Loudness reduction and adaptation induced by a contralateral tone.
Loudness reduction and adaptation induced by a contralateral tone.
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由对侧音调引起的响度降低和适应。
DOI：
10.1121/1.394085
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
B. Scharf
中科院分区：
文献类型：
--
作者：
M. Botte;C. Baruch;B. Scharf
一只耳朵的间歇性音调可能会导致对侧耳朵的连续音调响度大幅下降 [Botte et al., J. Acoust.苏克。是。 72, 727-739 (1982)]。为了揭示这种诱导响度适应的基础，使用连续幅度估计的方法来测量在对侧耳朵中单次呈现短暂诱导音期间和之后一只耳朵中测试音的响度。诱导剂的持续时间和频率是不同的。测试音的频率设置为 500、1000 或 3000 Hz。感应器和测试音均为 60 dB SPL。当诱导器持续5秒以上且与测试音频率相同时，诱导器开启时测试音响度降低80%~100%。随着感应器频率远离测试音调，响度降低逐渐下降，除了在频率间隔超过临界带宽的点处有更明显的下降。诱导器关闭后响度仍然很低。附加测量表明，响度降低量与测量到的感应器声像远离听者头部中心的运动密切相关（分散）。
An intermittent tone in one ear may induce a large decline in the loudness of a continuous tone in the contralateral ear [Botte et al., J. Acoust. Soc. Am. 72, 727-739 (1982)]. To uncover the basis for this induced loudness adaptation, the method of successive magnitude estimations was used to measure the loudness of a test tone in one ear during and after a single presentation of a brief inducer tone in the contralateral ear. Duration and frequency of the inducer were varied. The frequency of the test tone was set at 500, 1000, or 3000 Hz. Both inducer and test tones were at 60 dB SPL. When the inducer lasted 5 s or more and was at the same frequency as the test tone, the loudness of the test tone was reduced by 80% to 100% while the inducer was on. As the inducer frequency moved away from the test tone, the loudness reduction declined gradually except for a more marked drop at the point where the frequency separation exceeded the critical bandwidth. Loudness remained depressed after the inducer went off. Additional measurements showed that the amount of loudness reduction corresponded closely to the measured movement of the inducer's sound image away from the center of the listener's head (decentralization).