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感觉噪声级是根据8个倍频程声压级或25个三分之一倍频程声压级计算出来的表示噪声吵闹程度的单一数字,单位是感觉噪声分贝PNdB。 计算的第一步是先把各频带的声压级根据表1或表2(第二篇文献的表3、表4)转化为噪度N(单位为Noy)。总噪度则为
The perceived noise level is a single number based on eight octaves or 25 one-third octave SPLs representing noise noises, in units of perceived noise dB dB. The first step in the calculation is to first convert the sound pressure level for each band to Noise N (in units of Noy) according to Table 1 or Table 2 (Table 3, Table 4 of the second document). The total noise is then