976-06-09 Matsushita Electric Ind Co Ltd
JPS5265616A (en) * 1975-11-26 1977-05-31 Toshiba Corp Signal recording and reproducing unit
US4048654A (en) * 1976-02-18 1977-09-13 Telesonics, Inc. Stereophonic television sound transmission system
JPS5922282B2 (ja) * 1976-12-24 1984-05-25 松下電器産業株式会社 磁気記録再生方式
JPS53106109A (en) * 1977-02-28 1978-09-14 Sony Corp Vedio signal transmitting circuit
JPS5446404A (en) * 1977-09-20 1979-04-12 Sanyo Electric Co Ltd Noise reduction device

Also Published As

Publication number Publication date
JPS57190478A (en) 1982-11-24

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