SPEECH CODING

Speech is analysed to derive the parameters of a synthesis filter and the parameters of a suitable excitation, selected from a codebook of excitation frames. The selection of the codebook entry is facilitated by determining a single-pulse excitation (eg.using conventional "multipulse" exci...

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Bibliographic Details
Main Authors FREEMAN, DANIEL KENNETH, BOYD, IVAN
Format Patent
LanguageEnglish
Published 15.04.1992
Subjects
ACOUSTICS
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
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Summary:Speech is analysed to derive the parameters of a synthesis filter and the parameters of a suitable excitation, selected from a codebook of excitation frames. The selection of the codebook entry is facilitated by determining a single-pulse excitation (eg.using conventional "multipulse" excitation techniques) and using the position of this pulse to narrow the codebook search. The codebook entries can be subject to the limitation that some entries are rotationally shifted versions of other entries.
Bibliography:Application Number: EP19880307978