@ -876,7 +876,7 @@ class SpecData1D(WafoData):
acf.norm = spec.norm
if nr > 0:
w = r_[w , zeros(nfft - 2 * n_f + 2) , -w[n_f - 1:0:-1] ]
w = r_[w , zeros(nfft - 2 * n_f + 2) , -w[n_f - 2:0:-1] ]
fieldname = 'R' + lagtype[0] * nr
for i in range(1, nr + 1):
rper = -1j * w * rper