Kwan Leung Cheung

US Patent:

7328153, Feb 5, 2008

Filed:

Jul 22, 2002

Appl. No.:

10/200034

Inventors:

Maxwell Wells - Seattle WA, US
Vidya Venkatachalam - Bellevue WA, US
Luca Cazzanti - Bellevue WA, US
Kwan Fai Cheung - Bellevue WA, US
Navdeep Dhillon - Seattle WA, US
Somsak Sukittanon - Seattle WA, US

Assignee:

Gracenote, Inc. - Emeryville CA

International Classification:

G10L 11/00
G10L 15/00

US Classification:

704231, 704238, 704243, 704270, 704273

Abstract:

Copies of original sound recordings are identified by extracting features from the copy, creating a vector of those features, and comparing that vector against a database of vectors. Identification can be performed for copies of sound recordings that have been subjected to compression and other manipulation such that they are not exact replicas of the original. Computational efficiency permits many hundreds of queries to be serviced at the same time. The vectors may be less than 100 bytes, so that many millions of vectors can be stored on a portable device.

US Patent:

7881931, Feb 1, 2011

Filed:

Feb 4, 2008

Appl. No.:

12/025373

Inventors:

Maxwell Wells - Seattle WA, US
Vidya Venkatachalam - Bellevue WA, US
Luca Cazzanti - Bellevue WA, US
Kwan Fai Cheung - Bellevue WA, US
Navdeep Dhillon - Seattle WA, US
Somsak Sukittanon - Seattle WA, US

Assignee:

Gracenote, Inc. - Emeryville CA

International Classification:

G10L 15/06

US Classification:

704243, 704245

Abstract:

Copies of original sound recordings are identified by extracting features from the copy, creating a vector of those features, and comparing that vector against a database of vectors. Identification can be performed for copies of sound recordings that have been subjected to compression and other manipulation such that they are not exact replicas of the original. Computational efficiency permits many hundreds of queries to be serviced at the same time. The vectors may be less than 100 bytes, so that many millions of vectors can be stored on a portable device.