업데이트 'README.md'

README.md

@@ -125,7 +125,7 @@ def bandpass_filt(x, band=(8,18), fs=500, order=10):
   return sosfiltfilt(butter(order,[band[0]/(0.5*fs),band[1]/(0.5*fs)],btype='band',output='sos'),x).reshape(-1)
 def get_upper_envelope(y, x, lower_limit = -10000000):
   peaks,_ = find_peaks(y, height=lower_limit)
-  peaks_x = np.concatenate((np.array([t[0]]),x[peaks],np.array([t[-1]])), axis=0)
+  peaks_x = np.concatenate((np.array([x[0]]),x[peaks],np.array([x[-1]])), axis=0)
   peaks_y = np.concatenate((np.array([y[0]]),y[peaks],np.array([y[-1]])), axis=0)
   return interp1d(peaks_x, peaks_y, kind = 'cubic')(np.linspace(peaks_x[0], peaks_x[-1], len(y)))