Patent ID: 11875799
Assignee: SOUNDAI TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. An apparatus for fusing voiceprint features, comprising:
an acquisition unit, configured to acquire at least two voiceprint features of a voice sample of a target speaker; and
a linear discriminant analysis module, connected to the acquisition unit via signal and configured to fuse the at least two voiceprint features based on a linear discriminant analysis,
wherein the acquisition unit comprises:
a universal-background-model and total-variability-space-matrix module, configured to extract an i-vector voiceprint feature, by using a universal background model and a total variability space matrix and using a voice spectrum feature of the voice sample of the target speaker as an input; and
a deep neural network module, configured to, by using a voice spectrum feature as an input, using a deep neural network with a pooling layer, calculate an average value of the pooling layer, continue to propagate forward, extract an activation value of a subsequent intermediate layer as an x-vector feature, extract an activation value from a last hidden layer, and acquire a new d-vector feature by a weighting operation.