Separation of non-stationary sound fields with single layer pressure-velocity measurements

• DOI: 10.1121/1.4941654
• Publication Date: 2016-02-12T03:09:54Z
• Authors: Chuan-Xing Bi; Lin Geng; Xiao-Zheng Zhang
• Keywords: Particle velocity; Convolution (computer science); Impulse response

This paper examines the feasibility of extracting non-stationary sound field generated by a target source in presence disturbing from single layer pressure-velocity measurements. Unlike method described previous [Bi, Geng, and Zhang, J. Acoust. Soc. Am. 135(6), 3474–3482 (2014)], proposed allows measurements pressure particle velocity signals on plane instead two planes, time-dependent is extracted simple superposition measured convolution between corresponding impulse response function. Because here directly, error caused finite difference approximation can be avoided, which makes it possible to perform separation better than method. In this paper, Microflown probe used experimental measurements, calibration procedure time domain given. The results demonstrate that effective desired mixed one both space domains, obtains more accurate