Patent ID: 9704507
Date: 2017-07-11
CPC Classifications: G10L

Claim:
1. A method for reducing latency in identification of an audio work in an audio stream received in an audio recognition system, the method comprising: receiving, in a reference-fingerprint generator, a reference audio content associated with an audio work; generating, in the reference-fingerprint generator, a modified reference audio content by prepending a selected audio content to the reference audio content; computing, in the reference-fingerprint generator, at least one modified-reference fingerprint from the modified reference audio content using an analysis window comprising a portion of the prepended, selected audio content; storing, in a database communicatively coupled to the reference-fingerprint generator, the at least one modified-reference fingerprint; receiving, in an audio recognition system, an audio stream; sampling, in the audio recognition system, the audio stream in real time; computing, in the audio recognition system, at least one fingerprint from the samples of the audio stream; comparing, in the audio recognition system, the at least one fingerprint generated from the samples of the audio stream with the at least one modified-reference fingerprint stored in the database; and when a first fingerprint from the at least one fingerprint generated from the samples of the audio stream substantially matches a second fingerprint from the at least one modified-reference fingerprint, identifying that the audio stream comprises the audio work.