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

Transmissionsanlæg til ved impulskodemodulation at overføre analogsignaler. Download PDF

Info

Publication number: DK142599B
Authority: DK; Denmark
Prior art keywords: analog; amplitude; frequency; digital converter; compressor
Prior art date: 1972-02-01

Application number

DK51573AA

Other languages

Danish (da)

English (en)

Other versions

DK142599C (xx

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.)

1972-02-01

Filing date

1973-01-31

Publication date

1980-11-24

1973-01-31 Application filed by Europ Handelsges Anst filed Critical Europ Handelsges Anst

1980-11-24 Publication of DK142599B publication Critical patent/DK142599B/da

1981-07-27 Application granted granted Critical

1981-07-27 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)
Analogue/Digital Conversion (AREA)
Transmitters (AREA)
Burglar Alarm Systems (AREA)
Emergency Alarm Devices (AREA)
Compression, Expansion, Code Conversion, And Decoders (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 (xx)	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 (xx)
JP (1)	JPS48104409A (xx)
AT (1)	AT352780B (xx)
BE (1)	BE794774A (xx)
CA (1)	CA987787A (xx)
CH (1)	CH542552A (xx)
DE (1)	DE2302360A1 (xx)
DK (1)	DK142599B (xx)
FR (1)	FR2170105B1 (xx)
GB (1)	GB1386923A (xx)
IT (1)	IT973069B (xx)
NL (1)	NL7301217A (xx)
NO (1)	NO140871C (xx)
SE (1)	SE376704B (xx)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5689195A (en) *	1979-12-20	1981-07-20	Sony Corp	Microphone device
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
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
AU2471595A (en) *	1994-05-09	1995-11-29	Link Plus Corporation	Companding system (lincompex) using pre- and de-emphasis
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
JP4286666B2 (ja) *	2002-01-25	2009-07-01	エヌエックスピービーヴィ	Ｐｃｍ信号から量子化雑音を除去するための方法及びユニット
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 (xx) *	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

1972
- 1972-02-01 CH CH141572A patent/CH542552A/de not_active IP Right Cessation
- 1972-12-20 AT AT1091072A patent/AT352780B/de active
- 1972-12-28 IT IT33762/72A patent/IT973069B/it active
1973
- 1973-01-18 DE DE2302360A patent/DE2302360A1/de not_active Ceased
- 1973-01-29 NL NL7301217A patent/NL7301217A/xx not_active Application Discontinuation
- 1973-01-30 SE SE7301295A patent/SE376704B/xx unknown
- 1973-01-31 FR FR7303454A patent/FR2170105B1/fr not_active Expired
- 1973-01-31 CA CA162,461A patent/CA987787A/en not_active Expired
- 1973-01-31 GB GB490773A patent/GB1386923A/en not_active Expired
- 1973-01-31 DK DK51573AA patent/DK142599B/da unknown
- 1973-01-31 BE BE794774A patent/BE794774A/xx unknown
- 1973-01-31 NO NO406/73A patent/NO140871C/no unknown
- 1973-02-01 JP JP48012467A patent/JPS48104409A/ja active Pending
1977
- 1977-09-19 US US05/834,707 patent/US4151469A/en not_active Expired - Lifetime

Also Published As

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

Similar Documents

Publication	Publication Date	Title
DK142599B (da)	1980-11-24	Transmissionsanlæg til ved impulskodemodulation at overføre analogsignaler.
US4610022A (en)	1986-09-02	Voice encoding and decoding device
US4751736A (en)	1988-06-14	Variable bit rate speech codec with backward-type prediction and quantization
US4455676A (en)	1984-06-19	Speech processing system including an amplitude level control circuit for digital processing
KR890702356A (ko)	1989-12-23	잡음 억제 시스템
WO2001037263A1 (en)	2001-05-25	Wideband audio transmission system
MY133057A (en)	2007-10-31	Methods and apparatus for improved echo suppression in communications systems
DK163699B (da)	1992-03-23	Fremgangsmaade til automatisk forstaerkningsstyring af et signal samt et kredsloeb til udoevelse af fremgangsmaaden
ES2150745T3 (es)	2000-12-01	Amplificador optico de ganancia variable y banda pasante constante, y sistema de compensacion automatica de las variaciones de las perdidas en un enlace optico que incluye tal amplificador.
US4493101A (en)	1985-01-08	Anti-howl back device
US5148491A (en)	1992-09-15	Automatic mixer apparatus
US4994811A (en)	1991-02-19	Sensitivity time control device
US3109066A (en)	1963-10-29	Sound control system
DK162557B (da)	1991-11-11	Hoereapparat
DK0493466T3 (da)	1994-06-06	System til reduktion af ordbredde ved behandling og transmission af videosignaler
ATE193797T1 (de)	2000-06-15	Hörgerät mit verbessertem perzentilgenerator
JPH0255428A (ja)	1990-02-23	マイクロ波ａｇｃ回路
US4266094A (en)	1981-05-05	Electronic speech processing system
US6067512A (en)	2000-05-23	Feedback-controlled speech processor normalizing peak level over vocal tract glottal pulse response waveform impulse and decay portions
JPH06177806A (ja)	1994-06-24	電力和一定自動利得制御回路
JP2555999B2 (ja)	1996-11-20	線形予測分析用ａ−ｄ変換装置
JP2953799B2 (ja)	1999-09-27	光受信回路
SU455477A1 (ru)	1974-12-30	Аналого-цифровой преобразователь
JPS56152348A (en)	1981-11-25	Photoelectric converting circuit
JPH07183811A (ja)	1995-07-21	ディジタル信号処理伝送回路