Remove default BWchan (not needed). Added default coeff_q_max.

applications/apertif/matlab/pfir_coeff_adjust.m

@@ -25,6 +25,9 @@
 %   coefficients dependent on:
 %
 %   config.hp_factor : = 1, is initial or default value for BWchan
+%     With config.hp_factor the BWchan can be set relative to fchan = 1/N.
+%     Default BWchan = config.hp_factor/N = 1/N = fchan. 
+%
 %   config.hp_adjust :
 %     when true then enable automatic channel half power bandwidth
 %     adjustment of config.hp_factor by iteration until the
@@ -59,7 +62,7 @@
 function coeff = pfir_coeff_adjust(N, L, BWchan, r_pass, r_stop, nof_bits, config, coeff_q_max)
 
 % Default options
-if ~exist('BWchan', 'var'); BWchan = config.hp_factor/N; end;  % default set BWchan relative to fchan via config.hp_factor
+if ~exist('coeff_q_max', 'var'); coeff_q_max = 2^(nof_bits-1)-1; end;  % the quantization maps h_fir_max to coeff_q_max
 
 while true
     if config.hp_adjust==false