Methods By using narrow band spectrum analyses and computer we studied the parameters in 30 patients and 30 normal controls. Results The fundamental frequency and bass were lower in diseased group.
方法应用频谱仪和电子计算机对30例声带无明显病变的室带肥厚者和30例室带声带无明显病变的志愿者，测定基频、低音、音域和频率微扰百分值。
An analysis was made of ABR frequency spectrum spectrum of 15 normal guinea pigs and 18 guinea pigs with the destruction of different plane of auditory pathway.
对15只正常豚鼠的ABR时域波形和频谱特征以及对18只豚鼠通过脑干核团立体定位技术，毁损听觉通路各不同部位后的时域波形及频谱改变进行了分析。
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