Speaker recognition using dynamic time warp template spotting

An improved template spotting technique may be implemented as part of text dependent speaker verification system to authenticate a user of a wireless communication device. This technique may be suitable for use in noisy environments and for wireless communication devices with limited processing powe...

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Bibliographic Details
Main Author ARONOWITZ HAGAI
Format Patent
LanguageEnglish
Published 23.10.2003
Edition7
Subjects
ACOUSTICS
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
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Summary:An improved template spotting technique may be implemented as part of text dependent speaker verification system to authenticate a user of a wireless communication device. This technique may be suitable for use in noisy environments and for wireless communication devices with limited processing power. Endpoints of a test utterance are identified by first computing local distances between test frames and a target template. Accumulated distances are then computed from the local distances. Endpoints of the utterance may be identified when one or more of the accumulated distances is below a predetermined threshold. Once endpoints of a test utterance are identified, a dynamic time warp (DTW) process may be used to determine whether the test utterance matches a training template. One embodiment of the present invention aligns multiple training templates to reduce the probability of failing to verify the identity of a speaker that should have been properly verified.
Bibliography:Application Number: US20020128725