Methods and apparatus to perform audio watermarking and watermark detection and extraction
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United States of America Patent
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Feb 22, 2022
Grant Date -
May 7, 2020
app pub date -
Nov 1, 2019
filing date -
Oct 24, 2008
priority date (Note) -
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Abstract
Methods and apparatus to audio watermarking and watermark detection and extracted are described herein. An example method includes receiving a media content signal, sampling the media content signal to generate samples, storing the samples in a buffer, determining a first sequence of samples in the buffer, determining a second sequence of samples in the buffer, wherein the second sequence of samples is of substantially equal length as the first sequence of samples, calculating an average of the first sequence of samples and the second sequence of samples to generate an average sequence of samples, extracting an identifier from the average sequence of samples, and storing the identifier in a tangible memory.
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