Phase effects in masking: within- versus across-channel processes.
Phase effects in masking: within- versus across-channel processes.
复制标题
掩蔽中的相位效应：通道内过程与跨通道过程。
DOI：
--
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发表时间：
2003
影响因子：
2.4
通讯作者：
U. Jorasz
中科院分区：
文献类型：
--
作者：
J. Alcantara;B. Moore;B. Glasberg;A. Wilkinson;U. Jorasz
使用中心频率为1或6 kHz的200 ms窄带（1-ERB（N））和宽带（5-ERB（N））余弦相位（CP）和随机相位（RP）谐波复掩蔽器研究了带宽和分量相位对掩蔽的影响。使用连续陷波噪声来限制离频收听。掩蔽基频（F0）为25 Hz。在实验1中，阈值测量正弦信号在1和6 kHz，门控与掩蔽。对于两种带宽，CP中的保留比RP掩蔽中的保留低，但对于更宽的带宽，效果明显更大。对于CP掩蔽者，5-ERB（N）带宽的阈值明显低于1-ERB（N）带宽;对于RP掩蔽者，在相反的方向上有一个小的影响。实验2使用1-和6-kHz CP掩蔽。ERB（N）中信号频率附近的掩蔽成分呈现给一侧耳朵，其余成分呈现给对侧。当所有成分都呈现给同一只耳朵时，其阈值远高于1-ERB（N）掩蔽物，这表明宽带单耳呈现的低阈值不依赖于“高水平”跨声道比较。使用基于模拟听觉滤波器、水平相关压缩非线性和滑动时间积分器的模型，可以很好地预测同时掩蔽阈值;没有必要假设跨通道过程或掩蔽下降中的选择性收听的参与。
The effects of bandwidth and component phase on masking were investigated using 200-ms narrowband (1-ERB(N)) and broadband (5-ERB(N)) cosine-phase (CP) and random-phase (RP) harmonic complex maskers, centered at 1 or 6 kHz. A continuous notched-noise was used to restrict off-frequency listening. The masker fundamental frequency (F0) was 25 Hz. In experiment 1, thresholds were measured for sinusoidal signals at 1 and 6 kHz, gated with the maskers. Thresholds were lower in the CP than in the RP masker, for both bandwidths, but the effect was markedly greater for the wider bandwidth. For the CP maskers, thresholds were markedly lower for the 5-ERB(N) than for the 1-ERB(N) bandwidth; for the RP maskers, there was a small effect in the opposite direction. Experiment 2 used 1- and 6-kHz CP maskers. The masker components in the ERB(N) around the signal frequency were presented to one ear, and the remaining components were presented contralaterally. Thresholds were much higher than when all components were presented to the same ear, and were higher than for the 1-ERB(N) masker alone, suggesting that the low thresholds for broadband monaural presentation do not depend on "high level" across-channel comparisons. Simultaneous masked thresholds could be predicted well using a model based on a simulated auditory filter, a level-dependent compressive nonlinearity, and a sliding temporal integrator; it was not necessary to assume the involvement of across-channel processes or of selective listening in the masker dips.
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影响因子：
2.4
作者：
Ruggero, MA;Rich, NC;Robles, L
通讯作者：
Robles, L
影响因子：
2.4
作者：
Recio, A;Rhode, WS
通讯作者：
Rhode, WS
协调掩蔽中的频率选择性和相位效应。
DOI：
10.1121/1.1394740
发表时间：
2001
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Oxenham,AJ;Dau,T
通讯作者：
Dau,T
测量听觉滤波器相位响应。
DOI：
10.1121/1.1414706
发表时间：
2001
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Oxenham,AJ;Dau,T
通讯作者：
Dau,T