AI-powered speech training model for business-oriented english learners

With the increasing level of internationalization, traditional foreign language training methods cannot satisfy the current requirement for compound talents’ foreign language abilities in the business environment. Based on this, this study combines artificial intelligence technology to propose an intelligent English training conversation model based on speech recognition and multi-feature parameters. The experimental results demonstrated that: first, in terms of model performance, the prediction accuracy of the training set and verification set reached 0.968 and 0.975, respectively. The word error rate in the cross dataset test was 12%-18% lower than that of the baseline method, and the processing time (4.5s/5.0s/5.7s) of single/double/multi-syllable processing of student groups was increased by more than 20%. Second, regarding speech recognition performance, the single syllable recognition rate was 96.6%, the multi-syllable recognition rate was 94.8%, and the feedback correction efficiency was as high as 98%. The difference from manual scoring was controlled within 0.5 (single syllable) and 0.25 (double/multi-syllable). Third, in the platform testing of application verification, learners’ English application ability in business scenarios improved by 28%, while the multi-syllable recognition rate of social groups (94.6%) and student groups differed by less than 2%. The research conclusion showed that the model achieved breakthroughs in speech recognition accuracy (> 94.8%), real-time response (< 5.8s), and teaching adaptability through a multi-feature dynamic feedback mechanism. The research model could significantly improve the scenario-based ability of business negotiation terminology application (such as increasing the accuracy of contract terms expression by 19%), providing quantifiable and practical intelligent training solutions for business foreign language teaching.