Method and device for objective speech quality assessment without reference signal
AssigneeKoninklijke KPN N.V.
InventorsJohn Gerard Beerends, Andries Pieter Hekstra
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Abstract
A method of and a device for output based objective speech quality assessment, wherein a degraded output speech signal comprising a speech information portion, is compared (5) with a reference signal retrieved from the output speech signal. The reference signal is provided by perceptual approximation of the speech information portion of the output speech signal using a speech recoder (2) producing a reference speech signal of finite bitrate. In a preferred embodiment, the speech recorder (2) is a speech codec.
Claims23
A method of output based objective speech quality assessment, wherein a degraded output speech signal comprising a speech information portion is compared with a reference signal retrieved from said output speech signal, said reference signal being provided by perceptual approximation of said speech information portion of said output speech signal using a speech recoder producing a reference speech signal of finite bitrate.
A device for output based objective speech quality assessment, comprising retrieval means operatively connected for retrieving a reference signal from a degraded output speech signal, having a speech information portion, and comparator means operatively connected for comparing said output speech signal with said reference signal, and said retrieval means comprise processing means operatively connected for perceptual approximation of said speech information portion of said output speech signal using a speech recoder producing a reference speech signal of finite bitrate.
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