Method for processing speech signal using sub-converting functio

Details Method for processing speech signal using sub-converting functio Method for processing speech signal using sub-converting functio

1995-09-12

1997-12-30

MacDonald, Allen R.

395 211, 395 231, 395 241, 395 21, 395156, G10L 504

Patent

active

057040060

ABSTRACT:
A parameter converting method and a speech synthesizing method for synthesizing speech with a voice quality similar to that of an input voice includes a parameter converting function constituted of a weighting function for setting weighting coefficients on an input sound spectrum parameter space and a plurality of sub-converting functions. Conversion outputs of the respective sub-converting functions are given weighting coefficients such that the sum of the weighted conversion outputs is used as the parameter converting function to convert M sound spectrum parameter to a single sound spectrum parameter. In this way, the freedom of adaptation with respect to the parameter converting function can be more properly set, so that the parameter converting function can provide an accuracy in accordance with an amount of speech data inputted for learning. It is therefore possible to provide a sound spectrum parameter for generating a voice quality much closer to that of an input voice.

REFERENCES:
patent: 5070515 (1991-12-01), Iwahashi et al.
patent: 5115240 (1992-05-01), Fujiwara et al.
patent: 5396577 (1995-03-01), Oikawa et al.
"Voice Quality Control by Speaker Interpolation Processing" by Iwahashi et Explanation of Relevance Attached Hereto!.
"Voice Quality Conversion by Vector Quantization" by Abe et al, Japan Explanation of Relevance Attached Hereto!.

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