2007: Approximating Pi
Point of departure: the converging series π = 4 – 4/3 + 4/5 – 4/7 + 4/9 ···
Each convergence gets a time window of 5040 samples, in which ten square waves at frequency multiples of 83⁄4n Hz and at amplitudes 2dn are set up, ’83⁄4′ deriving from the 5040 sa