PatentDOI
System and methods for recognizing sound and music signals in high noise and distortion
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TLDR
In this article, the authors proposed a method for recognizing audio samples that locates an audio file that most closely matches the audio sample from a database indexing a large set of original recordings, where each indexed audio file is represented in the database index by a set of landmark timepoints and associated fingerprints.Abstract:
A method for recognizing an audio sample locates an audio file that most closely matches the audio sample from a database indexing a large set of original recordings. Each indexed audio file is represented in the database index by a set of landmark timepoints and associated fingerprints. Landmarks occur at reproducible locations within the file, while fingerprints represent features of the signal at or near the landmark timepoints. To perform recognition, landmarks and fingerprints are computed for the unknown sample and used to retrieve matching fingerprints from the database. For each file containing matching fingerprints, the landmarks are compared with landmarks of the sample at which the same fingerprints were computed. If a large number of corresponding landmarks are linearly related, i.e., if equivalent fingerprints of the sample and retrieved file have the same time evolution, then the file is identified with the sample. The method can be used for any type of sound or music, and is particularly effective for audio signals subject to linear and nonlinear distortion such as background noise, compression artifacts, or transmission dropouts. The sample can be identified in a time proportional to the logarithm of the number of entries in the database; given sufficient computational power, recognition can be performed in nearly real time as the sound is being sampled.read more
Citations
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Direction of arrival estimation and sound source enhancement in the presence of a reflective surface apparatuses, methods, and systems
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Methods and apparatus to facilitate meter to meter matching for media identification
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Apparatus and method for measuring quality of audio
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TL;DR: In this article, an apparatus and method for measuring quality of audio is presented, which includes a distorted signal generation unit, an extraction unit, a distortion level measurement unit and a distortion function generation unit.
References
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Journal ArticleDOI
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Proceedings ArticleDOI
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Journal ArticleDOI
An overview of audio information retrieval
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