SYSTEM AND METHOD TO IMPROVE PRECISION AND RECALL OF PROTOTYPICAL NETWORKS FOR SOUND EVENT DETECTION
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United States of America
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Issued Date -
Mar 13, 2025
app pub date -
Sep 8, 2023
filing date -
Sep 8, 2023
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Abstract
A method of training a prototypical network for sound event detection includes receiving samples of an audio signal that include positive samples corresponding to sound events and negative samples that do not correspond to sound events, determining, based on the positive samples, respective positive prototypes of a plurality of classes of sound events, determining, based on the negative samples, respective negative prototypes for respective groups of the negative samples, each of the negative prototypes corresponding to a combination of a plurality of the negative samples, and generating, based on comparisons between a first sample and the respective positive prototypes and each of the negative prototypes, an output signal that indicates whether the first sample belongs to one of the plurality of classes of sound events.
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