DocumentCode
427697
Title
Improving upon toll quality speech for VOIP
Author
Cox, Richard V. ; Malah, David ; Kapilow, David
Author_Institution
AT&T Labs-Res., USA
Volume
1
fYear
2004
fDate
7-10 Nov. 2004
Firstpage
405
Abstract
It is well known that wider bandwidth speech is preferred both for quality and intelligibility. In this paper we describe a new, low complexity method for creating wider bandwidth speech from clean telephone bandwidth speech. In addition, we describe a packet loss concealment technique that has been standardized for ITU-T Rec. G.711 64 kb/s PCM and is applicable to wider bandwidth speech as well. Together, these two techniques address two of the primary issues with Voice over IP-how to provide greater fidelity to customers and how to overcome packet losses when they do occur.
Keywords
Internet telephony; pulse code modulation; speech intelligibility; speech processing; 64 Kbit/s; ITU-T; PCM; PLC; VOIP; clean telephone bandwidth speech; packet loss concealment technique; quality intelligibility; toll quality speech; voice over IP; ANSI standards; Bandwidth; Internet telephony; Interpolation; Phase change materials; Programmable control; Signal analysis; Speech analysis; Spline; Wideband;
fLanguage
English
Publisher
ieee
Conference_Titel
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN
0-7803-8622-1
Type
conf
DOI
10.1109/ACSSC.2004.1399163
Filename
1399163
Link To Document