plot z again, the cardioid figure is now done separately

sphear_a2b_fir_all.m

@@ -33,7 +33,7 @@
 
 function [B] = sphear_a2b_fir_all(fmin, fmax, Noct, Nfft, Fs, plt)
 
-  plotz = 0;
+  plotz = 1;
   
   %% calculate number of frequency bands spaced Noct
   n = floor(log(fmax/fmin)/log(2^(1/Noct)));