Speaker recognition with assessment of audio frame contribution

(canceled)

An apparatus for use in biometric speaker recognition comprising:

• an assessment module for determining for a sequence of frames of audio data which correspond to speech sounds uttered by a user a contribution indicator of the extent to which a frame of audio data should be used for speaker recognition processing based on at least one characteristic of the speech sound to which the frame relates, wherein said contribution indicator comprises a weighting to be applied to each frame in the speaker recognition processing.

A method of speaker recognition, comprising:

• analyzing each frame of a sequence of frames of audio data which correspond to speech sounds uttered by a user to determine at least one characteristic of the speech sound of that frame;
• and
• determining for each frame of audio data a contribution indicator of the extent to which that frame of audio data should be used for speaker recognition processing based on the determined at least one characteristic of the speech sound, wherein said contribution indicator comprises a weighting to be applied to the each frame in the speaker recognition processing.