Publications – Details
Wideband Speech Coding Using Forward/Backward Adaptive Prediction with Mixed Time/Frequency Domain Excitation
- Authors:
- Jürgen Schnitzler, Joachim Eggers, Christoph Erdmann, and Peter Vary
- Book Title:
- Proceedings of IEEE Workshop on Speech Coding (SCW)
- Venue:
- Haikko Manor, Porvoo, Finland
- Date:
- June 1999
- Pages:
- 4–6
- Language:
- English
Abstract
This paper describes a wideband (7 kHz) speech coding scheme using code-excited linear prediction (CELP) with mixed time and frequency domain excitation. The proposed frequency domain innovation can be used alternatively or in parallel to a time domain codebook. In addition an improved synthesis filter is used consisting of a signal dependent combination of a forward adaptive and a backward adaptive (FA/BA) structure. An experimental codec operating at 15.5 or 20.0 kbit/s is demonstrated.
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