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

Volume

3

fYear

2000

fDate

2000

Firstpage

1387

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on

Conference_Location

Istanbul

ISSN

1520-6149

Print_ISBN

0-7803-6293-4

Type

conf

DOI

10.1109/ICASSP.2000.861839

Filename

861839