Efficient convolution method and apparatus
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United States of America Patent
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Jun 3, 2003
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N/A
app pub date -
Jun 22, 2001
filing date -
Dec 23, 1998
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Abstract
A convolution method and apparatus of time domain convolving an input signal with a second signal is disclosed comprising the steps of; dividing the second signal into a series of segments; determining a magnitude envelope for each of the segments; scaling the signal values within each segments relative to the envelope to produce corresponding segment scaled signal values; multiplying the segment scaled values by a corresponding input signal value to produce corresponding segment output values; scaling the segment output values by a segment scale factor to produce corresponding scaled segment outputs; and adding the scaled segment output to produce a time domain output.
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