Speech coding

Details Speech coding Speech coding

G - Physics

10

L

354/47

G10L 19/10 (2006.01) G10L 19/00 (2006.01)

Patent

CA 1337217

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 and (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.

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