DK142599B - Transmissionsanlæg til ved impulskodemodulation at overføre analogsignaler. - Google Patents

Transmissionsanlæg til ved impulskodemodulation at overføre analogsignaler. Download PDF

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Publication number
DK142599B
DK142599B DK51573AA DK51573A DK142599B DK 142599 B DK142599 B DK 142599B DK 51573A A DK51573A A DK 51573AA DK 51573 A DK51573 A DK 51573A DK 142599 B DK142599 B DK 142599B
Authority
DK
Denmark
Prior art keywords
analog
amplitude
frequency
digital converter
compressor
Prior art date
Application number
DK51573AA
Other languages
Danish (da)
English (en)
Other versions
DK142599C (fr
Inventor
Peter Frutiger
Original Assignee
Europ Handelsges Anst
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 Europ Handelsges Anst filed Critical Europ Handelsges Anst
Publication of DK142599B publication Critical patent/DK142599B/da
Application granted granted Critical
Publication of DK142599C publication Critical patent/DK142599C/da

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
    • 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
    • H04B1/66—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 reducing bandwidth of signals; for improving efficiency of transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H04B14/046—Systems or methods for reducing noise or bandwidth
    • H04B14/048—Non linear compression or expansion

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Burglar Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmitters (AREA)
  • Analogue/Digital Conversion (AREA)
DK51573AA 1972-02-01 1973-01-31 Transmissionsanlæg til ved impulskodemodulation at overføre analogsignaler. DK142599B (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH141572A CH542552A (de) 1972-02-01 1972-02-01 Einrichtung mit einer Sende- und einer Empfangsstation zum Erzeugen, Umformen und Übertragen von Signalen
CH141572 1972-02-01

Publications (2)

Publication Number Publication Date
DK142599B true DK142599B (da) 1980-11-24
DK142599C DK142599C (fr) 1981-07-27

Family

ID=4209908

Family Applications (1)

Application Number Title Priority Date Filing Date
DK51573AA DK142599B (da) 1972-02-01 1973-01-31 Transmissionsanlæg til ved impulskodemodulation at overføre analogsignaler.

Country Status (14)

Country Link
US (1) US4151469A (fr)
JP (1) JPS48104409A (fr)
AT (1) AT352780B (fr)
BE (1) BE794774A (fr)
CA (1) CA987787A (fr)
CH (1) CH542552A (fr)
DE (1) DE2302360A1 (fr)
DK (1) DK142599B (fr)
FR (1) FR2170105B1 (fr)
GB (1) GB1386923A (fr)
IT (1) IT973069B (fr)
NL (1) NL7301217A (fr)
NO (1) NO140871C (fr)
SE (1) SE376704B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6019196B2 (ja) * 1979-12-20 1985-05-15 松下電器産業株式会社 マイクロフォン装置
JPS5689195A (en) * 1979-12-20 1981-07-20 Sony Corp Microphone device
JPS58117741A (ja) * 1981-12-30 1983-07-13 Sony Corp 信号処理回路
JPS59149431A (ja) * 1983-02-16 1984-08-27 Nec Corp 圧縮器
JPS60101769A (ja) * 1983-11-09 1985-06-05 Hitachi Ltd 信号伝送装置
GB2160394B (en) * 1984-05-02 1988-03-16 Pioneer Electronic Corp Noise reduction system
US5689692A (en) * 1992-12-23 1997-11-18 Honeywell Inc. Method and apparatus for decoding an encoded NRZ signal
WO1995031049A1 (fr) * 1994-05-09 1995-11-16 Linkplus Corporation Systeme de compression-extension (lincompex) utilisant une preaccentuation et une desaccentuation
US6405164B1 (en) 1999-12-30 2002-06-11 Engineering Consortium, Inc. Audio compression circuit and method
US6445233B1 (en) 1999-12-30 2002-09-03 The Engineering Consortium, Inc. Multiple time constant rectifier apparatus and method
WO2003063160A1 (fr) * 2002-01-25 2003-07-31 Koninklijke Philips Electronics N.V. Procede et unite pour soustraire un bruit de quantification d'un signal mic
DE102004036154B3 (de) * 2004-07-26 2005-12-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur robusten Klassifizierung von Audiosignalen sowie Verfahren zu Einrichtung und Betrieb einer Audiosignal-Datenbank sowie Computer-Programm

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071826A (en) * 1961-04-27 1978-01-31 The United States Of America As Represented By The Secretary Of The Navy Clipped speech channel coded communication system
NL6712082A (fr) * 1967-09-02 1969-03-04
DE1762775C3 (de) * 1967-09-02 1979-10-18 N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) System zur Übertragung analoger Signale mittels Pulscodemodulation

Also Published As

Publication number Publication date
SE376704B (fr) 1975-06-02
NL7301217A (fr) 1973-08-03
CA987787A (en) 1976-04-20
IT973069B (it) 1974-06-10
NO140871C (no) 1979-11-28
AT352780B (de) 1979-10-10
BE794774A (fr) 1973-05-16
FR2170105B1 (fr) 1980-03-28
NO140871B (no) 1979-08-20
ATA1091072A (de) 1979-03-15
US4151469A (en) 1979-04-24
DE2302360A1 (de) 1973-08-09
FR2170105A1 (fr) 1973-09-14
GB1386923A (en) 1975-03-12
JPS48104409A (fr) 1973-12-27
CH542552A (de) 1973-09-30
DK142599C (fr) 1981-07-27

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