论文部分内容阅读
利用麦克风阵列进行音频信号方位检测是一个十分活跃的研究领域,在工程应用中具有重要意义。本文采用相位交换(PHAT)作为加权函数的广义互相关算法(GCC)完成时延差估计,最后使用到达时延差的算法估计声源方位,并在算法模型的基础上搭建基于数字信号处理器的四通道声源定位硬件系统开发平台。实验结果表明,在实验室环境中,该系统的角度定位精度基本上能够控制在一个较小的范围内,具有比较强的应用性和稳定性。
The use of microphone array for audio signal detection is a very active field of research, in engineering applications of great significance. In this paper, the phase shift (PHAT) is used as the weighting function of the generalized cross-correlation algorithm (GCC) to complete the delay estimation, and finally the arrival delay estimation algorithm is used to estimate the sound source orientation. Based on the algorithm model, a digital signal processor Four-channel sound source positioning hardware system development platform. Experimental results show that in the laboratory environment, the system’s angle positioning accuracy can be basically controlled in a smaller range, with strong applicability and stability.