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用数字滤波方法对20名正常听力者的听性脑干反应(ABR)进行分析,得出正常ABR各波的频谱范围。Ⅰ～Ⅵ波的频谱主要在450～1450Hz范围内。用这样一个带通的零相移数字滤波器对ABR进行滤波处理,能改善信噪比,提高ABR的峰-峰值。
The auditory brainstem response (ABR) of 20 normal audiologists was analyzed by digital filtering method, and the spectral range of each normal ABR wave was obtained. The spectrum of Ⅰ ~ Ⅵ wave is mainly in the range of 450 ~ 1450Hz. Filtering the ABR with such a band-pass zero-phase shift digital filter improves the signal-to-noise ratio and increases the peak-to-peak ABR.