不同噪声的时长差别阈限及影响因素

Just noticeable difference of duration perception and influence factors of different noise

利用心理声学实验测量了白噪、粉噪和babble噪声的时长差别阈限,通过主观评价找出影响判断噪声时长差别阈限的心理评价指标。结果表明白噪和粉噪的相对差别阈限在10.0%左右、babble噪声的相对差别阈限约为13.6%,同时噪声的干扰度和烦恼度会影响不同噪声时长差别阈限的判断。

This thesis explores just notice difference of duration perception of white noise,pink noise and babble noise though psychoacoustic experiments and find out what psychological evaluation index influence the judging results.The results show that the relative just notice difference of duration perception of white noise and pink noise is about 10.0%,while the babble noise is about 13.6%.Meanwhile,the degree of disturbance and annoyance can affect the judgement on the just notice difference of duration perception of different noise.