Signal processor
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United States of America Patent
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-
Apr 22, 1986
Grant Date -
N/A
app pub date -
May 30, 1984
filing date -
May 30, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus for processing a composite noise signal containing sonic and ultrasonic components generally in a frequency range of about 20 Hz-100 KHz to make audible both components of the signal includes a heterodyne circuit operable in response to a rectangular wave local oscillator signal to produce output signals which are within the frequency range of human hearing.
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