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Estimate of auditory filter shape using notched-noise masking for various signal frequencies

机译:使用陷波噪声掩膜估计各种信号频率的听觉滤波器形状

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References(25) Cited-By(2) In this paper, the masked threshold of a sinusoidal signal in the presence of a notched-noise masker was measured experimentally for five normal-hearing subjects. The frequencies of sinusoidal signals used in the measurement were 125, 250, 500, 1,000, 2,000, 4,000, and 6,000 Hz. The conditions and procedure in our measurement were the same as those used by Glasberg and Moore (2000), with additional measurements at 125 and 6,000 Hz. Uniformly excited noise (UEN) was not used in our measurements. The measured data was used to estimate the parameters of a double roex auditory filter as presented in Glasberg and Moore (2000). Basically, this filter is the sum of a tip filter and a tail filter, with its gain controlled by a schematic family of input-output functions. The PolyFit procedure was used to fit the filter to the measured data. An individual auditory filter was fitted at each of the signal frequencies in our measurements. The results showed that auditory filter shape varied with level. The gain of the filters centered at frequencies between 125 Hz and 1,000 Hz, increased as the center frequency increased. Above 1,000 Hz, the gain of the filters remained at a constant value. These results are consistent with the results in Baker et al. (1998) and Glasberg and Moore (2000).
机译:参考文献(25)被引用者(2)在本文中,对五个正常听觉的受试者进行了实验,测量了存在缺口噪声掩蔽器的正弦信号的掩蔽阈值。测量中使用的正弦信号频率为125、250、500、1,000、2,000、4,000和6,000 Hz。我们测量的条件和步骤与Glasberg和Moore(2000)所使用的条件和步骤相同,另外在125和6,000 Hz下进行了测量。在我们的测量中未使用均匀激发噪声(UEN)。如Glasberg和Moore(2000)所述,测量的数据用于估计双Roex听觉过滤器的参数。基本上,该滤波器是尖端滤波器和尾部滤波器的总和,其增益由输入/输出功能的示意图系列控制。使用PolyFit程序使滤波器适合测量数据。在我们的测量中,每个信号频率都装有一个独立的听觉滤波器。结果表明,听觉过滤器的形状随水平而变化。随着中心频率的增加,滤波器的增益以125 Hz至1,000 Hz之间的频率为中心。高于1,000 Hz时,滤波器的增益保持恒定值。这些结果与贝克等人的结果一致。 (1998)和Glasberg and Moore(2000)。

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