基于虚拟现实的英语口语发音质量评分系统设计

Design of voice quality scoring system for spoken English based on virtual reality

采用现有系统对英语口语发音质量进行评分时,只考虑到语调、音准和节奏等指标,没有考虑到语音情感的作用,并且评分效果较差、效率不高,因此设计一种基于虚拟现实的英语口语发音质量评分系统.评分系统硬件部分由主界面模块、用户登录模块、电源电路模块、指令接收与转发模块及中心操作模块构成,在各硬件模块的作用下能够降低系统在运行过程中的故障率,并能够保证用户使用的安全性.在硬件设计的基础上,运用PID算法对口语发音中的语音情感要素进行分层次提取,根据提取结果采用定量递归分析方法对英语口语发音质量进行综合评估,最终获取评分结果.分析实验结果可知,与传统系统相比,运用设计的评分系统所得到的结果更加全面,能够满足用户多方面需求,并且评分及时性较高,说明该系统达到了预期效果,可以解决用户的实际需求.

When using the existing system to score the quality of spoken English pronunciation,only the intonation,pitch and rhythm are taken into account,and the role of voice emotion is not taken into account.Moreover,the scoring effect is poor and the efficiency is not high.Therefore,a virtual reality-based system for evaluating the quality of spoken English pronunciation is designed.The hardware part of the scoring system is composed of main interface module,user login module,power circuit module,instruction receiving and forwarding module and central operation module.Under the function of each hardware module,the failure rate of the system in operation can be reduced,and the security of users can be guaranteed.On the basis of hardware design,the emotional factors of spoken English pronunciation are extracted hierarchically by using PID algorithm.According to the extracted results,the quality of spoken English pronunciation is evaluated comprehensively by using quantitative recursive analysis method,and the final score result is obtained.The analysis of the experimental results shows that,compared with the traditional system,the scoring results obtained by using the proposed system are more comprehensive,can meet the needs of users in many aspects,and the scoring timeliness is higher,which shows that the system achieves the desired effect and can solve the actual needs of users.