Python 低通butterworth-scipy的问题
我用scipy编写了一个低通巴特沃斯滤波器。我有这样的数据,例如-2,-1,0,1,2,但过滤器将其更改为0,-1,2,1,2。有什么好办法吗Python 低通butterworth-scipy的问题,python,scipy,signal-processing,Python,Scipy,Signal Processing,我用scipy编写了一个低通巴特沃斯滤波器。我有这样的数据,例如-2,-1,0,1,2,但过滤器将其更改为0,-1,2,1,2。有什么好办法吗 def lowPassButterworthDigital(self, signal1 =None, signal2 = None): ''' Digital low-pass Butterworth filter ''' #design filter signals
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
我成功地解决了这个问题。我把滤纸换成了滤纸
def lowPassButterworthDigital(self, signal1 =None, signal2 = None):
'''
Digital low-pass Butterworth filter
'''
#design filter
signals = [signal1, signal2]
print signal1
print signal2
for i in range(len(signals)):
b,a = signal.butter(2, 0.1, "low", False, "ba")
if i == 0:
signal11 = signal.filtfilt(b, a, signal1)
print signal11
else:
signal2 = signal.filtfilt(b, a, signal2)
print signal2
return signal11, signal2
你觉得它有什么问题?也许一些示例输入、输出会有所帮助?