[Commit-gnuradio] r7519 - in gnuradio/trunk: gnuradio-core/src/python/gnuradio/blks2impl gnuradio-examples/python/usrp

[matt]

Author: matt
Date: 2008-01-25 18:30:37 -0700 (Fri, 25 Jan 2008)
New Revision: 7519

Modified:
   gnuradio/trunk/gnuradio-core/src/python/gnuradio/blks2impl/nbfm_rx.py
   gnuradio/trunk/gnuradio-examples/python/usrp/usrp_nbfm_rcv.py
Log:
better filter bandwidths


Modified: gnuradio/trunk/gnuradio-core/src/python/gnuradio/blks2impl/nbfm_rx.py
===================================================================
--- gnuradio/trunk/gnuradio-core/src/python/gnuradio/blks2impl/nbfm_rx.py       
2008-01-25 15:49:39 UTC (rev 7518)
+++ gnuradio/trunk/gnuradio-core/src/python/gnuradio/blks2impl/nbfm_rx.py       
2008-01-26 01:30:37 UTC (rev 7519)
@@ -75,8 +75,8 @@
         audio_decim = quad_rate // audio_rate
         audio_taps = gr.firdes.low_pass (1.0,            # gain
                                          quad_rate,      # sampling rate
-                                         4.5e3,          # Audio LPF cutoff
-                                         2.5e3,          # Transition band
+                                         2.7e3,          # Audio LPF cutoff
+                                         0.5e3,          # Transition band
                                          gr.firdes.WIN_HAMMING)  # filter type
 
         print "len(audio_taps) =", len(audio_taps)

Modified: gnuradio/trunk/gnuradio-examples/python/usrp/usrp_nbfm_rcv.py
===================================================================
--- gnuradio/trunk/gnuradio-examples/python/usrp/usrp_nbfm_rcv.py       
2008-01-25 15:49:39 UTC (rev 7518)
+++ gnuradio/trunk/gnuradio-examples/python/usrp/usrp_nbfm_rcv.py       
2008-01-26 01:30:37 UTC (rev 7519)
@@ -273,8 +273,8 @@
         # Create filter to get actual channel we want
         chan_coeffs = gr.firdes.low_pass (1.0,                # gain
                                           self.if_rate,       # sampling rate
-                                          13e3,               # low pass 
cutoff freq
-                                          4e3,                # width of 
trans. band
+                                          8e3,               # low pass cutoff 
freq
+                                          2e3,                # width of 
trans. band
                                           gr.firdes.WIN_HANN) # filter type 
 
         print "len(rx_chan_coeffs) =", len(chan_coeffs)