With the development of the digital signal processing technology, digital hearing aids have become mainstream products in the acoustic area industry. Considering some problems of shortcoming in its qualities such as real-time performance, size and power consuming, the study constructs a development platform of hearing aid based on microphone arrays to improve auditory perception. The platform uses the TMS320C6747 chip as a core CPU and TLV320AIC32 audio converter for sampling. On the platform, various source localization algorithms have been studied in detail. Furthermore, an improved method is proposed.%随着现代数字信号处理技术的发展,数字助听器已经基本成为助听器的主流.在综合考虑助听器实时性及功耗,大小等诸多要求后,提出利用麦克风阵列改善助听器听觉效果,设计了基于麦克风阵列的数字助听器系统开发平台.平台以DSP芯片TMS320C6747为核心CPU,TLV320A1C32为音频AD采样芯片.在该平台上,对声源定位算法做了详细研究,提出了提高语音质量的方法.
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