Detection of changes in modulation depth of a target sound in the presence of other modulated sounds
Detection of changes in modulation depth of a target sound in the presence of other modulated sounds
复制标题
在存在其他调制声音的情况下检测目标声音的调制深度变化
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
U. Jorasz
中科院分区：
文献类型：
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作者：
B. Moore;U. Jorasz
这些实验关注的是当调制载波被添加到远离目标频率的频率处的目标调制声音时可能发生的共调制掩蔽释放（CMR）和调制鉴别干扰（MDI）。测量持续时间以检测10 Hz频率下1000 Hz载波（目标）正弦幅度调制（SAM）的调制指数（m）的增量或减量，该载波单独存在或与各种添加的声音一起存在。在实验1-3中，目标具有0.5的m的标准值。添加的声音具有550和1550 Hz或230和3300 Hz的载波频率，并且它们要么是未调制的（m=0），要么是10 Hz速率的SAM（与目标同相），其中m=0.25，0.5或0.75。在实验1中，目标和添加的声音同步门控持续时间为1000毫秒。添加的声音产生MDI，MDI的量随着添加的声音的调制指数的增加而逐渐增加。在E...
These experiments are concerned with the comodulation masking release (CMR) and modulation discrimination interference (MDI) that can occur when modulated carriers are added to a target modulated sound at frequencies remote from the target frequency. Thresholds were measured for detecting increments or decrements in the modulation index (m) of a 1000‐Hz carrier (the target) sinusoidally amplitude modulated (SAM) at a 10‐Hz rate, with that carrier presented either alone, or with a variety of added sounds. In experiments 1–3, the target had a standard value of m of 0.5. The added sounds had carrier frequencies of either 550 and 1550 Hz or 230 and 3300 Hz, and they were either unmodulated (m=0) or SAM at a 10‐Hz rate (in phase with the target), with m=0.25, 0.5, or 0.75. In experiment 1, the target and added sounds were gated on synchronously for a duration of 1000 ms. The added sounds produced MDI, and the amount of MDI increased progressively with increases in the modulation index of the added sounds. In e...