Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1987-04-08
1991-03-19
Harkcom, Gary V.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 40, 381 49, G10L 302
Patent
active
050017586
ABSTRACT:
The voice signal is analyzed to derive therefrom a low frequency base band signal, linear prediction coefficients and high frequency (HF) descriptors. Said HF descriptors include HF energy indications as well as indications relative to the phase shift between the low frequency and the high frequency band. Said HF descriptors are used during the voice synthesis operation to provide an inphase HF bandwidth component to be added to the base band prior to be used for driving a linear prediction synthesis filter tuned using said linear prediction parameters.
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Galand Claude
Menez Jean
Frisone John B.
Harkcom Gary V.
International Business Machines - Corporation
Knepper David D.
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