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Books > Computing & IT > Applications of computing > Signal processing
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Integral and Diagnostic Intrusive Prediction of Speech Quality (Hardcover, 2011 Ed.)
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Integral and Diagnostic Intrusive Prediction of Speech Quality (Hardcover, 2011 Ed.)
Series: T-Labs Series in Telecommunication Services
Expected to ship within 10 - 15 working days
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This work deals with the instrumental measurement methods for the
perceived quality of transmitted speech. These measures simulate
the speech perception process employed by human subjects during
auditory experiments. The measure standardized by the International
Telecommunication Union (ITU), called "Wideband-Perceptual Speech
Quality Evaluation (WB-PESQ)," is not able to quantify all these
perceived characteristics on a unidimensional quality scale, the
Mean Opinion Score (MOS) scale. Recent experimental studies showed
that subjects make use of several perceptual dimensions to judge
about the quality of speech signals. In order to represent the
signal at a higher stage of perception, a new model, called
"Diagnostic Instrumental Assessment of Listening quality (DIAL),"
has been developed. It includes a perceptual and a cognitive model
which simulate the whole quality judgment process. Except for
strong discontinuities, DIAL predicts very well speech quality of
different speech processing and transmission systems, and it
outperforms the WB-PESQ.
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