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Abstract

The present invention relates to apparatus and method of synthesizing speech for synthesis units which form words. The method comprises the steps of generating, for each of multiple utterances of a given synthesis unit, a series of frames of analysis data, the frames being generated one frame every To period, each frame in each series having a parameter value associated therewith; where one series results in M frames of data, partitioning each other series of frames to provide M time intervals each of which corresponds to one of the frames of said one series; synthesizing speech data for the synthesis unit, the synthesized speech data corresponding to a sequence of time intervals wherein each time interval has an associated parameter value, said synthesizing step including the steps of: (a) representing the synthesized data as a sequence of M time intervals, interpolating each ith time interval (where 1.ltoreq.i.ltoreq.M) for the synthesized data from the respective ith intervals corresponding to the utterance; and (b) interpolating the parameter value at each ith time interval of the synthesized data from the parameter values for the respective ith intervals corresponding to the utterances.

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First Claim