SPEECH RECOGNITION METHOD AND SYSTEM FOR POWER GRID DISPATCHING

WIPO Patent Application WO/2023/036017

A1

A speech recognition method and system for power grid dispatching. The method comprises: acquiring an original speech signal in power grid dispatching; performing noise reduction pre-processing on the original speech signal; performing a fast Fourier transform (FFT) on the original speech signal subjected to noise reduction pre-processing; performing, by using a Mel frequency cepstral coefficient (MFCC), feature extraction on the original speech signal subjected to the FFT; combining a deep learning neural network (DNN) and a long short-term memory (LSTM) neural network to obtain a combined neural network DNN-LSTM algorithm, and performing, by using the algorithm, acoustic model training on the original speech signal subjected to feature extraction; and searching for an optimal text output result by using a decoder and on the basis of an acoustic model output result, a speech model and a dictionary.

MO ZIYING (CN)
ZHU MINGZENG (CN)
QIN QIUQIN (CN)
LV MING (CN)
LIU XIAOLAN (CN)
CHEN JIWAN (CN)
HAN JING (CN)
LI HEFENG (CN)
JIANG ZHIRU (CN)
QIN JINGTAO (CN)
HUANG JIN (CN)
LU YING (CN)
WEI XIAOMING (CN)
LI MEI (CN)
ZHOU SUJUN (CN)
LIANG WEI (CN)
LUO CHENYI (CN)
LIANG HAO (CN)
FENG HUA (CN)

PCT/CN2022/115883

March 16, 2023

August 30, 2022

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HEZHOU POWER SUPPLY BUREAU GUANGXI POWER GRID CO LTD (CN)

G10L15/16; G06N3/08; G06Q50/06; G10L15/02; G10L15/05; G10L15/06; G10L15/20; G10L15/26; G10L21/0208; G10L25/24

GUANGZHOU CONCENTRATE INNOVATIONS PATENT AGENCY CO., LTD. (CN)

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