Tsaneva L
Probl Khig. 1994;19:65-71.
The work considers the problem of ergonomic evaluation on the abilities of the auditory analyzer for speech information processing, depending on the zones of masking effect of noise and the rate of speech communication. Significant increase the loss of speech communication with increase in the intensity of the masking effect of noise (from 21.33% at L eq. 40 dB to 96% at L eq. 90 and above 90 dB/A). The speech communication is determined on scale in 4 zones, depending on the qualitative-quantitative criteria of the speech communication processing [I, II, III and IV zones]. Of point of view of ensuring the necessary conditions for perception of the speech communication is confirmed the correctness of the norm for masking noise L eq. 65 dB/A/, which guarantees a good speech communication. Equivalent levels of the masking noise about or equal to L eq. dB/A/ guarantee a satisfactory speech communication in the command desks. When the intensities of the masking noise are above the norms they are of specific importance, as they fall into the unaccepted (bad) zone, of the auditory perception of speech communication.
这项工作考虑了根据噪声掩蔽效应区域和言语交流速率，对听觉分析器处理言语信息能力进行人体工程学评估的问题。随着噪声掩蔽效应强度的增加，言语交流损失显著增加（从等效连续A声级40分贝时的21.33%增加到等效连续A声级90分贝及90分贝以上时的96%）。根据言语交流处理的定性 - 定量标准，言语交流在4个区域内进行分级确定[I、II、III和IV区]。从确保言语交流感知必要条件的角度来看，等效连续A声级65分贝的掩蔽噪声标准的正确性得到了证实，该标准保证了良好的言语交流。在控制台中，等效连续A声级约为或等于该值的掩蔽噪声能保证令人满意的言语交流。当掩蔽噪声强度高于标准时，它们具有特殊重要性，因为它们处于言语交流听觉感知的不可接受（差）区域。
