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本研究应用高强噪声环境模拟系统,研究了四种噪声状态特性的送话实验和三种护耳器声衰减模型的听话实验,探讨了在高强噪声环境中通话的语言可懂度、影响因素及获得足够语言可懂度的条件.送话实验结果表明,语言可懂度不仅与噪声总声压级有关,而且与语言频段噪声声压级有关,噪声总声压级不超过125dB,语言频段噪声声压级不超过110dB时,语言可懂度可达95%以上.听话实验结果表明,听话语言可懂度与噪声声压级及护耳器声衰减的特性有关,当噪声总声压级为125dB,护耳器声衰减不低于模型3的数值时,听话语言可懂度也可达95%以上.
In this study, high-strength noise environment simulation system was used to study four kinds of speech-transmitting experiments with noise state characteristics and three kinds of hearing-protection experiments with ear-hearing acoustic attenuation models. The study also discussed the speech intelligibility, influencing factors and acquisition of high-intensity and noisy environments Sufficient speech intelligibility conditions.Selecting speech experiment results show that the speech intelligibility is not only related to the total sound pressure level of the noise but also related to the sound pressure level of the speech band, the total sound pressure level of the noise does not exceed 125 dB, and the speech band noise The level of speech intelligibility can reach more than 95% when the pressure level does not exceed 110dB.The obedient experimental results show that the obscuration of obedient speech is related to the characteristics of noise sound pressure level and ear protector sound attenuation, when the total sound pressure level of noise is 125dB, Ear protection sound attenuation is not less than the value of model 3, obedient speech intelligibility can reach more than 95%.