Publications – Details
Speech Decoding with Error Concealment Using Residual Source Redundancy
- Authors:
- Tim Fingscheidt and Peter Vary
- Book Title:
- Proceedings of IEEE Workshop on Speech Coding for Telecommunications
- Venue:
- Pocono Manor, PA, USA
- Date:
- Sept. 1997
- Pages:
- 91–92
- Language:
- English
Abstract
In digital mobile communication systems there is a need for error concealment techniques to reduce the subjective effects of residual bit errors which have not been eliminated by channel decoding. This contribution presents a new approach for optimum estimation of speech codec parameters. It can be applied to any speech codec standard if reliability information about the channel decoded bits is available (e.g., soft-output Viterbi algorithm-SOVA). The proposed method exploits the residual source redundancy and includes an inherent muting mechanism leading to a graceful degradation of speech quality in case of adverse transmission conditions. In the case of an error free channel, bit exactness as required by the standards can be preserved. This approach is applied here to the GSM full rate codec.
Download of Publication
Copyright Notice
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
The following notice applies to all IEEE publications:
© IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.