An embedded speech and audio coding method based on bit-plane coding and SQVH

Author

Jia, Mao-shen ; Bao, Chang-chun ; Liu, Xin

Author_Institution

Speech & Audio Signal Process. Lab., Beijing Univ. of Technol., Beijing, China

fYear

2009

fDate

14-17 Dec. 2009

Firstpage

43

Lastpage

48

Abstract

A multi-layer embedded speech and audio coding algorithm based on bit-plane coding and Scalar Quantized Vector Huffman Coding (SQVH) is proposed in this paper. In this codec the signal sampled at 32 kHz can be coded in terms of scalable bit rates. The core codec is International Telecommunication Union Telecommunication Standardization Sector (ITU-T) G.729.1 which can process signal with 7 kHz bandwidth. Besides there are five extra bit-rates added and the bandwidth is extended to 14 kHz. The additional bit-rates include 36, 40, 48, 56, and 64 kb/s. Some new methods used in the additional layers are proposed in this paper. The objective and subjective listening tests show that this codec has good performance compared with reference codec.

Keywords

Huffman codes; audio coding; quantisation (signal); speech codecs; speech coding; standards; ITU-T G.729.1 standard; audio coding; bandwidth 14 kHz; bandwidth 7 kHz; bit rate 36 kbit/s to 64 kbit/s; bit-plane coding; frequency 32 kHz; reference codec; scalar quantized vector Huffman coding; speech coding; Audio coding; Bandwidth; Codecs; Mobile communication; Signal processing; Signal processing algorithms; Speech coding; Speech processing; Standardization; Wideband; audio coding; embedded coding; speech coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Information Technology (ISSPIT), 2009 IEEE International Symposium on

Conference_Location

Ajman

Print_ISBN

978-1-4244-5949-0

Type

conf

DOI

10.1109/ISSPIT.2009.5407486

Filename

5407486