Titlebook: Speech and Audio Coding for Wireless and Network Applications; Bishnu S. Atal,Vladimir Cuperman,Allen Gersho Book 1993 Springer Science+Bu

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Speech Quality Evaluation of the European, North-American and Japanese Speech Coding Standards for Dn indication of the difference of performance not only due to the different data rates but also due to the different algorithms themselves. In this paper the subjective speech quality of these three speech coder algorithms is evaluated. The influence of channel errors and the correspondent channel coding for each codec are not considered.

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Subjective Assessment Methods for the Measurement of Digital Speech Coder Qualityr characteristics relevant to the type of system under evaluation are briefly considered first, since these factors influence the selection of a suitable assessment methodology. Next, listener opinion tests are described. Finally, articulation and diagnostic tests as well as conversational opinion and field tests are briefly addressed.

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QCELP: A Variable Rate Speech Coder for CDMA Digital Cellulariple Access, or CDMA, based digital cellular telephone system by decreasing the mutual interference among users. This chapter describes “QCELP,” a variable rate speech coder which has been selected as the speech coding algorithm for the TIA North American digital cellular standard based on CDMA technology.

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0893-3405 this volume reflect the progress and presentthe state of the art in low-bit-rate speech coding, primarily at bitrates from 2.4 kbit/s to 16 kbit/s. Together they represent importantcontributions from leading researchers in the speech codingcommunity...Speech and Audio Coding for Wireless and Network

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