parser.add_argument("-w", metavar="file", nargs='+', required=True, help='Audio Input file name')
parser.add_argument("-o", metavar="file", required=True, help='Audio Output file name')
# ----------------------------------------------------------------------------
if len(sys.argv) <= 1:
sys.argv.append('-h')
args = parser.parse_args()
# ----------------------------------------------------------------------------
mixer = ChannelsMixer()
for inputFile in args.w:
audio = audiodata.open(inputFile)
idx = audio.extract_channel(0)
mixer.append_channel(audio.get_channel(idx))
newchannel = mixer.mix()
# Save the converted channel
audio_out = AudioPCM()
audio_out.append_channel( newchannel )
audiodata.save( args.o, audio_out )
# ----------------------------------------------------------------------------
# Verify and extract args:
# ----------------------------------------------------------------------------
parser = ArgumentParser(usage="%s -o output file [options]" % os.path.basename(PROGRAM), description="A script to apply high-pass filter (development version)")
parser.add_argument("-i", metavar="file", required=True, help='Audio Input file name')
parser.add_argument("-o", metavar="file", required=True, help='Audio Output file name')
if len(sys.argv) <= 1:
sys.argv.append('-h')
args = parser.parse_args()
# ----------------------------------------------------------------------------
audioin = audiodata.open( args.i )
SAMPLE_RATE = audioin.get_framerate()
# ----------------------------------------------------------------------------
# IIR filter coefficients
freq = 2000 # Hz
r = 0.98
a1 = -2.0 * r * math.cos(freq / (SAMPLE_RATE / 2.0) * math.pi)
a2 = r * r
filter = [a1, a2]
print filter
n = audioin.get_nframes()
original = struct.unpack('%dh' % n, audioin.read_frames(n))
original = [s / 2.0**15 for s in original]
parser.add_argument("-bs", default=0, metavar="value", type=float, help='The position (in seconds) when begins the mix, don\'t use with -bf')
parser.add_argument("-es", default=0, metavar="value", type=float, help='The position (in seconds) when ends the mix, don\'t use with -ef')
parser.add_argument("-bf", default=0, metavar="value", type=float, help='The position (in number of frames) when begins the mix, don\'t use with -bs')
parser.add_argument("-ef", default=0, metavar="value", type=float, help='The position (in number of frames) when ends the mix, don\'t use with -es')
# ----------------------------------------------------------------------------
if len(sys.argv) <= 1:
sys.argv.append('-h')
args = parser.parse_args()
# ----------------------------------------------------------------------------
audio_out = AudioPCM()
audio = audiodata.open(args.w)
if args.bf and args.bs:
print "bf option and bs option can't be used at the same time !"
sys.exit(1)
if args.ef and args.es:
print "ef option and es option can't be used at the same time !"
sys.exit(1)
if args.bf:
begin = args.bf
elif args.bs:
begin = args.bs*audio.get_framerate()
else:
begin = 0
