Mobile devices are often used in our daily lives for the purposes of speech and\ncommunication. The speech quality of mobile devices is always degraded due to the environmental\nnoises surrounding mobile device users. Regretfully, an effective background noise reduction solution\ncannot easily be developed for this speech enhancement problem. Due to these depicted reasons,\na methodology is systematically proposed to eliminate the effects of background noises for the speech\ncommunication of mobile devices. This methodology integrates a dual microphone array with a\nbackground noise elimination algorithm. The proposed background noise elimination algorithm\nincludes a whitening process, a speech modelling method and an H2 estimator. Due to the adoption\nof the dual microphone array, a low-cost design can be obtained for the speech enhancement of\nmobile devices. Practical tests have proven that this proposed method is immune to random\nbackground noises, and noiseless speech can be obtained after executing this denoise process.
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