NO882137L - Anordning for kompandering og feilutligning av digitale audiosignaler. - Google Patents

Anordning for kompandering og feilutligning av digitale audiosignaler.

Info

Publication number
NO882137L
NO882137L NO88882137A NO882137A NO882137L NO 882137 L NO882137 L NO 882137L NO 88882137 A NO88882137 A NO 88882137A NO 882137 A NO882137 A NO 882137A NO 882137 L NO882137 L NO 882137L
Authority
NO
Norway
Prior art keywords
digital audio
audio signal
samples
error
bit
Prior art date
Application number
NO88882137A
Other languages
English (en)
Other versions
NO882137D0 (no
NO176040C (no
NO176040B (no
Inventor
Gordon Kent Walker
Ron D Katznelson
Paul Moroney
Karl E Moerder
Original Assignee
Ma Com Gov Systems
Cable Home Communication Corp
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 Ma Com Gov Systems, Cable Home Communication Corp filed Critical Ma Com Gov Systems
Publication of NO882137D0 publication Critical patent/NO882137D0/no
Publication of NO882137L publication Critical patent/NO882137L/no
Priority to NO19940381A priority Critical patent/NO314239B1/no
Publication of NO176040B publication Critical patent/NO176040B/no
Publication of NO176040C publication Critical patent/NO176040C/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3053—Block-companding PCM systems

Landscapes

  • Theoretical Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Error Detection And Correction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Amplifiers (AREA)
NO882137A 1986-09-19 1988-05-16 Anordning for behandling av audiosignaler NO176040C (no)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO19940381A NO314239B1 (no) 1986-09-19 1994-02-07 Anordning for behandling av audiosignaler

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US90977686A 1986-09-19 1986-09-19
US07/091,911 US4809274A (en) 1986-09-19 1987-09-04 Digital audio companding and error conditioning
PCT/US1987/002377 WO1988002201A1 (en) 1986-09-19 1987-09-16 Digital audio companding and error conditioning

Publications (4)

Publication Number Publication Date
NO882137D0 NO882137D0 (no) 1988-05-16
NO882137L true NO882137L (no) 1988-07-18
NO176040B NO176040B (no) 1994-10-10
NO176040C NO176040C (no) 1995-01-18

Family

ID=26784471

Family Applications (2)

Application Number Title Priority Date Filing Date
NO882137A NO176040C (no) 1986-09-19 1988-05-16 Anordning for behandling av audiosignaler
NO19940381A NO314239B1 (no) 1986-09-19 1994-02-07 Anordning for behandling av audiosignaler

Family Applications After (1)

Application Number Title Priority Date Filing Date
NO19940381A NO314239B1 (no) 1986-09-19 1994-02-07 Anordning for behandling av audiosignaler

Country Status (10)

