Method of identifying duplicate voice recording

Details Method of identifying duplicate voice recording Method of identifying duplicate voice recording

2006-08-17

2009-08-04

Sked, Matthew J (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S201000, C704S239000, C704S270000, C707S793000

Reexamination Certificate

active

07571093

ABSTRACT:
A method of identifying duplicate voice recording by receiving digital voice recordings, selecting one of the recordings; segmenting the selected recording, extracting a pitch value per segment, estimating a total time that voice appears in the recording, removing pitch values that are less than and equal to a user-definable value, identifying unique pitch values, determining the frequency of occurrence of the unique pitch values, normalizing the frequencies of occurrence, determining an average pitch value, determining the distribution percentiles of the frequencies of occurrence, returning to the second step if additional recordings are to be processed, otherwise comparing the total voice time, average pitch value, and distribution percentiles for each recording processed, and declaring the recordings duplicates that compared to within a user-definable threshold for total voice time, average pitch value, and distribution percentiles.

REFERENCES:
patent: 6067444 (2000-05-01), Cannon et al.
patent: 6766523 (2004-07-01), Herley
patent: 7035867 (2006-04-01), Thompson et al.
patent: 7120581 (2006-10-01), Kahn et al.
patent: 7421305 (2008-09-01), Burges et al.
patent: 2005/0182629 (2005-08-01), Coorman et al.

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