GB1392986A - Compressing and/or expanding circuit - Google Patents

Compressing and/or expanding circuit

Info

Publication number
GB1392986A
GB1392986A GB1887572A GB1887572A GB1392986A GB 1392986 A GB1392986 A GB 1392986A GB 1887572 A GB1887572 A GB 1887572A GB 1887572 A GB1887572 A GB 1887572A GB 1392986 A GB1392986 A GB 1392986A
Authority
GB
United Kingdom
Prior art keywords
circuit
control
control element
expandor
compressor
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
GB1887572A
Other languages
English (en)
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
Publication of GB1392986A publication Critical patent/GB1392986A/en
Expired 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Noise Elimination (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
GB1887572A 1971-04-24 1972-04-24 Compressing and/or expanding circuit Expired GB1392986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46026958A JPS5227504B1 (enExample) 1971-04-24 1971-04-24

Publications (1)

Publication Number Publication Date
GB1392986A true GB1392986A (en) 1975-05-07

Family

ID=12207651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1887572A Expired GB1392986A (en) 1971-04-24 1972-04-24 Compressing and/or expanding circuit

Country Status (3)

Country Link
US (1) US3769612A (enExample)
JP (1) JPS5227504B1 (enExample)
GB (1) GB1392986A (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934202A (en) * 1974-03-25 1976-01-20 Telesonic Systems, Inc. Tour guide system including means for noise and crosstalk suppression
DE2542745C2 (de) * 1975-09-25 1983-06-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verstärker mit veränderbarem Übertragungsmaß, insbesondere für ein Kompander-System
US3973081A (en) * 1975-09-12 1976-08-03 Trw Inc. Feedback residue compression for digital speech systems
JPS5327010A (en) * 1976-08-25 1978-03-13 Sony Corp Signal tran smitter
DE2744249B2 (de) * 1977-10-01 1980-01-31 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zur wahlweisen Dynamik-Kompression oder -Expansion
US4170720A (en) * 1978-03-03 1979-10-09 Killion Mead C AGC circuit particularly for a hearing aid
US4647876A (en) * 1985-02-25 1987-03-03 Waller Jr James Extended response dynamic noise reduction system
US4859877A (en) * 1988-01-04 1989-08-22 Gte Laboratories Incorporated Bidirectional digital signal transmission system
RU2449451C1 (ru) 2011-04-01 2012-04-27 Закрытое Акционерное Общество "Нефтьстальконструкция" Система вентиляции ротора электрической машины

Also Published As

Publication number Publication date
JPS5227504B1 (enExample) 1977-07-20
US3769612A (en) 1973-10-30

Similar Documents

Publication Publication Date Title
GB1392986A (en) Compressing and/or expanding circuit
US4370681A (en) Gain control circuit for noise reduction system
US4182993A (en) Signal amplitude compression system
GB1526636A (en) Circuit for automatic dynamic compression or expansion
US3548323A (en) Non-linear mathematical signal conditioning system
US4224581A (en) Compander system having limiter in compressor and expander
KR890015517A (ko) 가변 이득 엔코더 장치 및 방법
US3735290A (en) Compressing and/or expanding system comprising fixed and variable frequency characteristic changing circuits
GB1301168A (en) Digital/analog multiplier
US4278945A (en) Circuit for the generation of a control variable for the control of the transfer constant of electronically actuable amplifying and attenuating members
GB829566A (en) Ferroelectric systems
CA1171921A (en) Level detecting circuit
JPS6339125B2 (enExample)
US3946249A (en) Signal control circuit
US3624491A (en) Dynamic range compressor
US3513404A (en) Mode-switchable amplifier stabilized against drift
US3365712A (en) Digitally controlled attenuator
GB1431481A (en) Circuit arrangement having an amplitude and frequency dependent transfer function
US3558933A (en) Voltage variable delay line termination
GB1490257A (en) Multi-stage differential amplifier circuit with means for compensating the temperature drift of a constant current source transistor
US3397285A (en) Electronic apparatus
US3218620A (en) Two track reproducing system with two recorded levels utilizing a variable impedance element
JPS6339164B2 (enExample)
US4053797A (en) Receive amplifier for pam signals
US3978423A (en) Dynamic expander

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee