def init_params_by_noise(self, fs, noise_signal):
noise_signal = self._mononize_signal(noise_signal)
self.noise_signal = np.array(noise_signal)
self._init_window(fs)
ltsd = LTSD(self.window_size, self.window, self.order)
res, ltsds = ltsd.compute_with_noise(noise_signal, noise_signal)
max_ltsd = max(ltsds)
self.lambda0 = max_ltsd * 1.1
self.lambda1 = self.lambda0 * 2.0
def init_params_by_noise(self, fs, noise_signal):
noise_signal = self._mononize_signal(noise_signal)
self.noise_signal = np.array(noise_signal)
self._init_window(fs)
ltsd = LTSD(self.window_size, self.window, self.order)
res, ltsds = ltsd.compute_with_noise(noise_signal,
noise_signal)
max_ltsd = max(ltsds)
self.lambda0 = max_ltsd * 1.1
self.lambda1 = self.lambda0 * 2.0
print 'max_ltsd =', max_ltsd
print 'lambda0 =', self.lambda0
print 'lambda1 =', self.lambda1
def _get_ltsd(self, fs=None):
if fs is not None and fs != self.fs:
self._init_window(fs)
return LTSD(self.window_size,
self.window,
self.order,
lambda0=self.lambda0,
lambda1=self.lambda1)
usage = "%python vad [-t THREASHOLD] [-w WINSIZE] [- s NOISETIME(ms)] "\
"INPUTFILE \n if INPUTFILE is \"-\", read wave data from stdin"
parser = optparse.OptionParser(usage=usage)
parser.add_option("-w", type="int", dest="winsize", default=WINSIZE)
parser.add_option("-t", type="int", dest="th", default=10)
parser.add_option("-s", type="int", dest="ntime", default=300)
(options, args) = parser.parse_args()
windowsize = options.winsize
fname = args[0]
signal, params = read(fname, options.winsize)
window = np.hanning(windowsize)
ntime = options.ntime
if params[0] == 1:
ltsd = LTSD(windowsize, window, 5, lambda0=options.th)
res, ltsds = ltsd.compute_with_noise(signal,
signal[0:windowsize*int(params[2]/float(windowsize)/(1000.0/ntime))])
write(params, vad(res, signal, windowsize, window))
elif params[0] == 2:
noise_sec = windowsize*int(params[2]/float(windowsize)/(1000.0/ntime))
l, r = separate_channels(signal)
ltsd_l = LTSD(windowsize, window, 5, lambda0=options.th)
ltsd_r = LTSD(windowsize, window, 5, lambda0=options.th)
l_out = vad(ltsd_l.compute_without_noise(l, noise_sec)[0], l, windowsize, window)
r_out = vad(ltsd_r.compute_without_noise(r, noise_sec)[0], r, windowsize, window)
out = uniting_channles(l_out, r_out)
write(params, out)
)
parser.add_option("-w", type="int", dest="winsize", default=WINSIZE)
parser.add_option("-t", type="int", dest="th", default=15)
parser.add_option("-s", type="int", dest="ntime", default=300)
(options, args) = parser.parse_args()
windowsize = options.winsize
fname = args[0]
signal, params = read(fname, options.winsize)
window = sp.hanning(windowsize)
ntime = options.ntime
if params[0] == 1:
ltsd = LTSD(windowsize, window, 5, lambda0=options.th)
res, ltsds = ltsd.compute_with_noise(
signal, signal[0:windowsize * int(params[2] / float(windowsize) /
(1000.0 / ntime))]) #maybe 300ms
write(params, vad(res, signal, windowsize, window))
elif params[0] == 2:
l, r = separate_channels(signal)
ltsd_l = LTSD(windowsize, window, 5, lambda0=options.th)
ltsd_r = LTSD(windowsize, window, 5, lambda0=options.th)
out = uniting_channles(
vad(
ltsd_l.compute_with_noise(
l, l[0:windowsize * int(params[2] / float(windowsize) /
(1000.0 / ntime))])[0], l,
windowsize, window),
vad(
if __name__ == "__main__":
"""
python vad.py -w WINSIZE -t THREATHOLD FILENAME
"""
parser = optparse.OptionParser(
usage=
"%python vad INPUTFILE \n if INPUTFILE is \"-\", read wave data from stdin"
)
parser.add_option("-t", type="int", dest="th", default=10)
(options, args) = parser.parse_args()
windowsize = 1024
fname = args[0]
signal, params = read(fname, windowsize)
window = sp.hanning(windowsize)
mhmm, nhmm = get_model("hmm.model", "noisyhmm.model")
if params[0] == 1:
ltsd = LTSD(windowsize, window, 6, lambda0=options.th)
res, ltsds = ltsd.compute_with_noise(
signal,
signal[0:windowsize *
int(params[2] / float(windowsize) / 3.0)]) #maybe 300ms
print res
res = hmm_filter(mhmm, nhmm, signal, res, windowsize, window)
print res
#write(params,vad(res,signal,windowsize,window))
elif params[0] == 2:
write(params, signal)