Department of Experimental Audiology, Otto von Guericke University Magdeburg, Leipziger Straße 44, 39120 Magdeburg,
J Acoust Soc Am. 2019 Aug;146(2):EL106. doi: 10.1121/1.5119517.
The present study investigated the combined effect of binaural cues and comodulation for a narrowband target noise masked by a narrowband noise. The threshold difference between a diotic condition (same stimuli in both ears) and a dichotic condition (target interaural phase difference of π and diotic masker) decreased with spectral distance between masker and target, irrespective of across-frequency envelope correlation. The threshold difference between a condition with comodulated target and masker and a corresponding uncorrelated condition, i.e., the comodulation detection difference, did not depend on target frequency and interaural correlation, indicating that these two stimulus properties are processed independently.
本研究调查了双耳线索和调制对被窄带噪声掩蔽的窄带目标噪声的联合影响。在同频条件（双耳刺激相同）和分听条件（目标耳间相位差为π，同频掩蔽噪声）之间，阈值差随着掩蔽噪声和目标之间的频谱距离的增加而减小，与跨频包络相关性无关。在调制目标和掩蔽噪声的条件与相应的不相关条件之间的阈值差，即调制检测差，不依赖于目标频率和耳间相关性，表明这两个刺激特性是独立处理的。
