Patent ID: 9653094
Date: 2017-05-16
CPC Classifications: G06F,G10L,H04H

Claim:
1. A method of processing audio signals to identify content, the method comprising: receiving digitized audio content; decoding the audio content using a decoder; segmenting frames of the decoded audio content by applying a windowing function to a given audio frame using a first window type having a time width approximately equal to a delay time of the decoder; calculating an estimate of a power spectrum of a given frame; applying a mel filter bank to the power spectrum of the given frame and providing resulting filter bank energies; applying a DCT matrix to the resulting filter bank energies to generate a DCT output; taking a log of the DCT output to generate a mel coefficient 1; dynamically calculating a first threshold for the content; and utilizing the mel coefficient 1 and the dynamically calculated first threshold to detect a near silence between content of different types and to identify the types of content separated by the near silence.