Department of Experimental Audiology, Otto von Guericke University Magdeburg, Leipziger Straße 44, 39120 Magdeburg, Germany.
Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig,
J Acoust Soc Am. 2020 Mar;147(3):EL259. doi: 10.1121/10.0000897.
The present study investigated the effect of the number of spectral components on the threshold in quiet of infrasound stimuli. Stimuli with one, two, or three sinusoidal components were presented monaurally to the ear with a low-distortion infrasound reproduction system. All components of the complex tones had the same level relative to their respective pure-tone threshold. The data are consistent with the assumption of a (perceptually weighted) intensity integration at threshold: The level at threshold for each component is 3 dB lower when two components were presented simultaneously. Thresholds decrease further, when a three-tone complex is used.
本研究调查了声频刺激的阈限与光谱分量数量的关系。使用低失真次声再现系统，通过单耳向耳朵呈现具有一个、两个或三个正弦分量的刺激。相对于各自的纯音阈限，复合音的所有分量的水平都相同。数据与阈限处（感知加权）强度综合的假设一致：当同时呈现两个分量时，每个分量的阈限水平降低 3dB。当使用三音复合音时，阈值进一步降低。
