Side peak suppression in responses of an across-frequency integration model to stimuli of varying bandwidth as demonstrated analytically and by implementation
Side peak suppression in responses of an across-frequency integration model to stimuli of varying bandwidth as demonstrated analytically and by implementation
复制标题
跨频积分模型响应中的侧峰抑制，以刺激不同的带宽，如分析和实施所示
DOI：
10.1007/s10827-013-0460-x
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发表时间：
2013
影响因子：
1.2
通讯作者：
Wagner H
中科院分区：
文献类型：
--
作者：
Goeckel T;Führ H;Lakemeyer G;Wagner H
乘法类声音定位模型受到相位模糊的高频音调刺激的乘法创建几个等效的响应峰值调谐曲线。通过增加激励的带宽，可以减少相位模糊度，这通常被称为侧峰抑制。在这项研究中，我们提出了一个基于杰弗里斯的声音定位模型，并确定侧峰抑制解析。结果进行了验证与实施相同的模型，并比较仓鸮的生理数据。三种类型的刺激进行了分析：纯音刺激，双音复合物与不同的频率距离，和噪声信号与可变带宽。作为附加参数，我们还确定了主要响应峰的半宽度，以检查方位角调谐曲线的缩放。结果表明，边峰抑制不仅与带宽有关，还与中心频率和边峰到主响应峰的距离有关。特别是，分析模型预测，侧峰抑制是相对带宽的函数，而半宽度与中心频率成反比，比例因子取决于相对带宽。分析方法和实施产生了等效的调谐曲线（偏差<1%）。此外，仓鸮记录的电生理数据与预测的调谐曲线非常吻合。
Multiplication-like sound localization models are subjected to phase ambiguities for high-frequency tonal stimuli as multiplication creates several equivalent response peaks in tuning curves. By increasing the bandwidth of the stimulus, phase ambiguities can be reduced, which is often referred to as side peak suppression. In this study we present a Jeffress-based sound localization model, and determine side peak suppression analytically. The results were verified with an implementation of the same model, and compared to physiological data of barn owls. Three types of stimuli were analyzed: pure-tone stimuli, two-tone complexes with varying frequency distances, and noise signals with variable bandwidths. As an additional parameter we also determined the half-width of the main response peak to examine the scaling of tuning curves in azimuth. Results showed that side peak suppression did not only depend on bandwidth, but also on the center frequency and the distance of the side peak to the main response peak. In particular, the analytical model predicted that side peak suppression is a function of relative bandwidth, whereas half-width is inversely proportional to center frequency, with a proportionality factor depending on relative bandwidth. The analytical approach and the implementation yielded equivalent tuning curves (deviation < 1 %). Moreover, the electrophysiological data recorded in barn owls closely matched the predicted tuning curves.
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DOI：
10.1109/tsa.2005.857787
发表时间：
2006
期刊：
IEEE Transactions on Audio, Speech, and Language Processing
影响因子：
--
作者：
Ben Supper;Tim S. Brookes;F. Rumsey
通讯作者：
F. Rumsey
猫头鹰听觉错觉的神经基础及其消除
影响因子：
25
作者：
K. Saberi;Yoshifumi Takahashi;Haleh Farahbod;M. Konishi
通讯作者：
M. Konishi
影响因子：
3.5
作者：
Martin C;Houitte D;Guillermier M;Petit F;Bonvento G;Gurden H
通讯作者：
Gurden H
操纵耳间互相关模式的“直线度”和“曲率”会影响听众对耳间延迟变化的敏感度。
影响因子：
2.4
作者：
C. Trahiotis;L. R. Bernstein;M. Akeroyd
通讯作者：
M. Akeroyd
猫头鹰如何解决听觉编码歧义。
DOI：
10.1073/pnas.95.18.10932
发表时间：
1998
影响因子：
11.1
作者：
Mazer,JA
通讯作者：
Mazer,JA