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

Claim 10:
11. A voice recognition method, comprising:
acquiring at least two voiceprint features of a voice sample of a target speaker;
fusing the at least two voiceprint features based on a linear discriminant analysis; and
identifying the identity of the target speaker based on the fused at least two voiceprint features,
wherein acquiring at least two voiceprint features of the voice sample of the target speaker comprises:
acquiring a voice spectrum feature of the voice sample of the target speaker;
extracting an i-vector voiceprint feature, by using a universal background model and a total variability space matrix and using the voice spectrum feature as an input; and
extracting an x-vector voiceprint feature and a d-vector voiceprint feature by using a deep neural network, and

wherein extracting the x-vector voiceprint feature and the d-vector voiceprint feature by using the deep neural network, comprises:
adding a pooling layer to the deep neural network, calculating an average value of the pooling layer, continuing to propagate forward, and extracting an activation value of a subsequent intermediate layer as the x-vector voiceprint feature; and
extracting an activation value from a last hidden layer of the deep neural network, and then acquiring the d-vector voiceprint feature by accumulating and calculating an average value of the activation value.