def __init__(self, wave):
assert wave.getnchannels() == 1
WaveStream.__init__(self, wave)
chunksize = self.getframerate() / 2000
threshold = 5
chunk = self.wave.readframes(chunksize)
position = len(chunk)
rms = calculate_rms_dB(chunk)
while True:
newchunk = self.wave.readframes(chunksize)
position += len(newchunk)
newrms = calculate_rms_dB(newchunk)
if newrms <= -96.0: continue
if newrms - rms > threshold:
self.audio_onset_sample = position - len(chunk) - len(newchunk)
self.buf = numpy.hstack([chunk, newchunk])
return
chunk = newchunk
rms = newrms
raise NoAudioOnset, "No audio onset could be found"
def __init__(self,wave): assert wave.getnchannels() == 1 WaveStream.__init__(self,wave) chunksize = self.getframerate() / 2000 threshold = 5 chunk = self.wave.readframes(chunksize) position = len(chunk) rms = calculate_rms_dB(chunk) while True: newchunk = self.wave.readframes(chunksize) position = position + len(newchunk) newrms = calculate_rms_dB(newchunk) if newrms <= -96.0: continue if newrms - rms > threshold: self.audio_onset_sample = position - len(chunk) - len(newchunk) self.buf = numpy.hstack( [ chunk, newchunk ] ) return chunk = newchunk rms = newrms raise NoAudioOnset, "No audio onset could be found"
if filename.lower().endswith(".flac"): return FLACDecoder(filename)
if filename.lower().endswith(".ogg"): return VorbisDecoder(filename)
return WaveStream(wave.open(file(filename)))
if __name__ == "__main__":
import sys
print "\nMP3Decoder"
print sys.argv[1]
o = AudioOnsetDiscarder(MonoStream(FloatStream(NumPyStream(decode(sys.argv[1])))))
print o.audio_onset_sample
data = o.readframes(44100 * 3)
print len(data)
rms = calculate_rms_dB(data, 1.0)
print rms
#print data[512:768]*32768
from audioprocessing.util import play
data = (data * 32768).astype("int16").tostring()
play(data)
__all__ = [
'WaveStream',
'NumPyStream',
'FloatStream',
'MonoStream',
'AudioOnsetDiscarder',
'NoAudioOnset',
if filename.lower().endswith(".flac"): return FLACDecoder(filename)
return WaveStream(wave.open(file(filename)))
if __name__ == "__main__":
import sys
print "\nMP3Decoder"
print sys.argv[1]
o = AudioOnsetDiscarder(MonoStream(FloatStream(NumPyStream(decode(sys.argv[1])))))
print o.audio_onset_sample
data = o.readframes(44100*3)
print len(data)
rms = calculate_rms_dB(data,1.0)
print rms
#print data[512:768]*32768
from audioprocessing.util import play
data = (data * 32768).astype("int16").tostring()
play(data)
__all__ = [
'WaveStream',
'NumPyStream',
'FloatStream',
'MonoStream',
'AudioOnsetDiscarder',
'NoAudioOnset',
