Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1987-10-08
1989-02-28
Shoop, Jr., William M.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 42, 381 41, 381 44, 3645135, G10L 100
Patent
active
048093327
ABSTRACT:
Speech processing apparatus including an electronic memory and circuitry that derives from speech sets of digital values representative of frequency spectra. The spectra have peaks at frequencies associated therewith. The peaks include a highest magnitude peak for each spectrum. The circuitry also generates an auditory state signal representing the presence or absence of a burst-friction auditory state of the speech. Circuitry further electronically identifies, when the auditory state signal indicates the presence of a burst-friction auditory state, the highest magnitude peak for each spectrum as well as each peak having a magnitude within a range of magnitudes less than the magnitude of the highest magnitude peak, and selectively stores in distinct locations in the memory, respectively representative of normally occurring prominences of a burst-friction sound, the values of frequency of the lowest two frequencies associated with the identified peaks. Other speech processing apparatus and methods are also disclosed.
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Jongman Allard
Miller James D.
Central Institute for the Deaf
Ip Paul
Shoop Jr. William M.
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