Effects of frequency on free-field masking
Effects of frequency on free-field masking
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DOI：
10.1518/001872095778995580
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发表时间：
1995-12-01
期刊：
影响因子：
3.3
通讯作者：
Good, MD
中科院分区：
文献类型：
--
作者：
Gilkey, RH;Good, MD
随着三维听觉显示变得越来越普遍，人们越来越需要了解空间分离的声音之间可以预期的相互作用。使用两种替代、强制选择、自适应阶梯程序来测量被连续高斯噪声掩蔽的 165 毫秒点击序列信号的可检测性，作为自由场中信号和掩蔽器之间的空间分离的函数。检查水平面内的水平间隔和正中面内的垂直间隔的低频、中频和高频刺激。当信号和掩蔽器水平分离时，掩蔽减少多达 18 dB。还观察到垂直间隔的掩蔽显着减少（6-9 dB）。对于高频刺激，观察到最大的掩蔽减少。将数据与基于耳机的双耳掩蔽研究的结果进行比较。考虑了对听觉显示设计的影响。
As three-dimensional auditory displays become more prevalent, there will be an increasing need to understand the interactions that can be expected among spatially separated sounds. A two-alternative, forced-choice, adaptive staircase procedure was used to measure the detectability of a 165-ms click-train signal masked by a continuous Gaussian noise, as a function of the spatial separation between the signal and the masker in the free field. Horizontal separations within the horizontal plane and vertical separations within the median plane were examined for low-, mid-, and high-frequency stimuli. Masking was reduced by as much as 18 dB when the signal and masker were separated horizontally. Sizable reductions in masking (6-9 dB) were also observed for vertical separations. The largest reductions in masking were observed for the high-frequency stimuli. The data are compared with the results of headphone-based studies of binaural masking. Implications for the design of auditory displays are considered.