EP1052621A3 - Method and circuit arrangement for quality information determination to detect errors in the transmission of a speech signal - Google Patents

Method and circuit arrangement for quality information determination to detect errors in the transmission of a speech signal Download PDF

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Publication number
EP1052621A3
EP1052621A3 EP00440136A EP00440136A EP1052621A3 EP 1052621 A3 EP1052621 A3 EP 1052621A3 EP 00440136 A EP00440136 A EP 00440136A EP 00440136 A EP00440136 A EP 00440136A EP 1052621 A3 EP1052621 A3 EP 1052621A3
Authority
EP
European Patent Office
Prior art keywords
quality information
transmission
quality
channel
circuit arrangement
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.)
Withdrawn
Application number
EP00440136A
Other languages
German (de)
French (fr)
Other versions
EP1052621A2 (en
Inventor
Tim Fingscheidt
Bernhard Noé
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.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP1052621A2 publication Critical patent/EP1052621A2/en
Publication of EP1052621A3 publication Critical patent/EP1052621A3/en
Withdrawn legal-status Critical Current

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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
    • 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

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  • 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)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Error Detection And Correction (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

In digitalen Übertragungssystemen, wie beispielsweise in Mobilfunksystemen, hängt die Sprachqualität wesentlich von der Korrekturfähigkeit des Kanaldecodierverfahrens ab. Zur Verbesserung der Sprachqualität werden Fehlerverdeckungsmaßnahmen getroffen, deren Wirksamkeit von der Genauigkeit der Qualitätsinformation der Kanalübertragungsqualität bestimmt wird. Erfindungsgemäß werden bekannte Qualitätsinformationen so kombiniert und transformiert, daß sie für die Fehlerverdeckungsmaßnahmen als zuverlässige Eingangsparameter geeignet sind. Durch Berücksichtigung des Bad Frame Indikator BFI bei der Auswahl der Transformationsvorschriften lassen sich unterschiedliche Transformationsvorschriften an die jeweiligen Übertragungsbedingungen anpassen. Das Verfahren ist einfach realisierbar, wenn in einem upstream-Kanal eine Transformationseinheit (4) zwischen Kanaldecodierer (1) und Fehlerverdeckungseinheit (2) eingefügt wird.

Figure 00000001
In digital transmission systems, such as in mobile radio systems, the speech quality essentially depends on the correctibility of the channel decoding method. To improve the voice quality, error masking measures are taken, the effectiveness of which is determined by the accuracy of the quality information of the channel transmission quality. According to the invention, known quality information is combined and transformed such that it is suitable as reliable input parameters for the error masking measures. By taking the bad frame indicator BFI into account when selecting the transformation regulations, different transformation regulations can be adapted to the respective transmission conditions. The method can be easily implemented if a transformation unit (4) is inserted between the channel decoder (1) and the error concealment unit (2) in an upstream channel.
Figure 00000001
EP00440136A 1999-05-10 2000-05-09 Method and circuit arrangement for quality information determination to detect errors in the transmission of a speech signal Withdrawn EP1052621A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19921504 1999-05-10
DE1999121504 DE19921504A1 (en) 1999-05-10 1999-05-10 Method and circuit arrangement for determining quality information about the transmission quality of a speech signal in a digital transmission system

Publications (2)

Publication Number Publication Date
EP1052621A2 EP1052621A2 (en) 2000-11-15
EP1052621A3 true EP1052621A3 (en) 2003-11-05

Family

ID=7907585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00440136A Withdrawn EP1052621A3 (en) 1999-05-10 2000-05-09 Method and circuit arrangement for quality information determination to detect errors in the transmission of a speech signal

Country Status (3)

Country Link
EP (1) EP1052621A3 (en)
AU (1) AU2777500A (en)
DE (1) DE19921504A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10065937A1 (en) * 2000-11-17 2002-05-23 Rohde & Schwarz Method and arrangement for measuring the bit error rate and / or block error rate of a mobile phone
US7035347B2 (en) 2002-11-13 2006-04-25 Sony Ericsson Mobile Communications Ab Combining direct interference estimation and decoder metrics for improved measurement for AMR mode adaptation in GSM systems

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4335305A1 (en) * 1993-10-16 1995-04-20 Philips Patentverwaltung Method and circuit arrangement for transmitting voice signals
US5432778A (en) * 1992-06-23 1995-07-11 Telefonaktiebolaget Lm Ericsson Method and an arrangement for frame detection quality estimation in the receiver of a radio communication system
EP0689312A2 (en) * 1994-06-21 1995-12-27 NEC Corporation Soft decision signal outputting receiver
EP0798888A2 (en) * 1996-03-29 1997-10-01 Nokia Mobile Phones Ltd. Method and apparatus for digital communication with error encoding according to division of data in classes
EP0805572A2 (en) * 1996-05-03 1997-11-05 Texas Instruments Inc. Error detection and error concealment for encoded speech data
US5901186A (en) * 1994-04-28 1999-05-04 Telefonaktieboalget Lm Ericsson Bad frame detection

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3535178A1 (en) * 1985-10-02 1987-04-09 Thomson Brandt Gmbh Correction method
JP2746033B2 (en) * 1992-12-24 1998-04-28 日本電気株式会社 Audio decoding device
US5502713A (en) * 1993-12-07 1996-03-26 Telefonaktiebolaget Lm Ericsson Soft error concealment in a TDMA radio system
FI100566B (en) * 1996-01-24 1997-12-31 Nokia Telecommunications Oy Frame quality identification method and receiver

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5432778A (en) * 1992-06-23 1995-07-11 Telefonaktiebolaget Lm Ericsson Method and an arrangement for frame detection quality estimation in the receiver of a radio communication system
DE4335305A1 (en) * 1993-10-16 1995-04-20 Philips Patentverwaltung Method and circuit arrangement for transmitting voice signals
US5901186A (en) * 1994-04-28 1999-05-04 Telefonaktieboalget Lm Ericsson Bad frame detection
EP0689312A2 (en) * 1994-06-21 1995-12-27 NEC Corporation Soft decision signal outputting receiver
EP0798888A2 (en) * 1996-03-29 1997-10-01 Nokia Mobile Phones Ltd. Method and apparatus for digital communication with error encoding according to division of data in classes
EP0805572A2 (en) * 1996-05-03 1997-11-05 Texas Instruments Inc. Error detection and error concealment for encoded speech data

Also Published As

Publication number Publication date
AU2777500A (en) 2000-11-16
DE19921504A1 (en) 2000-11-23
EP1052621A2 (en) 2000-11-15

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