Melnick W
Ann Otol Rhinol Laryngol. 1977 Nov-Dec;86(6 Pt 1):821-6. doi: 10.1177/000348947708600618.
Nine men were exposed to 24 hours of continuous noise in a sound field. The noise was an octave band centered at 4 kHz at levels 80 and 85 dB. Hearing thresholds were measured monaurally at 11 test frequencies ranging from 250 to 10000 Hz before, during, and after exposure. Temporary threshold shift (TTS) reached maximum levels at 8 to 12 hours of exposure. Maximum TTS occurred at 4 and 6 kHz. Mean asymptomtic threshold shifts (ATS) resulting from the 80 dB exposure level were 9.3 dB for 4 kHz and 7.2 dB for 6 kHz. For the 85 dB noise level, these threshold shifts were 17.8 dB and 14.6 dB respectively. The increase in ATS with increase of noise level for these two frequencies could be fitted with a straight line having a slope of 1.6.
九名男性在声场中暴露于24小时连续噪声。噪声为以4 kHz为中心的倍频程带，声级分别为80 dB和85 dB。在暴露前、暴露期间和暴露后，在250至10000 Hz的11个测试频率上进行单耳听力阈值测量。暂时阈移（TTS）在暴露8至12小时时达到最高水平。最大TTS出现在4 kHz和6 kHz处。80 dB暴露水平导致的平均无症状阈移（ATS）在4 kHz时为9.3 dB，在6 kHz时为7.2 dB。对于85 dB的噪声水平，这些阈移分别为17.8 dB和14.6 dB。这两个频率的ATS随噪声水平增加的情况可用斜率为1.6的直线拟合。
