Spectral dominance in sensitivity to interaural delay for broadband stimuli
Spectral dominance in sensitivity to interaural delay for broadband stimuli
复制标题
宽带刺激对耳间延迟敏感度的频谱优势
DOI：
10.1121/1.2022675
复制
发表时间：
1985
影响因子：
2.4
通讯作者：
P. Zurek
中科院分区：
文献类型：
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作者：
P. Zurek
在存在diotic光谱条纹的情况下，测量目标频带的耳间延迟的最小可察觉差异（jnds）。刺激是0.1至9 kHz平坦频谱的咔哒声或100 ms噪声脉冲串。目标频带的带宽是中心频率的0.4倍。无论是点击或噪音，目标波段的jnds具有0.5和1 kHz之间的中心频率大致不受条纹的存在：他们是几十微秒的数量级。相比之下，在高频率下的目标频带的jnds由于条纹的存在而大大降低：它们从大约100 μs增加到大于600 μs。对于噪声，延迟低频目标频带会导致该频带的图像与条纹的图像分离。通过点击，延迟低频带（约占总能量的3%）会导致整个宽带图像偏侧化。结果表明，Bilsen和Raatgever所描述的优势区的程度与其在土壤中的分布规律基本一致。
Just‐noticeable differences (jnds) in interaural delay of a target band were measured in the presence of a diotic spectral fringe. Stimuli were clicks or 100‐ms bursts of noise with flat spectra from 0.1 to 9 kHz. The bandwidth of the target band was 0.4 times the center frequency. With either clicks or noise, the jnds for target bands having center frequencies between 0.5 and 1 kHz were roughly unaffected by the presence of the fringe: They were on the order of tens of microseconds. In contrast, the jnds for target bands at high frequencies were greatly degraded by the presence of the fringe: They increased from approximately 100 μs to greater than 600 μs. With noise, delaying a low‐frequency target band causes the image of that band to separate from the image of the fringe. With clicks, delaying a low‐frequency band (with about 3% of the total energy) causes the entire wideband image to lateralize. In general, the results suggest that the degree of the dominance region described by Bilsen and Raatgever ...