SE9500858L - Device and method of voice transmission and a telecommunication system comprising such device - Google Patents

Device and method of voice transmission and a telecommunication system comprising such device

Info

Publication number
SE9500858L
SE9500858L SE9500858A SE9500858A SE9500858L SE 9500858 L SE9500858 L SE 9500858L SE 9500858 A SE9500858 A SE 9500858A SE 9500858 A SE9500858 A SE 9500858A SE 9500858 L SE9500858 L SE 9500858L
Authority
SE
Sweden
Prior art keywords
frame
frames
speech
lost
corrupted
Prior art date
Application number
SE9500858A
Other languages
Swedish (sv)
Other versions
SE9500858D0 (en
Inventor
Per Hallkvist
Peter Galyas
Stefan Jung
Johan Andersson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9500858A priority Critical patent/SE9500858L/en
Publication of SE9500858D0 publication Critical patent/SE9500858D0/en
Priority to EP96906989A priority patent/EP0819302B1/en
Priority to AU50181/96A priority patent/AU5018196A/en
Priority to PCT/SE1996/000311 priority patent/WO1996028809A1/en
Priority to DE69621613T priority patent/DE69621613T2/en
Publication of SE9500858L publication Critical patent/SE9500858L/en
Priority to US08/924,878 priority patent/US6055497A/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

A system and method are provided for improving speech quality for signals divided into a frame structure. Speech information in a signal is detected, and a lost or corrupted transmitted frame is detected. The lost or corrupted frame is replaced by a suitable frame if a number of frames represented e.g., by a counter value, exceeds a predetermined value. The counter value may be changed, depending on whether the system is in a comfort noise generation state or in a muting period. The frame may be replaced by a frame representing mainly background noise, generated at the transmitting end during speech pauses or at the receiving end, or such a frame and a correctly received frame. The predetermined value may be the length of a muting period or may be the number of lost or corrupted frames preceding a speech frame. A first of the correctly received speech frames that follows a number of lost or corrupted frames may also be replaced. The output frames gradually approach pure speech frames.
SE9500858A 1995-03-10 1995-03-10 Device and method of voice transmission and a telecommunication system comprising such device SE9500858L (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9500858A SE9500858L (en) 1995-03-10 1995-03-10 Device and method of voice transmission and a telecommunication system comprising such device
EP96906989A EP0819302B1 (en) 1995-03-10 1996-03-11 Arrangement and method relating to speech transmission and a telecommunications system comprising such arrangement
AU50181/96A AU5018196A (en) 1995-03-10 1996-03-11 Arrangement and method relating to speech transmission and a telecommunications system comprising such arrangement
PCT/SE1996/000311 WO1996028809A1 (en) 1995-03-10 1996-03-11 Arrangement and method relating to speech transmission and a telecommunications system comprising such arrangement
DE69621613T DE69621613T2 (en) 1995-03-10 1996-03-11 ARRANGEMENT AND METHOD FOR TRANSMITTING VOICE AND A TELEPHONE SYSTEM CONTAINING SUCH AN ARRANGEMENT
US08/924,878 US6055497A (en) 1995-03-10 1997-09-05 System, arrangement, and method for replacing corrupted speech frames and a telecommunications system comprising such arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9500858A SE9500858L (en) 1995-03-10 1995-03-10 Device and method of voice transmission and a telecommunication system comprising such device

Publications (2)

Publication Number Publication Date
SE9500858D0 SE9500858D0 (en) 1995-03-10
SE9500858L true SE9500858L (en) 1996-09-11

Family

ID=20397500

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9500858A SE9500858L (en) 1995-03-10 1995-03-10 Device and method of voice transmission and a telecommunication system comprising such device

Country Status (6)

Country Link
US (1) US6055497A (en)
EP (1) EP0819302B1 (en)
AU (1) AU5018196A (en)
DE (1) DE69621613T2 (en)
SE (1) SE9500858L (en)
WO (1) WO1996028809A1 (en)

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US6708024B1 (en) * 1999-09-22 2004-03-16 Legerity, Inc. Method and apparatus for generating comfort noise
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US20030101049A1 (en) * 2001-11-26 2003-05-29 Nokia Corporation Method for stealing speech data frames for signalling purposes
US6915246B2 (en) * 2001-12-17 2005-07-05 International Business Machines Corporation Employing speech recognition and capturing customer speech to improve customer service
US7058565B2 (en) * 2001-12-17 2006-06-06 International Business Machines Corporation Employing speech recognition and key words to improve customer service
US6721712B1 (en) * 2002-01-24 2004-04-13 Mindspeed Technologies, Inc. Conversion scheme for use between DTX and non-DTX speech coding systems
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CN101226744B (en) * 2007-01-19 2011-04-13 华为技术有限公司 Method and device for implementing voice decode in voice decoder
GB0703795D0 (en) * 2007-02-27 2007-04-04 Sepura Ltd Speech encoding and decoding in communications systems
US7826872B2 (en) * 2007-02-28 2010-11-02 Sony Ericsson Mobile Communications Ab Audio nickname tag associated with PTT user
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Also Published As

Publication number Publication date
US6055497A (en) 2000-04-25
DE69621613T2 (en) 2003-01-30
AU5018196A (en) 1996-10-02
DE69621613D1 (en) 2002-07-11
EP0819302A1 (en) 1998-01-21
SE9500858D0 (en) 1995-03-10
WO1996028809A1 (en) 1996-09-19
EP0819302B1 (en) 2002-06-05

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