Improving upon toll quality speech for VOIP

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...

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Bibliographic Details
Main Authors: Cox, R.V., Malah, D., Kapilow, D.
Format: Conference Proceeding
Language:English
Subjects:
Access methods and protocols, osi model
ANSI standards
Applied sciences
Bandwidth
Exact sciences and technology
Internet telephony
Interpolation
Phase change materials
Programmable control
Signal analysis
Speech analysis
Spline
Switching and signalling
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Transmission and modulation (techniques and equipments)
Wideband
Online Access:Request full text
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Summary: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.
DOI:10.1109/ACSSC.2004.1399163