Country Link
US (1) US4809274A (no)
EP (1) EP0284627B1 (no)
JP (1) JPH0685509B2 (no)
AT (1) ATE81572T1 (no)
AU (1) AU601513B2 (no)
CA (1) CA1299751C (no)
DE (1) DE3782245T2 (no)
DK (1) DK175140B1 (no)
NO (2) NO176040C (no)
WO (1) WO1988002201A1 (no)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965825A (en) 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods
US5101432A (en) * 1986-03-17 1992-03-31 Cardinal Encryption Systems Ltd. Signal encryption
CA1309665C (en) * 1987-06-27 1992-11-03 Kenzo Akagiri Amplitude compressing/expanding circuit
JPH01166632A (ja) * 1987-12-22 1989-06-30 Mitsubishi Electric Corp ディジタル信号の復号方法及びその回路
JP2624299B2 (ja) * 1988-06-09 1997-06-25 株式会社日立製作所 加速演算回路
SE464271B (sv) * 1990-03-23 1991-03-25 Televerket Foerfarande och anordning foer kryptering/dekryptering av digitalt flerljud i teve
US5241689A (en) * 1990-12-07 1993-08-31 Ericsson Ge Mobile Communications Inc. Digital signal processor audio compression in an RF base station system
JPH0581774A (ja) * 1991-09-20 1993-04-02 Olympus Optical Co Ltd 情報記録再生装置
DE69231369T2 (de) * 1991-09-30 2001-03-29 Sony Corp., Tokio/Tokyo Verfahren und Einrichtung zur Audiodatenkompression
US5805770A (en) * 1993-11-04 1998-09-08 Sony Corporation Signal encoding apparatus, signal decoding apparatus, recording medium, and signal encoding method
CN1111959C (zh) * 1993-11-09 2003-06-18 索尼公司 量化装置、量化方法、高效率编码装置、高效率编码方法、解码装置和高效率解码装置
US5615222A (en) * 1994-02-04 1997-03-25 Pacific Communication Sciences, Inc. ADPCM coding and decoding techniques for personal communication systems
DE69533259T2 (de) * 1995-05-03 2005-08-18 Sony Corp. Nichtlineares quantisieren eines informationssignales
US5710781A (en) * 1995-06-02 1998-01-20 Ericsson Inc. Enhanced fading and random pattern error protection for dynamic bit allocation sub-band coding
JP3189660B2 (ja) * 1996-01-30 2001-07-16 ソニー株式会社 信号符号化方法
US8908872B2 (en) * 1996-06-07 2014-12-09 That Corporation BTSC encoder
US5796842A (en) * 1996-06-07 1998-08-18 That Corporation BTSC encoder
US5737434A (en) * 1996-08-26 1998-04-07 Orban, Inc. Multi-band audio compressor with look-ahead clipper
US6542612B1 (en) * 1997-10-03 2003-04-01 Alan W. Needham Companding amplifier with sidechannel gain control
US6597961B1 (en) 1999-04-27 2003-07-22 Realnetworks, Inc. System and method for concealing errors in an audio transmission
GB2409389B (en) * 2003-12-09 2005-10-05 Wolfson Ltd Signal processors and associated methods
JPWO2006043403A1 (ja) * 2004-10-20 2008-05-22 株式会社安川電機 エンコーダ信号処理装置およびその信号処理方法
US8321776B2 (en) 2007-12-15 2012-11-27 Analog Devices, Inc. Parity error correction for band-limited digital signals
CN102812431A (zh) 2010-03-22 2012-12-05 Lrdc系统有限公司 用于识别与保护一组源数据的完整性的方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863215A (en) * 1973-07-03 1975-01-28 Rca Corp Detector for repetitive digital codes
US3919690A (en) * 1975-02-27 1975-11-11 Gte Sylvania Inc Digital receiving apparatus
US4225751A (en) * 1978-12-18 1980-09-30 Harris Corporation Variable-angle, multiple channel amplitude modulation system
NL7901477A (nl) * 1979-02-26 1980-08-28 Philips Nv Geluidsweergave in een ruimte met een onafhankelijke geluidsbron.
US4295223A (en) * 1979-04-25 1981-10-13 Westinghouse Electric Corp. Digital signal/noise ratio amplifier apparatus for a communication system
US4249042A (en) * 1979-08-06 1981-02-03 Orban Associates, Inc. Multiband cross-coupled compressor with overshoot protection circuit
US4373115A (en) * 1980-08-18 1983-02-08 Kahn Leonard R Predictive distortion reduction in AM stereo transmitters
DE3381548D1 (de) * 1982-09-20 1990-06-13 Sanyo Electric Co Geraet zur geheimuebertragung.
JPS6070836A (ja) * 1983-09-27 1985-04-22 Sansui Electric Co 送信装置
US4752953A (en) * 1983-05-27 1988-06-21 M/A-Com Government Systems, Inc. Digital audio scrambling system with pulse amplitude modulation
US4608456A (en) * 1983-05-27 1986-08-26 M/A-Com Linkabit, Inc. Digital audio scrambling system with error conditioning
US4701953A (en) * 1984-07-24 1987-10-20 The Regents Of The University Of California Signal compression system
US4704727A (en) * 1985-11-27 1987-11-03 Beard Terry D Low noise and distortion FM transmission system and method

Also Published As

Publication number Publication date
NO940381D0 (no) 1994-02-07
EP0284627A1 (en) 1988-10-05
CA1299751C (en) 1992-04-28
EP0284627A4 (en) 1990-01-29
NO940381L (no) 1988-07-18
DK272588D0 (da) 1988-05-18
DK175140B1 (da) 2004-06-14
NO314239B1 (no) 2003-02-17
ATE81572T1 (de) 1992-10-15
DK272588A (da) 1988-05-18
US4809274A (en) 1989-02-28
EP0284627B1 (en) 1992-10-14
DE3782245D1 (de) 1992-11-19
JPH01501748A (ja) 1989-06-15
NO882137D0 (no) 1988-05-16
AU601513B2 (en) 1990-09-13
NO176040C (no) 1995-01-18
AU8103487A (en) 1988-04-07
JPH0685509B2 (ja) 1994-10-26
DE3782245T2 (de) 1993-04-15
WO1988002201A1 (en) 1988-03-24
NO176040B (no) 1994-10-10

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