Title :
A 8-32 KBIT/S Scalable Wideband Speech and Audio Coding Candidate for ITU-T G729EV Standardization
Author :
Ragot, S. ; Kovesi, B. ; Virette, D. ; Trilling, R. ; Massaloux, D.
Author_Institution :
R&D Div./TECH/SSTP, France Telecom, Lannion
Abstract :
This paper describes a 8-32 kbit/s scalable speech and audio coder submitted as a candidate for the ITU-T G729-based embedded variable bitrate (G729EV) standardization. The coder is built upon a 3-stage coding structure consisting of: narrowband cascade CELP coding at 8 and 12 kbit/s, bandwidth extension based on wideband linear-predictive coding (WB-LPC) at 14 kbit/s, and MDCT coding in a WB-LPC weighted signal domain from 14 to 32 kbit/s. ITU-T test results showed that this coder passed all the requirements of the G729EV qualification phase
Keywords :
audio coding; linear predictive coding; speech coding; standards; transform coding; 8 to 32 kbit/s; ITU-T G729EV standardization; MDCT coding; code excited linear prediction coding; embedded variable bitrate standardization; modified discrete cosine transform coding; narrowband cascade CELP coding; scalable wideband audio coding; scalable wideband speech coding; wideband linear-predictive coding; Audio coding; Bit rate; Finite impulse response filter; Narrowband; Qualifications; Speech coding; Standardization; Telecommunications; Testing; Wideband;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1659942
