Emphasis of short-duration transient speech features
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United States of America Patent
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Oct 28, 2008
Grant Date -
May 24, 2007
app pub date -
Jan 18, 2007
filing date -
Oct 26, 1999
priority date (Note) -
Expired
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Abstract
A sound processor including a microphone (1), a pre-amplifier (2), a bank of N parallel filters (3), means for detecting short-duration transitions in the envelope signal of each filter channel, and means for applying gain to the outputs of these filter channels in which the gain is related to a function of the second-order derivative of the slow-varying envelope signal in each filter channel, to assist in perception of low-intensity sort-duration speech features in said signal.
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