Patent ID: 11948552
Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. The non-transitory computer-readable storage medium of claim 12, wherein the ASR network is trained by:
(a) aligning a text annotation included in a corpus with an audio file corresponding to the text annotation by using a Gaussian mixture model (GMM) to obtain a first text feature, the corpus being used for training the ASR network;
(b) extracting an N-dimensional filter-bank feature and an M-dimensional pitch feature from the audio file;
(c) splicing the N-dimensional filter-bank feature and the M-dimensional pitch feature to obtain a third speech feature;
(d) inputting the third speech feature to the ASR network and training the ASR network to obtain a second text feature outputted by an output layer of the ASR network;
(e) determining a value of cross entropy (CE) of the ASR network based on a value of the first text feature and a value of the second text feature; and
repeatedly performing steps (a)-(e) to obtain a trained ASR network when a difference between a first value of CE of the ASR network obtained through training and a second value of CE of the ASR network obtained through training at a previous time is in a first threshold range.