EP 2697794 A1 20140219 - EVALUATION OF THE VOICE QUALITY OF A CODED SPEECH SIGNAL
Title (en)
EVALUATION OF THE VOICE QUALITY OF A CODED SPEECH SIGNAL
Title (de)
BEWERTUNG DER SPRACHQUALITÄT EINES KODIERTEN SPRACHSIGNALS
Title (fr)
EVALUATION DE LA QUALITE VOCALE D'UN SIGNAL DE PAROLE CODE
Publication
Application
Priority
- FR 1153129 A 20110411
- FR 2012050724 W 20120404
Abstract (en)
[origin: WO2012140347A1] The present invention relates to a method of determining an indicator evaluating the voice quality of a coded speech signal. The method is noteworthy in that it comprises the following steps; calculation (E202) per signal frame, of a predetermined number of coefficients of a linear prediction filter for the coded speech signal; determination (E203) per frame, of a speech signal reconstructed on the basis of the filter coefficients thus calculated; obtaining (E204) per sample, of the residual between the coded speech signal and the reconstructed speech signal; calculation (E206) of an evaluation indicator on the basis of the mean or the absolute value of the residuals obtained for all the samples. The invention also relates to a device for determining an indicator implementing the above method. It relates also to a method of evaluating the quality or of identifying the class of coding of the coded signal using the indicator determined, as well as to a measurement terminal implementing these methods.
IPC 8 full level
G10L 25/69 (2013.01); H04M 3/22 (2006.01); G10L 25/12 (2013.01)
CPC (source: EP US)
G10L 19/00 (2013.01 - US); G10L 25/69 (2013.01 - EP US); H04M 3/2236 (2013.01 - EP US); G10L 25/12 (2013.01 - EP US)
Citation (search report)
See references of WO 2012140347A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
FR 2973923 A1 20121012; EP 2697794 A1 20140219; US 2014032212 A1 20140130; US 9355643 B2 20160531; WO 2012140347 A1 20121018
DOCDB simple family (application)
FR 1153129 A 20110411; EP 12718296 A 20120404; FR 2012050724 W 20120404; US 201214111471 A 20120404