Patent ID: 7249020

Claim:
A method of producing a synthesized voice, said method including: producing a voice sound waveform at a voice sampling frequency based on pronunciation informations; producing a voice-less sound waveform at a voice-less sampling frequency based on said pronunciation informations; converting said voice sampling frequency into an output sampling frequency to produce a frequency-converted voice sound waveform with said output sampling frequency, wherein each of said voice sampling frequency and said voice-less sampling frequency is independent from said output sampling frequency; and converting said voice-less sampling frequency into said output sampling frequency to produce a frequency-converted voice-less sound waveform with said output sampling frequency, further including: providing a time quantization width defined between head and bottom times which have time-correspondences between a sampling frequency unconverted sample point and a sampling frequency converted sample point; and defining, for each sample, a pair of said pronunciation information and a time quantization delay at said head time of said time quantization width, and said time quantization delay corresponding to a waiting time from said head time until defining each of sampling frequency converted samples which are to be produced in said time quantization width; whereby said voice sound waveform for said each sample is produced with said time quantization delay from said head time at said voice sampling frequency based on said pronunciation information corresponding to said each of sampling frequency converted samples, and whereby said voice-less sound waveform for said each sample is produced with said time quantization delay from said head time at said voice-less sampling frequency based on said pronunciation information corresponding to said each of sampling frequency converted samples.