Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1987-06-09
1989-04-11
Shoop, Jr., William M.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 41, 381 42, 381 44, 3645135, G01L 100
Patent
active
048200590
ABSTRACT:
Speech processing apparatus and methods utilizing a circuit for electronically deriving from speech over time a series of coordinate values representing positions of points on a path in a mathematical space which path positions represent the speech. An electronic memory prestores phonetic representations in correspondence with indicia of a glide in the path which indicia represent a nucleus in the space at which the glide begins and a range of directions of offglide on the path from the nucleus. A trajectory parameter is electronically computed from the series of coordinate values. When both the trajectory parameter satisfies a predetermined condition for significance and a coordinate value currently reached by the speech is within a predetermined region of such values, a signal is produced. The speech on the path is electronically analyzed in response to the signal for occurrence of a position in the nucleus and an offglide in said range of directions which offglide happens before another significant trajectory parameter occurs. Upon occurrence of such indicia of a glide, the phonetic representation corresponding to the glide indicia is obtained from the electronic memory. Other apparatus and methods for producing a segmentation index signal representing the trajectory parameter are disclosed.
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Chang Hisao M.
Miller James D.
Central Institute for the Deaf
Ip Paul
Shoop Jr. William M.
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