Pulse Interval Representations of Speech Events.
ILLINOIS UNIV URBANA BIOLOGICAL COMPUTER LAB
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A new technique for the analysis, synthesis, and transmission of human speech is described which is based on the computation of time intervals between threshold transitions of the derivative in the speech waveform. The position taken here is that the sequence in which significant speech events occur, and their temporal relationships to each other, are for the description of speech as important as its frequency-domain properties, i.e., the dynamic properties and the sustained properties of the speech waveform each are considered to contribute to our understanding of human speech. The described method of coding speech, in which only the intervals between transitions are recorded, is shown to have advantages in certain areas of speech analysis, synthesis, and transmission, over other methods which rely essentially on phenomena in the frequency domain. In particular, it is shown that this coding method provides a basis for transmitting speech with high intelligibility at low transmission rates permits the measurement of many properties of the speech waveform which are difficult or impossible to evaluate using conventional techniques, and allows synthesis, by rule, of many speech sounds. Author
- Voice Communications