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Annoyance penalty of impulsive noise - The effect of impulse onset

机译：令人震惊的噪音令人烦恼 - 脉冲发作的影响

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Impulsive sound can be perceived more annoying than a steady-state sound having the same A-weighted equivalent sound pressure level, LAeq. The difference in perceived noise annoyance can be compensated by adding a penalty or an adjustment k to LAeq (rating level). Many legislations apply a constant penalty value, such as 5 dB or more, but the validity of this procedure has been questioned. Nordtest method NT ACOU 112 identifies an impulse from the time profile of sound pressure level by using two measures describing the onset of an impulse: level difference (DL) and onset rate (Ron). The purpose of this study was to determine how the annoyance penalty depends on DL (5-40 dB) and Ron (5-800 dB/s) and to compare obtained results to the penalty prediction model of Nordtest method. A psychoacoustic laboratory experiment of 32 participants was conducted. Synthetic and periodic impulsive sounds were studied with two alternative spectra. The sounds were presented at 55 dB LAeq. Steady-state sounds at levels 49-70 dB were used to derive the penalty of impulsive sounds. The observed penalty values ranged between 0 and thorn 8 dB. The penalty values depended somewhat on spectrum. The penalty deviated from zero when DL 10 dB or Ron 15 dB/s and increased with increasing DL and Ron. The penalty predicted by Nordtest method usually overestimated the observed penalty when Ron. 200 dB/s. The results are against constant penalty values and they can be used to develop future penalty schemes.
机译：冲动的声音可以感觉到比具有相同加权等效声压水平的稳态声音更令人讨厌。通过增加罚款或调整k到Laeq（评级水平），可以补偿感知噪声烦恼的差异。许多立法适用于5 dB或更高的持续罚款值，但该程序的有效性已被质疑。 NORDTEST方法NT ACOU 112通过使用描述脉冲的开始：电平差（DL）和开始速率（RON）的两个措施来识别声压水平的时间轮廓的脉冲。本研究的目的是确定烦恼惩罚如何取决于DL（5-40dB）和RON（5-800 dB / s），并将获得的结果与NORDTEST方法的惩罚预测模型进行比较。进行了32名参与者的心理声学实验室实验。用两个替代光谱研究了合成和周期性冲动声音。声音呈现在55 dB的Laeq。 49-70 dB级别的稳态声音用于导出冲动声音的惩罚。观察到的罚款值在0到8 dB之间。罚款值依赖于频谱。当DL> 10 dB或RON> 15 dB / s的罚款偏离零并随着DL和RON的增加而增加。 Nordtest方法预测的罚款通常在罗恩时长期高估观察到的罚球。 200 db / s。结果违反了持续罚款价值，它们可用于制定未来的罚款计划。

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