Shift the samples by 0.5.
Shift the samples by 0.5.

It seems this has no effect in FFT or audio, but visually it shifts the
points so they make a circle again.

fdb/frequensea,silky/frequensea,fdb/frequensea,fdb/frequensea,silky/frequensea,fdb/frequensea,fdb/frequensea,silky/frequensea,silky/frequensea,silky/frequensea