def test_powspec_vs_dan_ellis():
# MATLAB:
# [d, sr] = wavread('blues.00000.wav')
# ref_spectrum = powspec(d, sr, .04645, .04645, 0);
# size(ref_spectrum)
# --> [513 646]
# ref_spectrum(1:10, 1:5)
ref_spectrum = 1.0e+11 * numpy.asarray([
[0.0157, 0.0206, 0.0052, 0.00002, 0.0048],
[0.0475, 0.0024, 0.0418, 0.0227, 0.0690],
[0.2779, 0.2738, 0.1758, 0.3320, 0.0483],
[0.0818, 0.7200, 1.2436, 1.1854, 1.2359],
[0.0105, 0.0273, 0.2763, 0.1390, 0.6413],
[0.0748, 0.8080, 1.5515, 1.2973, 1.7614],
[0.0346, 3.5484, 2.9804, 3.0852, 0.0576],
[0.0131, 0.7809, 0.0450, 0.1524, 0.9599],
[0.0161, 0.5228, 0.4678, 0.3170, 0.5822],
[0.1017, 0.6875, 0.4384, 0.3327, 0.7367]])
M = theano.Module()
M.audiofeatures = AudioFeatures(sample_rate=22050, frame_len=1024)
frames = theano.tensor.dmatrix('frames')
M.powspec = theano.Method([frames], M.audiofeatures.powspec_from_fft(
fft=M.audiofeatures.fft(frames, half_fft=False, hamming=True),
scale_to_int_range=True))
m = theano.make_init(M)
pspec = m.powspec(load_blues_frames()[:100,:])
spectrum = pspec[0:5, 0:10].T
print spectrum
print abs(ref_spectrum - spectrum) / (ref_spectrum + spectrum)
assert 0.01 > numpy.max( abs(ref_spectrum - spectrum) / (ref_spectrum + spectrum))
def test_audiofeatures_fft():
M = theano.Module()
M.audiofeatures = AudioFeatures(sample_rate=22050, frame_len=1024)
frames = theano.tensor.dmatrix('x')
M.fft = theano.Method([frames], M.audiofeatures.fft(frames, half_fft=False))
m = theano.make_init(M)
rng = numpy.random.RandomState(4234)
xval = rng.randn(100, 1024)
assert numpy.allclose(m.fft(xval), numpy.fft.fft(xval, 1024, 1))
def test_audiofeatures_fft():
M = theano.Module()
M.audiofeatures = AudioFeatures(sample_rate=22050, frame_len=1024)
frames = theano.tensor.dmatrix('x')
M.fft = theano.Method([frames], M.audiofeatures.fft(frames,
half_fft=False))
m = theano.make_init(M)
rng = numpy.random.RandomState(4234)
xval = rng.randn(100, 1024)
assert numpy.allclose(m.fft(xval), numpy.fft.fft(xval, 1024, 1))
def test_mfcc_vs_dan_ellis():
# MATLAB
# ref_mfcc = melfcc(d, sr, 'wintime', 0.04645, 'hoptime', 0.04645, 'sumpower', 1, 'preemph', 0,
# 'lifterexp', 0, 'fbtype', 'htkmel');
# ref_mfcc(:,1:4)
ref_mfcc = numpy.asarray([[133.7590, 136.6686, 146.2690, 144.5163],
[5.3952, 9.0799, 5.2408, 4.4615],
[3.2458, 6.9730, 2.7541, 3.0766],
[2.9110, 3.6644, 4.5135, 5.8142],
[-1.7893, -1.8694, 0.1458, -0.1025],
[-1.8752, -2.1330, -1.2386, -0.6199],
[1.7157, 1.3612, -0.3314, -0.1711],
[0.8243, -0.9234, -1.5373, -1.0007],
[-1.4298, -1.8253, -1.1328, -0.8016],
[1.8595, 1.7053, 0.6195, 0.3924],
[0.0345, -0.7927, -1.7412, -0.9397],
[0.4872, -2.0002, 0.7030, -0.1565],
[1.5356, -0.3391, -0.2883, -0.8777]])
M = theano.Module()
M.audiofeatures = AudioFeatures(sample_rate=22050,
frame_len=1024,
n_bands=40,
critical_band_fn=mel.melhtk_4k)
print M.audiofeatures.n_bands
frames = theano.tensor.dmatrix('frames')
power = M.audiofeatures.powspec_from_fft(M.audiofeatures.fft(frames,
half_fft=True,
hamming=True),
scale_to_int_range=True)
audspec = M.audiofeatures.audspec_from_power(power)
