Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition
Reexamination Certificate
2003-07-22
2008-08-05
Hudspeth, David R. (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
Recognition
C704S231000, C704S234000, C704S250000
Reexamination Certificate
active
07409343
ABSTRACT:
During a learning phase, a speech recognition device generates parameters of an acceptance voice model relating to a voice segment spoken by an authorized speaker and a rejection voice model. It uses normalization parameters to normalize a speaker verification score depending on the likelihood ratio of a voice segment to be tested and the acceptance model and rejection model. The speaker obtains access to a service application only if the normalized score is above a threshold. According to the invention, a module updates the normalization parameters as a function of the verification score on each voice segment test only if the normalized score is above a second threshold.
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France Telecom
Hudspeth David R.
Lowe Hauptman & Ham & Berner, LLP
Rider Justin W
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