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Standard Speech Codecs

Lajos Hanzo FREng, FIEEE, FIET, DSc, F. Clare Somerville, Jason Woodard

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Abstract

This chapter contains sections titled: Background The US DoD FS-1016 4.8 kbps CELP Codec The 7.95 kbps Pan-American Speech Codec – Known as IS-54 DAMPS Codec The 6.7 kbps Japanese Digital Cellular System's Speech Codec The Qualcomm Variable Rate CELP Codec Japanese Half-rate Speech Codec The Half-rate GSM Speech Codec The 8 kbps G.729 Codec The Reduced Complexity G.729 Annex A Codec The 12.2 kbps Enhanced Full-rate GSM Speech Codec The Enhanced Full-rate 7.4 kbps IS-136 Speech Codec The ITU G.723.1 Dual-rate Codec Advanced Multirate JD-CDMA Transceiver Chapter Summary

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What this paper is about

This chapter contains sections titled: Background The US DoD FS-1016 4.8 kbps CELP Codec The 7.95 kbps Pan-American Speech Codec – Known as IS-54 DAMPS Codec The 6.7 kbps Japanese Digital Cellular System's Speech Codec The Qualcomm Variable Rate CELP Codec Japanese Half-rate Speech Codec The Half-rate GSM Speech Codec The 8 kbps G.729 Codec The Reduced Complexity G.729 Annex A Codec The 12.2 kbps Enhanced Full-rate GSM Speech Codec The Enhanced Full-rate 7.4 kbps IS-136 Speech Codec The ITU G.723.1 Dual-rate Codec Advanced Multirate JD-CDMA Transceiver Chapter Summary

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Available abstract

This chapter contains sections titled: Background The US DoD FS-1016 4.8 kbps CELP Codec The 7.95 kbps Pan-American Speech Codec – Known as IS-54 DAMPS Codec The 6.7 kbps Japanese Digital Cellular System's Speech Codec The Qualcomm Variable Rate CELP Codec Japanese Half-rate Speech Codec The Half-rate GSM Speech Codec The 8 kbps G.729 Codec The Reduced Complexity G.729 Annex A Codec The 12.2 kbps Enhanced Full-rate GSM Speech Codec The Enhanced Full-rate 7.4 kbps IS-136 Speech Codec The ITU G.723.1 Dual-rate Codec Advanced Multirate JD-CDMA Transceiver Chapter Summary

Key concepts: Codec, Adaptive Multi-Rate audio codec, Full Rate, Code-excited linear prediction, Computer science, Codec2, Speech coding, Speech recognition

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