Wireless microphone having a split-band audio frequency companding system that provides improved noise reduction and sound quality
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United States of America Patent
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Aug 9, 2005
Grant Date -
N/A
app pub date -
Nov 2, 2000
filing date -
Nov 2, 2000
priority date (Note) -
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Abstract
A wireless microphone having a split-band audio frequency companding system is disclosed. The companding system includes a compression circuit in which one amplification element is utilized in connection with a number of frequency bands. Each frequency band has a rectifier and filter element associated therewith. High-pass filter elements are utilized in the higher frequency bands of the compression and expander circuits to reduce the transfer of low-frequency signals to the rectifier elements that process the low-frequency signals, thereby reducing undesirable modulations of a variable resistance element associated therewith.
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