ENVIRONMENTAL NOISE REDUCTION AND CANCELLATION FOR A COMMUNICATION DEVICE INCLUDING FOR A WIRELESS AND CELLULAR TELEPHONE
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United States of America Patent
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app pub date -
Jun 9, 2010
filing date -
May 17, 2007
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Abandoned
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Abstract
Various embodiments of the present invention enable a system and method for reducing or entirely canceling background or environmental noise from a voice transmission from a communications device. A communications device, such as a mobile telephone, is configured with an environmental noise compensation, correction, or counterbalanced (correction) signal generator that is connected between at least one microphone and a continuous time quadrant multiplication. Optional discrete time or digital signal processing may be applied. The original output of the at least one microphone and a compensation, correction, or counterbalanced or counter-balancing signal generated by the environmental noise compensation, correction, or counterbalanced signal generator are mixed or otherwise combined together after being received by the antenna to the receiver.
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