| 摘要 |
The speech load on the conversion-target speaker is lightened and conversion of voice character with high accuracy is effected. A nonlinear frequency axis spectrum matching unit (8) determines a frequency warping function relating to the spectrum envelope of the conversion-source speaker and the spectrum envelope of the conversion-target speaker. A frequency warp table memory (9) holds the averages of the frequency warping function for each phoneme , each similar phoneme , each voiced sound section/voiceless sound section and each whole voice section of the frequency warping fucntion. When the voice character is converted, the spectrum envelope of the conversion-source speaker is converted to the spectrum envelope of the conversion-target speaker by using the average frequency warping function. Thus high-accuracy voice character conversion is effected. If the amount of data on speech of the conversion-target speaker is a little, average frequency warping functions such as of the similar phoneme and the voiced sound section/voiceless sound section are used, thereby dealing with the conversion even if the amount of data on speech of the conversion-target speaker is a little and lightening the speech load on the conversion-target speaker.
|
