Dual-rate single band communication system
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United States of America Patent
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Oct 20, 2009
Grant Date -
Apr 1, 2004
app pub date -
Dec 16, 2002
filing date -
Sep 27, 2002
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Abstract
A system, method, and apparatus for a multiple data rate communication system is presented herein. The communication system receives data samples that are either sampled at a narrowband rate or a wideband rate and provides various functions and services, such as echo cancellation, DTMF detection and generation, and call discrimination. For wideband signals, a down-sampled signal is provided for each of the foregoing function and service. The output of the function or services is then recombined with the wideband signal.
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