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我已經通過使用scipy寫了一個低通巴特沃思濾波器。我有這樣的數據例如-2,-1,0,1,2,但過濾器將其更改爲0,-1,2,1,2。任何想法來解決它?低通巴特沃斯scipy的問題
def lowPassButterworthDigital(self, signal1 =None, signal2 = None):
'''
Digital low-pass Butterworth filter
'''
#design filter
signals = [signal1, signal2]
for i in range(len(signals)):
b,a = signal.butter(2, 0.1, "low", False, "ba")
if i == 0:
signal1 = signal.lfilter(b, a, signal1)
else:
signal2 = signal.lfilter(b, a, signal2)
return signal1, signal2
您看到了什麼問題?也許一些示例輸入,輸出會有所幫助? – Freddie