def common_main(script_name, files, argv):
assert len(
argv
) >= 2, "Usage: python {} folder [filename1] [filename2]...".format(
script_name)
folder = argv[1]
if len(argv) == 3:
filenames = argv[2:]
else:
filenames = None
if not os.path.exists(folder):
os.mkdir(folder)
for name, value in files.items():
if value.stream is not None and (filenames is None
or name in filenames):
print "Writing " + value.filename
with open(os.path.join(folder, value.filename), 'wb') as f:
audiogen.sampler.write_wav(
f, envelope(envelope(sound(), value.stream),
constant(0.01)))
print "Done"
else:
print "Skipping " + value.filename
return 0
def encode(binary_data): ''' Encode binary data using Bell-202 AFSK Expects a bitarray.bitarray() object of binary data as its argument. Returns a generator of sound samples suitable for use with the audiogen module. ''' framed_data = frame(binary_data) # set volume to 1/2, preceed packet with 1/20 s silence to allow for startup glitches for sample in itertools.chain( audiogen.silence(1.05), multiply(modulate(framed_data), constant(0.5)), audiogen.silence(1.05), ): yield sample
def encode(binary_data):
'''
Encode binary data using Bell-202 AFSK
Expects a bitarray.bitarray() object of binary data as its argument.
Returns a generator of sound samples suitable for use with the
audiogen module.
'''
framed_data = frame(binary_data)
# set volume to 1/2, preceed packet with 1/20 s silence to allow for startup glitches
for sample in itertools.chain(
audiogen.silence(1.05),
multiply(modulate(framed_data), constant(0.5)),
audiogen.silence(1.05),
):
yield sample
#!/usr/bin/python
import audiogen
import sys
from audiogen.util import constant
#audiogen.sampler.write_wav(sys.stdout, audiogen.tone(440))
audiogen.sampler.play(
audiogen.util.mixer((audiogen.tone(50), audiogen.tone(52)), [
(constant(0.3), constant(0.3)),
]))