def _wav2feats(wavname):
"""
Extract features for wav 16k mono
"""
ext = os.path.splitext(wavname)[-1]
assert ext.lower() == '.wav' or ext.lower() == '.wave'
sig, read_framerate, sampwidth = read_wav(wavname)
shp = sig.shape
# wav should contain a single channel
assert len(shp) == 1 or (len(shp) == 2 and shp[1] == 1)
# wav sample rate should be 16000 Hz
assert read_framerate == 16000
# LP: to be checked when sampwidth == 4
# assert sampwidth == 2
sig *= (2**(15 - sampwidth))
with warnings.catch_warnings() as w:
# ignore warnings resulting from empty signals parts
warnings.filterwarnings('ignore',
message='divide by zero encountered in log',
category=RuntimeWarning,
module='sidekit')
_, loge, _, mspec = mfcc(sig.astype(np.float32), get_mspec=True)
# Management of short duration segments
difflen = 0
if len(loge) < 68:
difflen = 68 - len(loge)
warnings.warn(
"media %s duration is short. Robust results require length of at least 720 milliseconds"
% wavname)
mspec = np.concatenate((mspec, np.ones((difflen, 24)) * np.min(mspec)))
#loge = np.concatenate((loge, np.ones(difflen) * np.min(mspec)))
return mspec, loge, difflen
def _wav2feats(wavname):
"""
"""
ext = os.path.splitext(wavname)[-1]
assert ext.lower() == '.wav' or ext.lower() == '.wave'
sig, read_framerate, sampwidth = read_wav(wavname)
shp = sig.shape
# wav should contain a single channel
assert len(shp) == 1 or (len(shp) == 2 and shp[1] == 1)
# wav sample rate should be 16000 Hz
assert read_framerate == 16000
sig *= (2**(15 - sampwidth))
_, loge, _, mspec = mfcc(sig.astype(np.float32), get_mspec=True)
return mspec, loge
def _wav2feats(wavname):
"""
"""
ext = os.path.splitext(wavname)[-1]
assert ext.lower() == '.wav' or ext.lower() == '.wave'
sig, read_framerate, sampwidth = read_wav(wavname)
shp = sig.shape
# wav should contain a single channel
assert len(shp) == 1 or (len(shp) == 2 and shp[1] == 1)
# wav sample rate should be 16000 Hz
assert read_framerate == 16000
assert sampwidth == 2
sig *= (2**(15 - sampwidth))
with warnings.catch_warnings() as w:
# ignore warnings resulting from empty signals parts
warnings.filterwarnings('ignore',
message='divide by zero encountered in log',
category=RuntimeWarning,
module='sidekit')
_, loge, _, mspec = mfcc(sig.astype(np.float32), get_mspec=True)
return mspec, loge