Abstract
AbstractThis paper considers the relation between the vocal tract characteristics under the personality of speech. A pitch synchronous analysis‐synthesis system was constructed in which the formant frequencies and the bandwidths can be modified independently. The speech was synthesized by controlling these parameters in natural speech, and an experiment was made on the discrimination of personalities. As a result, it is seen that the personality is strongly sensitive to the formant frequency shift, especially to the shift of the lower three formants, and it is lost by the uniform shift of 5 percent. On the other hand, the personality is well preserved for the change of formant bandwidth, and is sensitive to the bandwidth change in the fourth‐ and higher‐order for‐mants. In the case of uniform change of the bandwidth, deformation of wider than 5 times or narrower than one‐fifth times completely eliminates the personality.
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