def test_Mix(self):
self._sample_1.extract_channel(0)
self._sample_2.extract_channel(0)
formatter1 = ChannelFormatter(self._sample_1.get_channel(0))
formatter1.set_framerate(16000)
formatter1.set_sampwidth(2)
formatter1.convert()
formatter2 = ChannelFormatter(self._sample_2.get_channel(0))
formatter2.set_framerate(16000)
formatter2.set_sampwidth(2)
formatter2.convert()
equalizer = ChannelsEqualizer()
equalizer.append_channel(formatter1.channel)
equalizer.append_channel(formatter2.channel)
equalizer.equalize()
mixer = ChannelsMixer()
mixer.append_channel(equalizer.get_channel(0))
mixer.append_channel(equalizer.get_channel(1))
newchannel = mixer.mix()
self.assertEqual(newchannel.get_nframes(), equalizer.get_channel(0).get_nframes())
self.assertEqual(newchannel.get_nframes(), equalizer.get_channel(1).get_nframes())
def export(self, inputname, outputname):
"""
Create a new wav file with requested parameters.
@param inputname (string) name of the inputfile
@param reqSamplewidth (string) name of the outputfile
"""
toconvert = False
audio = signals.open(inputname)
if (audio.get_sampwidth() < self._reqSamplewidth):
raise NameError("The sample width of ("+str(audio.get_sampwidth())+") of the given file is not appropriate. " + str(self._reqSamplewidth) + " bytes required")
if (audio.get_framerate() < self._reqFramerate):
raise NameError("The framerate of ("+str(audio.get_framerate())+") of the given file is not appropriate. " + str(self._reqFramerate) + " Hz required")
if (self._reqSamplewidth != audio.get_sampwidth()):
toconvert = True
if self._logfile:
self._logfile.print_message("The sample width of ("+str(audio.get_sampwidth())+") of the given file is not appropriate. Sample width is changed to " + str(self._reqSamplewidth) + " bytes", indent=3, status=1)
if (self._reqChannels != audio.get_nchannels()):
toconvert = True
if self._logfile:
self._logfile.print_message("The number of channels of ("+str(audio.get_nchannels())+") of the given file is not appropriate. Number of channels is changed to " + str(self._reqChannels) + " channels", indent=3, status=1)
if (self._reqFramerate != audio.get_framerate()):
toconvert = True
if self._logfile:
self._logfile.print_message("The framerate of ("+str(audio.get_framerate())+") of the given file is not appropriate. Framerate is changed to " + str(self._reqFramerate) + " Hz", indent=3, status=1)
if toconvert is True:
# Get the expected channel
idx = audio.extract_channel(0)
# no more need of input data, can close
audio.close()
# Do the job (do not modify the initial channel).
formatter = ChannelFormatter( audio.get_channel(idx) )
formatter.set_framerate(self._reqFramerate)
formatter.set_sampwidth(self._reqSamplewidth)
formatter.convert()
# Save the converted channel
audio_out = Audio()
audio_out.append_channel( formatter.channel )
signals.save( outputname, audio_out )
return toconvert
sys.exit(1)
# ----------------------------------------------------------------------------
print (time.strftime("%H:%M:%S"))
audio = signals.open(args.w)
# Get the expected channel
idx = audio.extract_channel(args.c-1)
# no more need of input data, can close
audio.close()
print (time.strftime("%H:%M:%S"))
# Do the job (do not modify the initial channel).
formatter = ChannelFormatter( audio.get_channel(idx) )
if args.r:
formatter.set_framerate(args.r)
if args.b:
formatter.set_sampwidth(args.b)
formatter.convert()
print (time.strftime("%H:%M:%S"))
# Save the converted channel
audio_out = Audio()
audio_out.append_channel( formatter.channel )
signals.save( args.o, audio_out )
print (time.strftime("%H:%M:%S"))
# ----------------------------------------------------------------------------