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A statistical background noise correction sensitive to the steadiness of background noise

机译:对背景噪声稳定性敏感的统计背景噪声校正

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摘要

A statistical background noise correction is developed for removing background noise contributions from measured source levels, producing a background noise-corrected source level. Like the standard background noise corrections of ISO 3741, ISO 3744, ISO 3745, and ISO 11201, the statistical background correction increases as the background level approaches the measured source level, decreasing the background noise-corrected source level. Unlike the standard corrections, the statistical background correction increases with steadiness of the background and is excluded from use when background fluctuation could be responsible for measured differences between the source and background noise levels. The statistical background noise correction has several advantages over the standard correction: (1) enveloping the true source with known confidence, (2) assuring physical source descriptions when measuring sources in fluctuating backgrounds, (3) reducing background corrected source descriptions by 1 to 8 dB for sources in steady backgrounds, and (4) providing a means to replace standardized background correction caps that incentivize against high precision grade methods. VC 2016 Acoustical Society of America.
机译:开发统计背景噪声校正,用于从测量的源电平中移除背景噪声贡献,产生背景噪声校正源电平。与ISO 3741,ISO 3744,ISO 3745和ISO 11201的标准背景噪声校正一样,随着背景电平接近测量的源电平,降低了背景噪声校正源电平。与标准校正不同,统计背景校正随着背景的稳定性而增加,并且当背景波动可能是源和背景噪声水平之间的测量差异时,从使用中排除。统计背景噪声校正具有与标准校正相比的若干优点:(1)(1)以已知的置信度(2)在测量波动背景中的源时保证物理源描述,(3)减少1到8的背景校正源描述稳固背景中的源DB,以及(4)提供一种替换标准化背景校正盖的手段,可针对高精度等级方法而激励激励。 VC 2016美国声学学会。

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