Method and system for sub-audible signaling
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United States of America Patent
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Jul 12, 2016
Grant Date -
Jan 22, 2015
app pub date -
Jul 21, 2014
filing date -
Oct 25, 2012
priority date (Note) -
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Abstract
Disclosed are various embodiments for a system and method for encoding sub-audible codes within a signal. One exemplary embodiment includes a method that includes receiving a first digital code and a second digital code; receiving a first block and a second block of a signal; embedding an echo of the first block of the signal in the second block of the signal to create a first modified second block of the signal in accordance with the first digital code; modulating the power of the first modified second block of the signal to create a second modified second block of the signal in accordance with the second digital code; and sending a modified signal including the second modified second block of the signal.
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