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Open AccessArticle

Speech Enhancement of Mobile Devices Based on the Integration of a Dual Microphone Array and a Background Noise Elimination Algorithm

Department of Systems and Naval Mechatronic Engineering, National Cheng Kung University, Tainan City 701, Taiwan
Sensors 2018, 18(5), 1467; https://doi.org/10.3390/s18051467
Received: 19 March 2018 / Revised: 29 April 2018 / Accepted: 3 May 2018 / Published: 8 May 2018
(This article belongs to the Special Issue Selected Papers from IEEE ICICE 2017)
Mobile devices are often used in our daily lives for the purposes of speech and communication. The speech quality of mobile devices is always degraded due to the environmental noises surrounding mobile device users. Regretfully, an effective background noise reduction solution cannot easily be developed for this speech enhancement problem. Due to these depicted reasons, a methodology is systematically proposed to eliminate the effects of background noises for the speech communication of mobile devices. This methodology integrates a dual microphone array with a background noise elimination algorithm. The proposed background noise elimination algorithm includes a whitening process, a speech modelling method and an H2 estimator. Due to the adoption of the dual microphone array, a low-cost design can be obtained for the speech enhancement of mobile devices. Practical tests have proven that this proposed method is immune to random background noises, and noiseless speech can be obtained after executing this denoise process. View Full-Text
Keywords: speech enhancement; estimator design; background noise reduction; mobile device speech enhancement; estimator design; background noise reduction; mobile device
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Chen, Y.-Y. Speech Enhancement of Mobile Devices Based on the Integration of a Dual Microphone Array and a Background Noise Elimination Algorithm. Sensors 2018, 18, 1467.

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