By moving our heads, we can perceive the relative changes in all of the time level and frequency cues.
通过移动我们的头，我们可以把所有的时间和频率的相对变化的暗示。
By using these signals, the relative energy distributions of blasting vibration in different frequency bands and the regularity of vibration strength varying with time can be obtained.
应用这些信号可以给出不同频率带上爆破振动的相对能量分布和振动强度的时间变化规律。
The relative waveforms, such as maximum frequency, mean frequency and bandwidth, were obtained using the short time Fourier analysis of those simulated signals.
对这些仿真信号进行短时傅里叶分析，求出相应的最大频率、平均频率和频谱宽度等曲线。
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