Estimation of frame independent and enhancement components for speech communication over packet networks

In this paper, we describe a new approach to cope with packet loss in speech coders. The idea is to split the information present in each speech packet into two components, one to independently decode the given speech frame and one to enhance it by exploiting inter-frame dependencies. The scheme is...

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Bibliographic Details
Main Authors: Giacobello, Daniele, Murthi, M N, Christensen, M G, Jensen, S H, Moonen, M
Format: Conference Proceeding
Language:English
Subjects:
analysis-by-synthesis
Bit rate
Decoding
Internet telephony
linear predictive coding
Oral communication
Probability
Speech analysis
Speech codecs
Speech coding
Speech enhancement
Speech synthesis
Voice over IP (VoIP)
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Description
Summary:In this paper, we describe a new approach to cope with packet loss in speech coders. The idea is to split the information present in each speech packet into two components, one to independently decode the given speech frame and one to enhance it by exploiting inter-frame dependencies. The scheme is based on sparse linear prediction and a redefinition of the analysis-by-synthesis process. We present Mean Opinion Scores for the presented coder with different degrees of packet loss and show that it performs similarly to frame dependent coders for low packet loss probability and similarly to frame independent coders for high packet loss probability. We also present ideas on how to make the coder work synergistically with the channel loss estimate.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2010.5495189