Svensson O, Almqvist B, Jönsson K E
Scand Audiol. 1987;16(1):43-7. doi: 10.3109/01050398709042154.
Analog and digital filtering of ABR (Auditory Brainstem Response) is compared for 20 adults with normal hearing. The result shows that the shape of the ABR is changed by the non-linear phase function of the analog filter (350-1,700 Hz). Peaks IV and V are particularly affected. The result also shows that if peaks IV and V are to be identified with certainty it is sometimes necessary to raise the lower band limit of the filter. This is because the low-frequency part of the ABR interferes with peaks IV and V. The latencies of peaks I to V obtained from ABRs after digital and analog filtering have been compared. This showed small but significant differences.
对20名听力正常的成年人的听觉脑干反应（ABR）进行了模拟滤波和数字滤波比较。结果表明，模拟滤波器（350 - 1700赫兹）的非线性相位函数改变了ABR的形状。波峰IV和波峰V受到的影响尤为明显。结果还表明，如果要确定识别波峰IV和波峰V，有时有必要提高滤波器的下限频率。这是因为ABR的低频部分会干扰波峰IV和波峰V。对数字滤波和模拟滤波后的ABR所获得的波峰I至波峰V的潜伏期进行了比较。结果显示存在微小但显著的差异。