print M.audiofeatures.n_bands
M.mfcc = theano.Method([frames],
outputs=[
M.audiofeatures.audcc_from_power(audspec,
n_audcc=13),
audspec
])
m = theano.make_init(M)
blah, ablah = m.mfcc(load_blues_frames()[:100, :])
assert ablah.shape == (100, 40)
assert blah.shape == (100, 13)
my_mfcc = blah[0:4, :13].T
rel_err = numpy.max(
abs(ref_mfcc - my_mfcc) / (abs(ref_mfcc) + abs(my_mfcc) + 1.0e-8))
if rel_err >= 0.01:
print 'BLAH SHAPE', blah.shape
print ablah[0:5, :13].T
print my_mfcc
print abs(ref_mfcc - my_mfcc) / (abs(ref_mfcc) + abs(my_mfcc) + 1.0e-8)
assert rel_err < 0.01
def test_mfcc_vs_dan_ellis():
# MATLAB
# ref_mfcc = melfcc(d, sr, 'wintime', 0.04645, 'hoptime', 0.04645, 'sumpower', 1, 'preemph', 0,
# 'lifterexp', 0, 'fbtype', 'htkmel');
# ref_mfcc(:,1:4)
ref_mfcc = numpy.asarray([
[133.7590, 136.6686, 146.2690, 144.5163],
[5.3952, 9.0799, 5.2408, 4.4615],
[3.2458, 6.9730, 2.7541, 3.0766],
[2.9110, 3.6644, 4.5135, 5.8142],
[-1.7893, -1.8694, 0.1458, -0.1025],
[-1.8752, -2.1330, -1.2386, -0.6199],
[1.7157, 1.3612, -0.3314, -0.1711],
[0.8243, -0.9234, -1.5373, -1.0007],
[-1.4298, -1.8253, -1.1328, -0.8016],
[1.8595, 1.7053, 0.6195, 0.3924],
[0.0345, -0.7927, -1.7412, -0.9397],
[0.4872, -2.0002, 0.7030, -0.1565],
[1.5356, -0.3391, -0.2883, -0.8777]])
M = theano.Module()
M.audiofeatures = AudioFeatures(sample_rate=22050, frame_len=1024, n_bands=40,
critical_band_fn=mel.melhtk_4k)
print M.audiofeatures.n_bands
frames = theano.tensor.dmatrix('frames')
power = M.audiofeatures.powspec_from_fft(
M.audiofeatures.fft(frames, half_fft=True, hamming=True),
scale_to_int_range=True)
audspec = M.audiofeatures.audspec_from_power(power)
print M.audiofeatures.n_bands
M.mfcc = theano.Method([frames],
outputs=[M.audiofeatures.audcc_from_power(audspec, n_audcc=13), audspec])
m = theano.make_init(M)
blah, ablah = m.mfcc(load_blues_frames()[:100,:])
assert ablah.shape == (100, 40)
assert blah.shape == (100, 13)
my_mfcc = blah[0:4,:13].T
rel_err = numpy.max( abs(ref_mfcc - my_mfcc) / (abs(ref_mfcc) + abs(my_mfcc)+1.0e-8))
if rel_err >= 0.01:
print 'BLAH SHAPE', blah.shape
print ablah[0:5,:13].T
print my_mfcc
print abs(ref_mfcc - my_mfcc) / (abs(ref_mfcc) + abs(my_mfcc) + 1.0e-8)
assert rel_err < 0.01
def test_audspec_vs_dan_ellis():
# MATLAB:
# [d, sr] = wavread('blues.00000.wav')
# ref_spectrum = powspec(d, sr, .04645, .04645, 0);
# size(ref_spectrum)
# --> [513 646]
# ref_audspec = audspec(ref_spectrum, sr, 12, 'htkmel');
ref_audspec = 1.0e+11 * numpy.asarray(
[[0.4252, 5.8783, 6.5783, 5.2775, 4.9325],
[0.3338, 1.0942, 1.6309, 0.9345, 1.2804],
[0.0944, 0.1080, 0.2539, 0.1605, 0.7033],
[0.0216, 0.0193, 0.3786, 0.2363, 0.4438],
[0.1064, 0.0938, 0.6994, 0.9129, 0.5748],
[0.2204, 0.2589, 2.2318, 0.9404, 0.7342],
[0.0296, 0.0305, 0.2253, 0.2793, 0.2129],
[0.0376, 0.0411, 0.1984, 0.1598, 0.0992],
[0.0191, 0.0368, 0.2006, 0.0545, 0.0567],
[0.0094, 0.0163, 0.1646, 0.0354, 0.0636]])
M = theano.Module()
M.audiofeatures = AudioFeatures(sample_rate=22050,
frame_len=1024,
n_bands=12)
frames = theano.tensor.dmatrix('frames')
