EP1288914A3 - Verfahren zur Korrektur von gemessenen Sprachqualitätswerten - Google Patents

Verfahren zur Korrektur von gemessenen Sprachqualitätswerten Download PDF

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Publication number
EP1288914A3
EP1288914A3 EP02012790A EP02012790A EP1288914A3 EP 1288914 A3 EP1288914 A3 EP 1288914A3 EP 02012790 A EP02012790 A EP 02012790A EP 02012790 A EP02012790 A EP 02012790A EP 1288914 A3 EP1288914 A3 EP 1288914A3
Authority
EP
European Patent Office
Prior art keywords
correction
speech quality
quality values
measured speech
measured
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.)
Granted
Application number
EP02012790A
Other languages
English (en)
French (fr)
Other versions
EP1288914B1 (de
EP1288914A2 (de
Inventor
Jens Dr. Berger
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.)
Deutsche Telekom AG
Original Assignee
Deutsche Telekom AG
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 Deutsche Telekom AG filed Critical Deutsche Telekom AG
Publication of EP1288914A2 publication Critical patent/EP1288914A2/de
Publication of EP1288914A3 publication Critical patent/EP1288914A3/de
Application granted granted Critical
Publication of EP1288914B1 publication Critical patent/EP1288914B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G10L25/69—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for evaluating synthetic or decoded 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02168—Noise filtering characterised by the method used for estimating noise the estimation exclusively taking place during speech pauses

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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Noise Elimination (AREA)

Abstract

Instrumentelle Verfahren zur Bestimmung der Sprachqualität von Sprachsignalen werten oft nur Signalabschnitte mit Sprachaktivität aus. Hintergrundgeräusche, die in den Sprachpausen auftreten, bleiben dabei unberücksichtigt. Auch der aktuelle ITU-T Standard P.862 "PESQ" beschränkt sich für die Berechnung des Sprachqualitätswertes auf Signalabschnitte mit Sprachaktivität. Wenn Hintergrundgeräusche in Sprachpausen auftreten, aber ansonsten hochqualitative Sprachqualität vorliegt, bewerten diese Messverfahren die Sprachqualität als zu hoch.
Mit dem vorliegenden Verfahren werden die Geräusche in den Sprachpausen bei der Bestimmung der Sprachqualität berücksichtigt, in dem die gemessenen Sprachqualitätswerte korrigiert werden. Dazu werden ein oder mehrere Intensitätswert von den Hintergrundgeräuschen in den Sprachpausen (z. B. mittlere Lautheit) bestimmt und aus diesen sowie dem Anteil der Sprachpausen im Gesamtsignal und dem Qualitätswert selbst der Korrekturwert ermittelt, um den der gemessene Sprachqualitätswert reduziert wird.
Das beschriebene Ausführungsbeispiel zeigt die Korrektur der Sprachqualitätswerte unter Benutzung der mittleren Lautheit der Hintergrundgeräusche in Sprachpausen für den aktuellen ITU-T Standard P.862 "PESQ" (Stand 2001).
EP02012790A 2001-08-29 2002-06-10 Verfahren zur Korrektur von gemessenen Sprachqualitätswerten Expired - Lifetime EP1288914B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10142846A DE10142846A1 (de) 2001-08-29 2001-08-29 Verfahren zur Korrektur von gemessenen Sprachqualitätswerten
DE10142846 2001-08-29

Publications (3)

Publication Number Publication Date
EP1288914A2 EP1288914A2 (de) 2003-03-05
EP1288914A3 true EP1288914A3 (de) 2004-05-19
EP1288914B1 EP1288914B1 (de) 2005-12-21

Family

ID=7697364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02012790A Expired - Lifetime EP1288914B1 (de) 2001-08-29 2002-06-10 Verfahren zur Korrektur von gemessenen Sprachqualitätswerten

Country Status (3)

Country Link
EP (1) EP1288914B1 (de)
AT (1) ATE313846T1 (de)
DE (2) DE10142846A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2944640A1 (fr) 2009-04-17 2010-10-22 France Telecom Procede et dispositif d'evaluation objective de la qualite vocale d'un signal de parole prenant en compte la classification du bruit de fond contenu dans le signal.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000000962A1 (de) * 1998-06-26 2000-01-06 Ascom Ag Verfahren zur durchführung einer maschinengestützten beurteilung der übertragungsqualität von audiosignalen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI94810C (fi) * 1993-10-11 1995-10-25 Nokia Mobile Phones Ltd Menetelmä huonon GSM-puhekehyksen tunnistamiseksi
US5684921A (en) * 1995-07-13 1997-11-04 U S West Technologies, Inc. Method and system for identifying a corrupted speech message signal
US5809414A (en) * 1995-11-22 1998-09-15 Northern Telecom Limited User out-of-range indication for digital wireless systems
SE506341C2 (sv) * 1996-04-10 1997-12-08 Ericsson Telefon Ab L M Metod och anordning för rekonstruktion av en mottagen talsignal
DE19840548C2 (de) * 1998-08-27 2001-02-15 Deutsche Telekom Ag Verfahren zur instrumentellen Sprachqualitätsbestimmung
GB9911777D0 (en) * 1999-05-20 1999-07-21 Univ Southampton Transceiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000000962A1 (de) * 1998-06-26 2000-01-06 Ascom Ag Verfahren zur durchführung einer maschinengestützten beurteilung der übertragungsqualität von audiosignalen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RIX A W ET AL: "Perceptual evaluation of speech quality (PESQ)-a new method for speech quality assessment of telephone networks and codecs", 2001 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING. PROCEEDINGS. (ICASSP). SALT LAKE CITY, UT, MAY 7 - 11, 2001, IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), NEW YORK, NY: IEEE, US, vol. 2 OF 6, 7 May 2001 (2001-05-07), pages 749 - 752, XP002187839, ISBN: 0-7803-7041-4 *

Also Published As

Publication number Publication date
DE50205328D1 (de) 2006-01-26
EP1288914B1 (de) 2005-12-21
ATE313846T1 (de) 2006-01-15
DE10142846A1 (de) 2003-03-20
EP1288914A2 (de) 2003-03-05

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