[Commit-gnuradio] r8679 - gnuradio/branches/developers/cswiger/wip/gr-atsc/src/lib

[cswiger]

Author: cswiger
Date: 2008-06-23 14:24:18 -0600 (Mon, 23 Jun 2008)
New Revision: 8679

Modified:
   gnuradio/branches/developers/cswiger/wip/gr-atsc/src/lib/atsci_sssr.cc
Log:
Changed check on rx clock / symbol rate ratio for 16Mhz - added note
about fixing interpolator_taps.h (where nobody will ever notice ;)


Modified: gnuradio/branches/developers/cswiger/wip/gr-atsc/src/lib/atsci_sssr.cc
===================================================================
--- gnuradio/branches/developers/cswiger/wip/gr-atsc/src/lib/atsci_sssr.cc      
2008-06-23 20:15:32 UTC (rev 8678)
+++ gnuradio/branches/developers/cswiger/wip/gr-atsc/src/lib/atsci_sssr.cc      
2008-06-23 20:24:18 UTC (rev 8679)
@@ -192,8 +192,10 @@
 atsci_interpolator::atsci_interpolator (double 
nominal_ratio_of_rx_clock_to_symbol_freq)
   : d_debug_fp(0)
 {
-// Tweaked ratio from 1.8 to 1.78 to support input rate of 19.2MHz
-  assert (nominal_ratio_of_rx_clock_to_symbol_freq >= 1.78);
+// Tweaked ratio from 1.8 to 1.48 to support input rate of 18MHz
+// Be sure to update gnuradio-core/src/lib/filter/interpolator_taps.h 
+// to NTAPS = 12 NSTEPS = 128  and   BANDWIDTH = 0.375
+  assert (nominal_ratio_of_rx_clock_to_symbol_freq >= 1.48);
   d_nominal_ratio_of_rx_clock_to_symbol_freq =
     nominal_ratio_of_rx_clock_to_symbol_freq;