Electronic filters, signal conversion apparatus, hearing aids and methods
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United States of America Patent
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May 5, 1992
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N/A
app pub date -
Apr 11, 1988
filing date -
Mar 23, 1988
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Expired
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Abstract
An electronic filter for filtering an electrical signal. Signal processing circuitry therein includes a logarithmic filter having a series of filter stages with inputs and outputs in cascade and respective circuits as GOVERNMENT SUPPORT This invention was made with U.S. Government support under Veterans Administration Contract VA KV 674P857 and National Aeronautics and Space Administration (NASA) Research Grant No. NAG10-0040. The U.S. Government has certain rights in this invention.
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