尤其是本文把正则阶作为约束条件之一，从而保证了滤波器通带的平坦性和阻带的快速衰减，并且在阻带滤波器的频谱值非常接近于零。
Especially, regularity as one of the constraints assure the flatness in passband and the high attenuation in stopband, even the value of stopband response is very close to zero.
基于数字图像处理技术和分形理论，应用多重分形频谱理论对木材内部缺陷进行识别，并设定了适用于木材图像检测的分形频谱值范围；
Based on digital image processing and fractal, multifractal spectrum was applied to wood inner defects recognition, the range of multifractal spectrum was set for wood image detection.
build _ match_number的第一部分将查看录制的声波纹频谱中的当前值是否超出可接受的偏差。
The first part of build_match_number looks to see if the current value in the recorded voice-print spectrum is outside the accepted deviation.
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