Design of wireless audio transmission system for college English language teaching

Article type: Research Article

Authors: Li, Huaqiang

Affiliations: School of Foreign Language, Xinxiang College, Xinxiang, Henan 453000, China | E-mail: huaqianglidavid1@sina.com

Correspondence: [*] Corresponding author: School of Foreign Language, Xinxiang College, Xinxiang, Henan 453000, China. E-mail: huaqianglidavid1@sina.com.

Abstract: In the past, the use of wireless microphone was affected by overload noise, resulting in incomplete transmission of teaching content. In order to solve this problem, a wireless audio transmission system design for College English language teaching is proposed. The overall architecture of SEP6010 wireless voice system is designed, which is output by PWM channel to complete voice playback. UDA1341TS low-power stereo analog-to-digital converter is used to control audio transmission. The voice circuit is designed by adding clock signal or internal programmable clock. The A/D conversion module is used to amplify the collected signal, and the original voice signal is restored through the audio playback module. MATLAB is used to simulate the process of encoding, decoding and filtering. According to CVSD quantization integral coding algorithm, the quantization noise is reduced to a given allowable value. Start Audacity software to complete wireless audio transmission. The experimental results show that the highest transmission teaching content integrity of the system under single frequency input is 98%, and the highest transmission teaching content integrity under mixing input is 93%.

Keywords: College English, language teaching, wireless audio, transmission

DOI: 10.3233/JCM-215558

Journal: Journal of Computational Methods in Sciences and Engineering, vol. 21, no. 6, pp. 1973-1983, 2021