tomwalters@0: function b2 = PZFC_b2(B2, B21, Pp, n2);
tomwalters@0: % compute the power-dependent pole position coeff b2 for the PZFC filter
tomwalters@0: % (same as OZGF_b2 until/unless we change it)
tomwalters@0: 
tomwalters@0: % try for 1.0 input-output slope approx when B21 is about like B2:
tomwalters@0: b2 = B2 * 10^((B21/(B2*n2)) * (Pp - 60)/20);  % arbitrary 60 dB ref point
tomwalters@0: 
tomwalters@0: % limit to a ridiculously small value:
tomwalters@0: if b2 <= 0.2
tomwalters@0:   b2 = 0.2;
tomwalters@0: end