Title :
A combined WI and MELP coder at 5.2 kbps
Author :
Skoglund, Jan ; Cox, Richard V. ; Collura, John S.
Author_Institution :
AT&T Labs.-Res., Florham Park, NJ, USA
Abstract :
This paper presents a low bit rate speech coder that encodes speech using two parallel coders into one embedded bit frame structure of 5.2 kbps. The two coders, a mixed excitation linear predictive coder (MELP) and a waveform interpolation (WI) coder, share the same pitch and linear prediction analysis and quantization. The combined coder is structured to provide a higher performance option of WI while maintaining compatibility with standard 2.4 kbps MELP via an embedded MELP mode
Keywords :
interpolation; linear predictive coding; speech coding; vocoders; waveform analysis; 5.2 kbit/s; MELP coder; WI coder; combined coder; embedded bit frame structure; linear prediction analysis; linear prediction quantization; low bit rate coding; mixed excitation linear predictive coder; pitch analysis; pitch quantization; speech coder; speech coding; waveform interpolation coder; Bit rate; Code standards; Communication standards; Decoding; Government; Internet; Interpolation; Noise reduction; Quantization; Speech coding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
0-7803-6293-4
DOI :
10.1109/ICASSP.2000.861839
