white noise test signal 中文意思是什麼
white noise test signal
解釋
白噪聲測試信號-
In vibration test, the signal is always along with noise. if the noise belongs to white noise, fourier transform is very suit to identify and process it, after then remove it. but when there exists low energy impact signal, traditional band pass filter remove noise and the precise position of impact signal is blured
對于白噪聲,由於它是穩定信號,所以也可以使用fourier變換定位,以便在合適的頻段進行提取。但是對于低能量突變瞬態信號,在信噪比比較低的情況下,由於帶通濾波的平滑作用,瞬態信號的位置信息也變得很模糊了。
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