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Speech Synthesis by FM Digital Addition Disclosure Number: IPCOM000038545D
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Jan-31

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Evangelisti, CJ Pickover, CA Selker, EJ [+details]


The present invention relates to a speech generator based on FM additive synthesis. FM synthesis involves the modulation of a pure sine wave "carrier" with another wave, a "modulating component", to produce a variety of complex and natural sounding waveforms. In a preferred embodiment, the synthesis is performed in a PL/I computer program (with a graphics interface) which produces a digital audio file. The sample rate is usually set to 10,000 samples/second, and each sample is two bytes long. This file is subsequently read by a D/A (digital-to-analog) playout program on an IBM Personal Computer.