diff options
Diffstat (limited to 'gnuradio-examples/python/mp-sched/wfm_rcv_pll_to_wav.py')
| -rwxr-xr-x | gnuradio-examples/python/mp-sched/wfm_rcv_pll_to_wav.py | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/gnuradio-examples/python/mp-sched/wfm_rcv_pll_to_wav.py b/gnuradio-examples/python/mp-sched/wfm_rcv_pll_to_wav.py deleted file mode 100755 index 3971d8b73..000000000 --- a/gnuradio-examples/python/mp-sched/wfm_rcv_pll_to_wav.py +++ /dev/null @@ -1,127 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2005,2006,2007 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 3, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gru, eng_notation, optfir -from gnuradio import audio -from gnuradio import blks2 -from gnuradio.eng_option import eng_option -from optparse import OptionParser -import sys -import math - -class wfm_rx_block (gr.top_block): - def __init__(self): - gr.top_block.__init__(self) - - usage = "usage: %prog [options] input-samples-320kS.dat output.wav" - parser=OptionParser(option_class=eng_option, usage=usage) - parser.add_option("-V", "--volume", type="eng_float", default=None, - help="set volume (default is midpoint)") - - (options, args) = parser.parse_args() - if len(args) != 2: - parser.print_help() - sys.exit(1) - - input_filename = args[0] - output_filename = args[1] - - self.vol = 0 - - # build graph - - self.src = gr.file_source(gr.sizeof_gr_complex, input_filename, False) - - adc_rate = 64e6 # 64 MS/s - usrp_decim = 200 - usrp_rate = adc_rate / usrp_decim # 320 kS/s - chanfilt_decim = 1 - demod_rate = usrp_rate / chanfilt_decim - audio_decimation = 10 - audio_rate = demod_rate / audio_decimation # 32 kHz - - - chan_filt_coeffs = optfir.low_pass (1, # gain - usrp_rate, # sampling rate - 80e3, # passband cutoff - 115e3, # stopband cutoff - 0.1, # passband ripple - 60) # stopband attenuation - #print len(chan_filt_coeffs) - chan_filt = gr.fir_filter_ccf (chanfilt_decim, chan_filt_coeffs) - - - #self.guts = blks2.wfm_rcv (demod_rate, audio_decimation) - self.guts = blks2.wfm_rcv_pll (demod_rate, audio_decimation) - - # FIXME rework {add,multiply}_const_* to handle multiple streams - self.volume_control_l = gr.multiply_const_ff(self.vol) - self.volume_control_r = gr.multiply_const_ff(self.vol) - - # wave file as final sink - if 1: - sink = gr.wavfile_sink(output_filename, 2, int(audio_rate), 16) - else: - sink = audio.sink (int (audio_rate), - options.audio_output, - False) # ok_to_block - - # now wire it all together - self.connect (self.src, chan_filt, self.guts) - self.connect ((self.guts, 0), self.volume_control_l, (sink, 0)) - self.connect ((self.guts, 1), self.volume_control_r, (sink, 1)) - try: - self.guts.stereo_carrier_pll_recovery.squelch_enable(True) - except: - pass - #print "FYI: This implementation of the stereo_carrier_pll_recovery has no squelch implementation yet" - - if options.volume is None: - g = self.volume_range() - options.volume = float(g[0]+g[1])/2 - - # set initial values - - self.set_vol(options.volume) - try: - self.guts.stereo_carrier_pll_recovery.set_lock_threshold(options.squelch) - except: - pass - #print "FYI: This implementation of the stereo_carrier_pll_recovery has no squelch implementation yet" - - - def set_vol (self, vol): - g = self.volume_range() - self.vol = max(g[0], min(g[1], vol)) - self.volume_control_l.set_k(10**(self.vol/10)) - self.volume_control_r.set_k(10**(self.vol/10)) - - def volume_range(self): - return (-20.0, 0.0, 0.5) - - -if __name__ == '__main__': - tb = wfm_rx_block() - try: - tb.run() - except KeyboardInterrupt: - pass |