G - Physics – 10 – L
Patent
G - Physics
10
L
G10L 19/12 (2006.01) G10L 19/00 (2006.01) G10L 9/14 (1995.01) G10L 9/08 (1995.01)
Patent
CA 2152513
In an excitation signal encoding method comprising the steps of, dividing a speech signal into a plurality of frames, dividing each of the plurality of frames into a plurality of subframes each of which has a subframe length, and generating a new excitation signal by the use of an adaptive code book comprising a plurality of adaptive code vectors and a sound source code book comprising a plurality of sound source code vectors, the generating step is carried out in a predetermined period when the predetermined period is shorter than the subframe length. The generating step is carried out by the use of the adaptive code vector that as calculated using the excitation signal generated in the former period and by the use of the sound source code vector of the present period.
Ozawa Kazunori
Serizawa Masahiro
Corporation Nec
G. Ronald Bell & Associates
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