Added c_exp_sub_a_ampl.

libraries/dsp/verify_pfb/tb_verify_pfb_wg.vhd

@@ -239,9 +239,6 @@ ARCHITECTURE tb OF tb_verify_pfb_wg IS
   CONSTANT c_nof_channels            : NATURAL := 2**c_wpfb.nof_chan;       -- = 2**0 = 1, so no time multiplexing of inputs
   CONSTANT c_nof_sync                : NATURAL := 5;                        -- nof sync intervals to simulate
   
-  -- Expected subband amplitude gain relative to input WG amplitude -1 for divide by 2 in two real input separate (Ampl --> Ampl/2)
-  CONSTANT c_pfb_sub_scaling         : REAL := 2.0**REAL((g_fft_out_dat_w + g_fft_out_gain_w) - (g_fil_in_dat_w + g_fil_backoff_w) - 1);
-
   -- Subband at WG frequency
   CONSTANT c_bin_a                   : NATURAL := NATURAL(FLOOR(g_subband_index_a));
   CONSTANT c_bin_a_frac_en           : BOOLEAN := g_subband_index_a > REAL(c_bin_a);
@@ -277,7 +274,13 @@ ARCHITECTURE tb OF tb_verify_pfb_wg IS
                                                                                      -- subband index / c_N_fft = 64 / 1024 = 1/16
     
   -- SST
-  
+  -- Expected subband amplitude gain relative to input WG amplitude -1 for divide by 2 in two real input separate (Ampl --> Ampl/2)
+  -- . assume fir_filter_dc_gain ~= 1.0, like with c_wpfb_lofar1_fir_filter_dc_gain 0.994817
+  CONSTANT c_pfb_sub_scaling         : REAL := func_wpfb_subband_gain(c_wpfb);
+
+  CONSTANT c_exp_sub_a_ampl          : REAL := c_wg_ampl_a * c_pfb_sub_scaling;
+  CONSTANT c_exp_sub_b_ampl          : REAL := c_wg_ampl_a * c_pfb_sub_scaling;
+
   -- TB
   SIGNAL bs_end                 : STD_LOGIC := '0';
   SIGNAL tb_end                 : STD_LOGIC := '0';
@@ -1017,6 +1020,7 @@ BEGIN
       print_str(". sub_a_re                     = " & int_to_str(sub_a_re));
       print_str(". sub_a_im                     = " & int_to_str(sub_a_im));
       print_str(". sub_a_ampl                   = " & real_to_str(sub_a_ampl, 10, 3));
+      print_str(". sub_a_ampl/c_exp_sub_a_ampl  = " & real_to_str(sub_a_ampl/c_exp_sub_a_ampl, 10, 6));
       print_str(". sub_a_re_frac                = " & int_to_str(sub_a_re_frac));
       print_str(". sub_a_im_frac                = " & int_to_str(sub_a_im_frac));
       print_str(". sub_a_ampl_frac              = " & real_to_str(sub_a_ampl_frac, 10, 3));
@@ -1060,6 +1064,7 @@ BEGIN
       print_str(". sub_b_re                     = " & int_to_str(sub_b_re));
       print_str(". sub_b_im                     = " & int_to_str(sub_b_im));
       print_str(". sub_b_ampl                   = " & real_to_str(sub_b_ampl, 10, 3));
+      print_str(". sub_b_ampl/c_exp_sub_b_ampl  = " & real_to_str(sub_b_ampl/c_exp_sub_b_ampl, 10, 6));
       print_str(". sub_b_re_frac                = " & int_to_str(sub_b_re_frac));
       print_str(". sub_b_im_frac                = " & int_to_str(sub_b_im_frac));
       print_str(". sub_b_ampl_frac              = " & real_to_str(sub_b_ampl_frac, 10, 3));