End-Fire Microphone Array Based on Phase Difference Enhancement Algorithm
This paper proposes a dual-microphone end-fire array directivity enhancement method based on phase difference enhancement algorithm. This method passes, without distortion, all signal components within a specified angle range of incidence from the desire direction, and attenuates the interference signals outside this range, i.e., without an undesired backward lobe existing in the prior work using a broadside microphone array to receive sound signal. Reconsidering the relation between the phase difference and attenuation, a method to double the maximum operating frequency in a conventional end-fire array is also provided.
component end-fire array directivity phase difference phase difference enhancement
Yu Jingzhou Li Shuangtian
Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190, China
国际会议
2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)
北京
英文
486-489
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）