Adaptive transform coder having minimal bit allocation processing
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United States of America Patent
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Oct 16, 1990
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N/A
app pub date -
May 26, 1988
filing date -
May 26, 1988
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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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