Kendrick Paul, von Hünerbein Sabine, Cox Trevor J
Acoustics Research Centre, University of Salford, The Crescent, Salford, M5 4WT, United Kingdom
J Acoust Soc Am. 2016 Jul;140(1):EL79. doi: 10.1121/1.4955010.
Microphone wind noise can corrupt outdoor recordings even when wind shields are used. When monitoring wind turbine noise, microphone wind noise is almost inevitable because measurements cannot be made in still conditions. The effect of microphone wind noise on two amplitude modulation (AM) metrics is quantified in a simulation, showing that even at low wind speeds of 2.5 m/s errors of over 4 dBA can result. As microphone wind noise is intermittent, a wind noise detection algorithm is used to automatically find uncorrupted sections of the recording, and so recover the true AM metrics to within ±2/±0.5 dBA.
即使使用了防风罩，麦克风的风声噪音仍可能会影响户外录音。在监测风力涡轮机噪音时，由于无法在静止条件下进行测量，麦克风的风声噪音几乎是不可避免的。在一次模拟中，对麦克风风声噪音对两种调幅（AM）指标的影响进行了量化，结果表明，即使在2.5米/秒的低风速下，也可能导致超过4分贝（A）的误差。由于麦克风风声噪音是间歇性的，因此使用一种风声噪音检测算法来自动找到录音中未受影响的部分，从而将真实的调幅指标恢复到±2/±0.5分贝（A）以内。
