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随着电子通信的逐渐普及,高质量高稳定性的通信需求促使阵列信号处理研究的产生和日益壮大,尤其是语音信号处理。在飞利浦P89LPC936型号芯片的基础上,加上音频采集电路和模拟输出电路以及单片机串口通信电路,搭建了基于51单片机的麦克风阵列时延估计硬件系统。然后对自相关与互相关算法进行改进,让其通过单片机能够非实时地计算出实验中的阵列系统时延。有助于复杂的语音阵列信号处理中时延估计实时性的研究。
With the gradual popularization of electronic communication, high-quality and high-stability communication demand has led to the emergence and growing of array signal processing research, especially speech signal processing. On the basis of the Philips P89LPC936 chip, together with the audio acquisition circuit and analog output circuit and the serial communication circuit of the microcontroller, a hardware system of the microphone array time delay estimation based on 51 single-chip microcomputer is set up. Then, the autocorrelation and cross-correlation algorithms are improved, which makes it possible to calculate the delay of the array system experimentally by using the single chip microcomputer. Research on Time Delay Estimation in Signal Processing of Complex Speech Arrays.