Ninth International Conference on Spoken Language Processing

Pittsburgh, PA, USA
September 17-21, 2006

Interleaving and MMSE Estimation with VQ Replicas for Distributed Speech Recognition Over Lossy Packet Networks

Angel M. Gómez, Antonio M. Peinado, Victoria Sánchez, José L. Carmona, Antonio J. Rubio

Universidad de Granada, Spain

In this work we evaluate the performance of MMSE estimation with a media-specific FEC based on VQ replicas in comparison with MAP estimation and interleaving, both operating in a DSR system over a loss-prone packet switched network. Both schemes combine a sender-driven with a receiver-based technique and, as we show, clearly outperform the standard Aurora mitigation. However, as independent techniques, interleaving and FEC codes could be jointly applied. Although this would provide better results, a direct combination of FECs and interleaving involves a sum of the delays of both operations. In this work, we introduce a double stream-based strategy that avoids this sum of delays.

Full Paper

Bibliographic reference.  Gómez, Angel M. / Peinado, Antonio M. / Sánchez, Victoria / Carmona, José L. / Rubio, Antonio J. (2006): "Interleaving and MMSE estimation with VQ replicas for distributed speech recognition over lossy packet networks", In INTERSPEECH-2006, paper 1279-Tue2BuP.2.