diff options
Diffstat (limited to 'gr-audio/examples/python/multi_tone.py')
| -rwxr-xr-x | gr-audio/examples/python/multi_tone.py | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/gr-audio/examples/python/multi_tone.py b/gr-audio/examples/python/multi_tone.py index 00c213b634..6232cbef52 100755 --- a/gr-audio/examples/python/multi_tone.py +++ b/gr-audio/examples/python/multi_tone.py @@ -1,6 +1,6 @@ #!/usr/bin/env python # -# Copyright 2004,2006,2007 Free Software Foundation, Inc. +# Copyright 2004,2006,2007,2012 Free Software Foundation, Inc. # # This file is part of GNU Radio # @@ -25,6 +25,12 @@ from gnuradio import audio from gnuradio.eng_option import eng_option from optparse import OptionParser +try: + from gnuradio import analog +except ImportError: + sys.stderr.write("Error: Program requires gr-analog.\n") + sys.exit(1) + #import os #print os.getpid() #raw_input('Attach gdb and press Enter: ') @@ -43,7 +49,7 @@ class my_top_block(gr.top_block): help="set maximum channels to use") parser.add_option("-D", "--dont-block", action="store_false", default=True, dest="ok_to_block") - (options, args) = parser.parse_args () + (options, args) = parser.parse_args() if len(args) != 0: parser.print_help() raise SystemExit, 1 @@ -69,19 +75,19 @@ class my_top_block(gr.top_block): # progression = (7, 11, 1, 5) progression = (7, 11, 1, 5, 9) - dst = audio.sink (sample_rate, - options.audio_output, - options.ok_to_block) + dst = audio.sink(sample_rate, + options.audio_output, + options.ok_to_block) max_chan = dst.input_signature().max_streams() if (max_chan == -1) or (max_chan > limit_channels): max_chan = limit_channels - for i in range (max_chan): - quo, rem = divmod (i, len (progression)) + for i in range(max_chan): + quo, rem = divmod(i, len (progression)) freq = base * ratios[progression[rem]] * (quo + 1) - src = gr.sig_source_f (sample_rate, gr.GR_SIN_WAVE, freq, ampl) - self.connect (src, (dst, i)) + src = analog.sig_source_f(sample_rate, analog.GR_SIN_WAVE, freq, ampl) + self.connect(src, (dst, i)) if __name__ == '__main__': try: |