Wilson D Keith, Greenfield Roy J, White Michael J
US Army Engineer Research and Development Center, Cold Regions Research and Engineering Laboratory, 72 Lyme Rd., Hanover, New Hampshire 03755, USA.
J Acoust Soc Am. 2007 Dec;122(6):EL223-8. doi: 10.1121/1.2786608.
The distinguishing spatial properties of low-frequency microphone wind noise (turbulent pressure disturbances) are examined with a planar, 49-element array. Individual, propagating transient pressure disturbances are imaged by wavelet processing to the array data. Within a given frequency range, the wind disturbances are much smaller and less spatially coherent than sound waves. Conventional array processing techniques are particularly sensitive to wind noise when sensor separations are small compared to the acoustic wavelengths of interest.
使用一个平面49元阵列研究了低频麦克风风噪声（湍流压力干扰）独特的空间特性。通过小波处理对阵列数据进行成像，以获取单个传播的瞬态压力干扰。在给定的频率范围内，风干扰比声波小得多且空间相干性更低。当传感器间距与感兴趣的声波波长相比很小时，传统的阵列处理技术对风噪声特别敏感。
