Two-tone unmasking and suppression in a forward-masking situation.
Two-tone unmasking and suppression in a forward-masking situation.
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DOI：
10.1121/1.381007
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发表时间：
1976-06
期刊：
影响因子：
--
通讯作者：
R. Shannon
中科院分区：
文献类型：
--
作者：
R. Shannon
研究了前向掩蔽情况，其中添加到掩蔽物的更多能量降低了信号的阈值。信号是一个单一的正弦曲线。掩蔽信号包含两个频率分量：一个与信号频率相同，另一个频率可变。对于这种可变掩蔽成分的某些频率和强度，信号的阈值低于不存在该成分时的阈值，这种阈值的降低就是去掩蔽。解掩蔽被解释为是由可变掩蔽分量对固定掩蔽分量的抑制引起的，因此在信号频率处产生较少的掩蔽。掩蔽和非掩蔽的基本模式在性质上类似于Houtgast观察到的脉动阈值模式[Acustica 29，168 - 179（1973）。在绝对阈值或同时掩蔽情况下未观察到揭盲。在测试的所有信号频率（0.5-6.0 kHz）下均观察到非掩蔽，并且不依赖于掩蔽成分的相位。
A forward‐masking situation was investigated where more energy added to the masker decreased the threshold of the signal. The signal was a single sinusoid. The masker contained two frequency components: one at the same frequency as the signal, and one at a variable frequency. For certain frequencies and intensities of this variable masker component the threshold of the signal was lower than if that component were not present.This decrease in threshold is unmasking. Unmasking is interpreted as being caused by the suppression of the fixed masker component by the variable masker component, thus producing less masking at the signal frequency. The basic pattern of masking and ummasking was qualitatively similar to the pattern of pulsation thresholds observed by Houtgast [Acustica 29, 168‐179 (1973). Unmasking was not observed at absolute threshold or in a simultaneous masking situation. Unmasking was observed at all signal frequencies tested (0.5–6.0 kHz) and was not dependent on the phase of the masker compon...