power = M.audiofeatures.powspec_from_fft(M.audiofeatures.fft(frames,
half_fft=True,
hamming=True),
scale_to_int_range=True)
M.audspec = theano.Method(
[frames], outputs=M.audiofeatures.audspec_from_power(power))
m = theano.make_init(M)
aspec = m.audspec(load_blues_frames()[:100, :])
audspec = aspec[0:5, 0:10].T
print audspec
#print abs(ref_audspec - audspec) / (ref_audspec + audspec)
max_rel_err = numpy.max(
abs(ref_audspec - audspec) / (ref_audspec + audspec))
assert 0.01 > max_rel_err
def test_audspec_vs_dan_ellis():
# MATLAB:
# [d, sr] = wavread('blues.00000.wav')
# ref_spectrum = powspec(d, sr, .04645, .04645, 0);
# size(ref_spectrum)
# --> [513 646]
# ref_audspec = audspec(ref_spectrum, sr, 12, 'htkmel');
ref_audspec = 1.0e+11 * numpy.asarray([
[0.4252, 5.8783, 6.5783, 5.2775, 4.9325],
[0.3338, 1.0942, 1.6309, 0.9345, 1.2804],
[0.0944, 0.1080, 0.2539, 0.1605, 0.7033],
[0.0216, 0.0193, 0.3786, 0.2363, 0.4438],
[0.1064, 0.0938, 0.6994, 0.9129, 0.5748],
[0.2204, 0.2589, 2.2318, 0.9404, 0.7342],
[0.0296, 0.0305, 0.2253, 0.2793, 0.2129],
[0.0376, 0.0411, 0.1984, 0.1598, 0.0992],
[0.0191, 0.0368, 0.2006, 0.0545, 0.0567],
[0.0094, 0.0163, 0.1646, 0.0354, 0.0636]])
M = theano.Module()
M.audiofeatures = AudioFeatures(sample_rate=22050, frame_len=1024, n_bands=12)
frames = theano.tensor.dmatrix('frames')
power = M.audiofeatures.powspec_from_fft(
M.audiofeatures.fft(frames, half_fft=True, hamming=True),
scale_to_int_range=True)
M.audspec = theano.Method([frames],
outputs=M.audiofeatures.audspec_from_power(power))
m = theano.make_init(M)
aspec = m.audspec(load_blues_frames()[:100,:])
audspec = aspec[0:5, 0:10].T
print audspec
#print abs(ref_audspec - audspec) / (ref_audspec + audspec)
max_rel_err = numpy.max( abs(ref_audspec - audspec) / (ref_audspec + audspec))
assert 0.01 > max_rel_err
def test_powspec_vs_dan_ellis():
# MATLAB:
# [d, sr] = wavread('blues.00000.wav')
# ref_spectrum = powspec(d, sr, .04645, .04645, 0);
# size(ref_spectrum)
# --> [513 646]
# ref_spectrum(1:10, 1:5)
ref_spectrum = 1.0e+11 * numpy.asarray(
[[0.0157, 0.0206, 0.0052, 0.00002, 0.0048],
[0.0475, 0.0024, 0.0418, 0.0227, 0.0690],
[0.2779, 0.2738, 0.1758, 0.3320, 0.0483],
[0.0818, 0.7200, 1.2436, 1.1854, 1.2359],
[0.0105, 0.0273, 0.2763, 0.1390, 0.6413],
[0.0748, 0.8080, 1.5515, 1.2973, 1.7614],
[0.0346, 3.5484, 2.9804, 3.0852, 0.0576],
[0.0131, 0.7809, 0.0450, 0.1524, 0.9599],
[0.0161, 0.5228, 0.4678, 0.3170, 0.5822],
[0.1017, 0.6875, 0.4384, 0.3327, 0.7367]])
M = theano.Module()
M.audiofeatures = AudioFeatures(sample_rate=22050, frame_len=1024)
frames = theano.tensor.dmatrix('frames')
M.powspec = theano.Method([frames],
M.audiofeatures.powspec_from_fft(
fft=M.audiofeatures.fft(frames,
half_fft=False,
hamming=True),
scale_to_int_range=True))
m = theano.make_init(M)
pspec = m.powspec(load_blues_frames()[:100, :])
spectrum = pspec[0:5, 0:10].T
print spectrum
print abs(ref_spectrum - spectrum) / (ref_spectrum + spectrum)
assert 0.01 > numpy.max(
abs(ref_spectrum - spectrum) / (ref_spectrum + spectrum))
