Patent ID: 7379875
Filing Date: 2008-05-27
Classification: G06F,G06K,G10H,G10L,G11B,Y10S

Abstract:
1. A system for summarizing audio information, comprising: an analyzer to convert audio into frames; a fingerprinting component to convert the frames into fingerprints, each fingerprint based in part on a plurality of frames; a similarity detector to compute similarities between fingerprints, the similarity detector comprising a clustering function, the clustering function producing one or more sets of clusters of fingerprints based upon all fingerprints within a set of clusters meeting an initial threshold indicative of similarity; a heuristic module to generate a thumbnail of the audio file from a set of clusters that has at least two gaps between fingerprints, wherein a gap is a temporal space between two adjacent fingerprints that exceeds a predetermined threshold when fingerprints within a set of clusters are placed in sequential temporal order, the heuristic module comprising a flatness component in order to determine a suitable segment of audio for the thumbnail, the flatness component employs a number that is added to spectral magnitudes for each frequency component, to mitigate numerical problems when determining logs.