| 摘要 |
FIELD: physics, communications.SUBSTANCE: present invention relates to a method for coding an excitation signal in a target speech. The method includes extracting from a set of training normalised residual frames, a set of suitable normalised residual frames, said training residual frames being extracted from a training speech; synchronising on Glottal Closure Instant (GCI) and normalising pitch and energy; determining the target excitation signal of the target speech; dividing said target excitation signal into GCI synchronised target frames; determining the local pitch and energy of the GCI synchronised target frames; normalising the GCI synchronised target frames in energy and pitch to obtain target normalised residual frames; determining coefficients of linear combination of said extracted set of suitable normalised residual frames to build synthetic normalised residual frames close to each target normalised residual frames; wherein the coding parameters for each target residual frame comprise the determined coefficients.EFFECT: providing excitation signals for speech synthesis without a synthetic speech dimness effect.13 cl, 12 dwg, 3 ex |
