Temporal relations in profile comparisons
Temporal relations in profile comparisons
复制标题
配置文件比较中的时间关系
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
H. Dai
中科院分区：
文献类型：
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作者：
D. Green;H. Dai
在这些实验中，标准仅由21个等幅分量组成，间隔在200至5000赫兹之间的相等对数频率间隔，呈现时间为500毫秒。听者的任务是辨别1000赫兹(信号)分量是否与其他20个分量的电平相同或略高。信号分量的绝对电平不是可靠的提示，因为音调的总电平是在每次呈现时随机选择的。结果表明，听者对信号和标准的时间起始点的相对差异非常敏感。当起始点相同时，增量的阈值最小，但如果信号分量在标准开始前50ms开始，则增量的阈值增加15-20分贝。结果表明，光强能级的内部表示不是一个静态的量，而是一个具有相当大的动力学过程。除非相关频道的开始时间几乎相同，否则频道是不连贯的，并且任何跨频道的合作都是不一致的。
In these experiments, the standard alone consists of 21 equal‐amplitude components spaced at equal log‐frequency intervals between 200 to 5000 Hz, presented for 500 ms. The listener's task is to discriminate whether the 1000‐Hz (signal) component is at the same level as the 20 other components or slightly higher in level. Absolute level of the signal component is not a reliable cue because the overall level of the tones is chosen randomly on each presentation. The results show that the listener is very sensitive to the relative difference in the temporal onset of signal and standard. The threshold for an increment is smallest when the onsets are the same, but increases 15–20 dB if the signal component begins 50 ms before the onset of the standard. The results imply that the internal representation of intensity level is not a static quantity but a process having considerable dynamics. Unless the starting times in relevant channels are nearly the same, the channels are not coherent, and any cross‐channel co...