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Simulated Spectrogram for Speech Synthesis

IP.com Disclosure Number: IPCOM000038839D
Original Publication Date: 1987-Mar-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue

IBM

Related People

Authors:
Dixon, NR Evangelisti, C Pickover, CA [+details]

Abstract

This invention involves a speech synthesizer which represents synthesizer control functions as a control vector spectrogram. Control data which guides the synthesizer is plotted in a format that is easily interpreted by speech scientists. In accordance with the invention, each utterance of speech is segmented into diphones. Each diphone is composed of several control vectors changing through time. The control vectors serve as inputs from a computer to a speech synthesizer. (Image Omitted) In Fig. 1, the utterance "seventeen" is shown segmented along the abscissa to indicate nine diphones --i.e., XXSX, 04SXEH,..., XXNX. Diphones are discussed in the prior art [*]. Along the ordinate of the graph of Fig. 1 are ten control vectors AN through CO, the values of which are shown to vary over time (in the horizontal direction).