Research on English pronunciation training based on intelligent speech recognition

When learning English, Chinese students tend to spend a lot of time in practicing reading and writing skills, while neglecting their ability to speak English. This study presented a speech recognition-based intelligent spoken English pronunciation training system which took Mel Frequency Cepstral Coefficients as the characteristic parameter of speech signal and introduced deep neural network algorithm to improve the accuracy of speech recognition. Taking tone, speech speed and intonation as the evaluation criteria, a simulation experiment of artificial evaluation and machine evaluation was carried out. The results demonstrated that deep neural network had high speech recognition rate, and the three evaluation criteria were reliable, which provides a reference for the development of spoken English learning system.