[Commit-gnuradio] r11335 - gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb

[n4hy]

Author: n4hy
Date: 2009-07-03 16:06:43 -0600 (Fri, 03 Jul 2009)
New Revision: 11335

Modified:
   
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/channelize.py
   
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/decimate.py
   
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/interpolate.py
Log:
low_pass used incorrectly, interpolator still needs work. Now MUCH smaller 
filters and better rejection

Modified: 
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/channelize.py
===================================================================
--- 
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/channelize.py
        2009-07-03 17:29:19 UTC (rev 11334)
+++ 
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/channelize.py
        2009-07-03 22:06:43 UTC (rev 11335)
@@ -18,7 +18,8 @@
         self._fs = 9000
         self._Tmax = self._N * (1.0/self._fs)
         self._M = 9
-        self._taps = gr.firdes.low_pass(1, self._fs, 800, 20)
+        self._taps = gr.firdes.low_pass_2(1, self._fs, 475,50, 100,5)
+
         fc = 200
 
         tpc = math.ceil(float(len(self._taps)) /  float(self._M))
@@ -29,7 +30,7 @@
         
         self.signals = list()
         self.add = gr.add_cc()
-        freqs = [-4070, -3050, -2030, -1010, 10, 1020, 2040, 3060, 4080]
+        freqs = [-4070, -3050, -2030, -1010, 10, 1020, 2040, 3060, 4300]
         for i in xrange(len(freqs)):
             self.signals.append(gr.sig_source_c(self._fs, gr.GR_SIN_WAVE, 
freqs[i], 1))
             self.connect(self.signals[i], (self.add,i))

Modified: 
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/decimate.py
===================================================================
--- 
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/decimate.py
  2009-07-03 17:29:19 UTC (rev 11334)
+++ 
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/decimate.py
  2009-07-03 22:06:43 UTC (rev 11335)
@@ -18,7 +18,7 @@
         self._fs = 10000
         self._Tmax = self._N * (1.0/self._fs)
         self._decim = 20
-        self._taps = gr.firdes.low_pass(1, self._fs, 100, 10)
+        self._taps = gr.firdes.low_pass_2(1, self._fs, 200, 50,120,5)
 
         tpc = math.ceil(float(len(self._taps)) /  float(self._decim))
 

Modified: 
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/interpolate.py
===================================================================
--- 
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/interpolate.py
       2009-07-03 17:29:19 UTC (rev 11334)
+++ 
gnuradio/branches/developers/trondeau/pfb/gnuradio-examples/python/pfb/interpolate.py
       2009-07-03 22:06:43 UTC (rev 11335)
@@ -23,9 +23,9 @@
         self._interp = 8
         self._ainterp = 8
 
-        self._taps = gr.firdes.low_pass(self._interp, self._interp*self._fs, 
freq2+50, 50)
-        self._taps2 = gr.firdes.low_pass(32.0, 1,
-                                         0.4 / (32.0), 0.1/(32.0))
+        self._taps = gr.firdes.low_pass_2(self._interp, self._interp*self._fs, 
freq2+50, 150,120,5)
+        self._taps2 = gr.firdes.low_pass_2(32.0, 1,
+                                         0.4 / (32.0), 0.1/(32.0),100,5)
 
         tpc = math.ceil(float(len(self._taps)) /  float(self._interp))