G - Physics – 10 – L
Patent
G - Physics
10
L
G10L 17/00 (2006.01)
Patent
CA 2228109
In a speaker recognition system, a tree-structured reference pattern memorizing unit has first through M-th node stages each of which has nodes and each of which memorizes a reference pattern of inhibiting speakers, the reference pattern of each of the nodes of (N-1)-th node stage representing acoustic features in the reference patterns of the predetermined ones of the nodes of N-th node stage. An analysis unit analyzes an input verification utterance and converts the input verification utterance into feature vectors. A similarities calculating unit calculates similarities between the feature vectors and the reference patterns of all of the inhibiting speakers. An inhibiting speaker selecting unit sorts the similarities and selects a predetermined number of inhibiting speakers. The similarities calculating unit calculates the similarities of the nodes of the first node stage and calculates the similarities of the nodes of the N-th node stage which are connected to a predetermined number of nodes of the (N-1)-th node stage selected, in order from one of the nodes of the (N-1)-th node stage having the highest similarities. The similarities calculating unit uses the similarities of the nodes of the (N- 1)-th node stage for unselected ones except the predetermined number of ones.
Hattori Hiroaki
Yamada Eiko
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
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