24/06/2005 - Controller General of Patents, Designs, and Trade Marks

Publication After 18 months
The following Patent application have been published under Section 11A of the Patents
(Amendment) Act, 2005
(21) Application No.: 584/MUMNP/2004
(PCT/US03/12126)
A (22) Date of filing of Application: 19/10/2004
(54) Title of the invention: ROBUST AND INVARIANT AUDIO PATTERN MATCHING.
(51) International classification: G10L 21/00 (71)
(30) Priority Data:
(31) Document No: 60/376,055
(32) Date: 25.04.2002
(33) Name of convention country: US
(66) Filed U/s. 5(2): NO.
(61) Patent of addition to application No.: NIL (72)
(62) Filed on: N.A.
(63) Divisional to Application No.: NIL
(64) Filed on: N.A.
(57) Abstract: The present invention provides an
innovative technique for rapidly and accurately
determining whether two audio samples match, as
well as being immune to various kinds of
transformations, such as playback speed variation.
The relationship between the two audio samples is
characterized by first matching certain fingerprint
objects derived from the respective samples. A set
(230) of fingerprint objects (231, 232), each
occurring at a particular location (242), is generated
for each audio sample (210). Each location is
determined in dependence upon the content of
respective audio sample (210) and each fingerprint
object (232) characterizes one or more local
features (222) at or near the respective particular
location (242). A relative value is next determined
for each pair of matched fingerprint objects. A
histogram of the relative values is then generated. If
a statistically significant peak is found, the two
audio samples can be characterized as substantially
matching.
Figure:1
Name of the Applicant:
SHAZAM ENTERTAINMEN
LTD
Address of the Applicant:
C/O IDG VENTURES EUROPES, 2
CAVENDISH SQUARE,
LONDON W1G OPD,
UNITED KINGDOM
Name of the Inventors:
1) WANG, AVERY LI-CHUN
2) CULBERT, DANIEL
The Patent Office Journal 24.06.2005 17982