The Broadvoice Speech Coding Algorithm

Author

Juin-Hwey Chen ; Thyssen, J.

Author_Institution

Broadcom Corp., Irvine, CA, USA

Volume

4

fYear

2007

fDate

15-20 April 2007

Abstract

This paper describes the BroadVoice® speech coding algorithm, which has been standardized as PacketCable™, SCTE®, and ANSI standards for VoIP cable telephony. The BroadVoice family of codecs includes a 16 kb/s BroadVoice 16 narrowband codec and a 32 kb/s BroadVoice32 wideband codec. BroadVoice is based on two-stage noise feedback coding with vector quantization of excitation and is optimized for low delay, low complexity, and high quality. It has an algorithmic delay of merely 5 ms and a complexity of only 12 and 17 MIPS for BroadVoice16 and BroadVoice32, respectively. The speech quality of BroadVoice16 is better than that of G.728, G.729, and 32 kb/s G.726. The speech quality of BroadVoice32 is better than that of 64 kb/s G.722.

Keywords

ANSI standards; Internet telephony; feedback; speech codecs; speech coding; 16 kbit/s; 32 kbit/s; 5 ms; 64 kbit/s; ANSI standards; BroadVoice speech coding algorithm; G.722; G.726; G.728; G.729; PacketCable standards; SCTE standards; VoIP cable telephony; narrowband codec; two-stage noise feedback coding; vector quantization; wideband codec; ANSI standards; Codecs; Communication cables; Delay; Feedback; Internet telephony; Narrowband; Speech coding; Vector quantization; Wideband; BV16; BV32; BroadVoice; NFC; noise feedback coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on

Conference_Location

Honolulu, HI

ISSN

1520-6149

Print_ISBN

1-4244-0727-3

Type

conf

DOI

10.1109/ICASSP.2007.366968

Filename

4218156