Assessment of signal quality

Details Assessment of signal quality Assessment of signal quality

H - Electricity

04

B

H04B 17/00 (2006.01) G06K 9/66 (2006.01) G10L 19/00 (2006.01) H04B 1/66 (2006.01) H04M 3/22 (2006.01)

Patent

CA 2225407

A speech signal (2) is subjected to vocal tract analysis and the output therefrom is analysed by a neural network (5). The output from the neural network is compared with the parameters stored in the network definition function (4), to derive measurement of the quality of the signal supplied to the source (2). The network definition function is determined by applying to the trainable processing apparatus a distortion perception measure indicative of the extent to which a distortion would be perceptible to a human listener.

Un signal vocal (2) est soumis à une analyse du tractus aérien dont la sortie est ensuite analysée par réseau neuronal (5). La sortie du réseau neuronal est comparée aux paramètres stockés dans la fonction (4) de définition du réseau, ce qui permet d'extraire une mesure de la qualité du signal fourni à la source (2). Pour valoriser la fonction de définition de réseau, le procédé consiste à appliquer au dispositif de traitement à auto-apprentissage une mesure de perception des distorsions représentatives du niveau de distorsion normalement perceptible par l'oreille humaine.

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