Recognizer of digital signal content
First Claim
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1. A computer-implemented method for hashing a digital signal, comprising:
- transforming the digital signal into a digital signal transform;
randomly dividing the digital signal transform into multiple chunks, each chunk containing signal data;
averaging, for each of the chunks, the signal data to produce corresponding chunk averages;
generating, based in part on the chunk averages, an exponential distribution having multiple distinct quantization levels;
randomly rounding each of the chunk averages to one of the quantization levels to produce rounded values; and
hashing a composite of the rounded values.
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Abstract
Described herein is a technology for recognizing the content of digital signals. The technology determines one or more hash values for the original content of a digital signal. The scope of the present invention is pointed out in the appending claims.
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8 Claims
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1. A computer-implemented method for hashing a digital signal, comprising:
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transforming the digital signal into a digital signal transform;
randomly dividing the digital signal transform into multiple chunks, each chunk containing signal data;
averaging, for each of the chunks, the signal data to produce corresponding chunk averages;
generating, based in part on the chunk averages, an exponential distribution having multiple distinct quantization levels;
randomly rounding each of the chunk averages to one of the quantization levels to produce rounded values; and
hashing a composite of the rounded values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification