diff options
| author | Ben Reynwar <ben@reynwar.net> | 2013-03-07 23:27:44 -0700 |
|---|---|---|
| committer | Ben Reynwar <ben@reynwar.net> | 2013-03-07 23:27:44 -0700 |
| commit | ae30f247616b6229fb304e30fecf3f82ae09dbf6 (patch) | |
| tree | 74c1d6cd8300b44b6280c56bc4ad257c40390b3e /gr-analog/python/am_demod.py | |
| parent | e8b4e619479dd23d87c3aef042f2452f867a1e18 (diff) | |
analog: Enabling uninstalled python imports.
Diffstat (limited to 'gr-analog/python/am_demod.py')
| -rw-r--r-- | gr-analog/python/am_demod.py | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/gr-analog/python/am_demod.py b/gr-analog/python/am_demod.py deleted file mode 100644 index 3459e825f4..0000000000 --- a/gr-analog/python/am_demod.py +++ /dev/null @@ -1,73 +0,0 @@ -# -# Copyright 2006,2007,2012 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 -from gnuradio import blocks -from gnuradio import filter - -class am_demod_cf(gr.hier_block2): - """ - Generalized AM demodulation block with audio filtering. - - This block demodulates a band-limited, complex down-converted AM - channel into the the original baseband signal, applying low pass - filtering to the audio output. It produces a float stream in the - range [-1.0, +1.0]. - - Args: - channel_rate: incoming sample rate of the AM baseband (integer) - audio_decim: input to output decimation rate (integer) - audio_pass: audio low pass filter passband frequency (float) - audio_stop: audio low pass filter stop frequency (float) - """ - def __init__(self, channel_rate, audio_decim, audio_pass, audio_stop): - gr.hier_block2.__init__(self, "am_demod_cf", - gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature - gr.io_signature(1, 1, gr.sizeof_float)) # Input signature - - MAG = blocks.complex_to_mag() - DCR = blocks.add_const_ff(-1.0) - - audio_taps = filter.optfir.low_pass(0.5, # Filter gain - channel_rate, # Sample rate - audio_pass, # Audio passband - audio_stop, # Audio stopband - 0.1, # Passband ripple - 60) # Stopband attenuation - LPF = filter.fir_filter_fff(audio_decim, audio_taps) - - self.connect(self, MAG, DCR, LPF, self) - -class demod_10k0a3e_cf(am_demod_cf): - """ - AM demodulation block, 10 KHz channel. - - This block demodulates an AM channel conformant to 10K0A3E emission - standards, such as broadcast band AM transmissions. - - Args: - channel_rate: incoming sample rate of the AM baseband (integer) - audio_decim: input to output decimation rate (integer) - """ - def __init__(self, channel_rate, audio_decim): - am_demod_cf.__init__(self, channel_rate, audio_decim, - 5000, # Audio passband - 5500) # Audio stopband |