Wideband speech coding using forward/backward adaptive prediction with mixed time/frequency domain excitation

Authors :: J. Schnitzler
Peter Vary
Christoph Erdmann
J. Eggers
Source :: 1999 IEEE Workshop on Speech Coding Proceedings. Model, Coders, and Error Criteria (Cat. No.99EX351).
Publication Year :: 2003
Publisher :: IEEE, 2003.
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.

Subjects :: Code-excited linear prediction
Adaptive Multi-Rate audio codec
Computer science
Frequency domain
Speech coding
Electronic engineering
Time domain
Filter (signal processing)
Vector sum excited linear prediction
Harmonic Vector Excitation Coding

Database :: OpenAIRE
Journal :: 1999 IEEE Workshop on Speech Coding Proceedings. Model, Coders, and Error Criteria (Cat. No.99EX351)
Accession number :: edsair.doi...........6370b3691084e65002057934627885ce
Full Text :: https://doi.org/10.1109/scft.1999.781465

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