Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1988-05-26
1990-10-16
Harkcom, Gary V.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 36, 381 37, 381 40, G10L 302
Patent
active
049641662
ABSTRACT:
Adaptive transform coding of a speech signal by a single digital signal processing chip is performed at low bit rates with reduced quantization noise and distortion. A windowed speech signal is transformed and quantized. New processes are shown for generating envelope information as well as bit allocation which control quantization. The quantized signal and necessary side information are formatted for transmission and subsequent decoding.
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Harkcom Gary V.
Knepper David D.
Pacific Communication Science, Inc.
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