def wavLCollection2datXy(wavLabelCollection, fs=None, featExtFun=None):
"""
returns the data object of a collection of labelled wavs
..... call type (classification) ....
Parameters
----------
wavLabelCollection : list of tuples
tu[0] : path to wav file
tu[1] : wav label
featExtFun : callable
Return
------
> datO: myML.dataXy_names
data
"""
datO = myML.dataXy_names() # initialise data object
for wavF, l in wavLabelCollection:
waveForm, fs = wav2waveform(wavF, fs=fs) # , normalize=False)
M = featExtFun(waveForm)
datO.addInstances(np.expand_dims(M.flatten(), axis=0), [l])
# print(np.shape(M0), datO.shape, np.shape(datO.y), os.path.basename(wavF))
return datO
def WSD2predictAnnotations(wavF,
annWSD1,
feExtFun,
lt,
WSD2_clf,
outF,
readSections,
keepSections='default',
dt=0):
"""Generate annotations using the WSD2
reads the predicted sections from WSD1 to predicts
the finer structure of the calls
with clf trained with a smaller nTextWS
Parameters
----------
wavF: str
wavefile name
feExFun: callable
feature extraction function
lt: LabelEncoder
label transformation object
WSD2_clf: estimator
model for estimating predictions
outF: str
name of the output annotations
readSections: list like object
array with the ann sections from WSD1 we want to reinterpret, default = ['c']
keepSections: list like object
array with the ann sections we want to print
dt: float
time buffer for reading around the desired annotation section
"""
if keepSections is 'default':
keepSections = ['c']
try:
os.remove(outF)
except OSError:
pass
waveform, fs = sT.wav2waveform(wavF) # load waveform
A = annT.anns2array(annWSD1) # load annotations
for t0i, t0f, l0 in A[:]: # for each ann section
if l0 in readSections: # if section of interest (c)
thisWaveform = auf.getWavSec(waveform, fs, t0i - dt, t0f + dt)
## predict annotations
T, L = predictAnnotations(thisWaveform, fs, feExtFun, lt,
WSD2_clf) #annSections=keepSections)
newT = T + t0i - dt # relative to the orginal ann sections
mask = np.in1d(L, keepSections)
outF = annT.save_TLannotations(newT[mask, :],
L[mask],
outF,
opening_mode='a')
return outF
def WSD2predictionsTLanns(wavF,
annWSD1,
feExtFun,
lt,
WSD2_clf,
readSections,
dt=0): #keepSections=None
"""Generate annotations using the WSD2
reads the predicted sections from WSD1 to predicts
the finer structure of the calls
with clf trained with a smaller nTextWS
Parameters
----------
wavF: str
wavefile name
feExFun: callable
feature extraction function
lt: LabelEncoder
label transformation object
WSD2_clf: estimator
model for estimating predictions
readSections: list like object
array with the ann sections from WSD1 we want to reinterpret
dt: float
time buffer for reading around the desired annotation section
keepSections: (DEPRECATED) list like object
"""
waveform, fs = sT.wav2waveform(wavF) # load waveform
A = annT.anns2array(annWSD1) # load annotations
newT_list = []
newL_list = []
for t0i, t0f, l0 in A[:]: # for each ann section
if l0 in readSections: # if section of interest (c)
thisWaveform = auf.getWavSec(waveform, fs, t0i - dt, t0f + dt)
## predict annotations
secT, secL = predictAnnotations(thisWaveform, fs, feExtFun, lt,
WSD2_clf)
newSectT = secT + t0i - dt # relative to the orginal ann sections
newT_list.append(newSectT)
newL_list.append(secL)
#outF = annT.save_TLannotations(newT, L, outF, opening_mode='a')
newL = np.hstack((newL_list))
newT = np.vstack((newT_list))
return newT, newL
def TLpredictAnnotationSections(wavF,
annF,
clf,
featExtFun,
lt,
printProbs=False,
readSections=None,
printreadSectionsC=True):
"""generates annotations predicting audio section classes
Parameters
----------
wavF : str
annF : str
path to the file with the annotation section to predict
clf : estimator
featExtFun : callable
lt : labelTransformer
printProbs : bool
readSections : list of str
regions in the annF for which we predict
printreadSectionsC : bool
"""
## load annotations
waveform, fs = sT.wav2waveform(wavF)
T, L0 = annT.anns2TLndarrays(annF)
## set of annotation-sections to predict
if readSections is None:
readSections = np.array(list(set(L0)))
## filter for sections of interest
IO_sections = np.isin(L0, readSections)
Tp = T[IO_sections]
L = L0[IO_sections]
Lp = np.zeros_like(L)
## for each annotation section
for i, label in enumerate(L): # for each section
waveformSec = auf.getWavSec(waveform, fs,
*Tp[i]) # load waveform section
M0 = featExtFun(waveformSec) # extract features
M = np.expand_dims(M0.flatten(), axis=0)
Lp[i] = lt.num2nom(clf.predict(M))[0] # predict
return Tp, Lp
def get_DataXy_fromWavFannF(wavF, annF, feExFun, labelsHierarchy):
"""
extracts features and its labels (ground truth) from wavF and annF files
and returns its dataXy_names instance
----------
wavF: str
annF: str
feExFun: callable
labelsHierarchy: list
"""
# np.loadtxt(collFi, delimiter='\t', dtype='|S')
# print("\n==========\nTEST\n==============",wavF)
waveForm, fs = wav2waveform(wavF)
tf = len(waveForm) / fs
M0 = feExFun(waveForm)
m = len(M0)
y0_names = auf.annotationsFi2instances(annF,
m,
tf,
labelsHierarchy=labelsHierarchy)
datO = myML.dataXy_names(M0, y0_names)
return datO
def predictSoundSections(wavF,
clf,
lt,
feExFun,
outF='default',
annSections='default'):
'''
predicts and generates the annotations of the given wavF walking
Parameters:
-----------
wavF : str
path to wav file
clf : estimator
classifier object
lt : label transformer object
feExFun : callable
feature extraction
out : str
annotations out file name, default = wav base name + '-predictions'
annSections : array
sections to print, default = ['c']
'''
if outF == 'default':
bN = os.path.basename(wavF)
outF = os.path.join(outDir, bN.replace('.wav', '-predictions.txt'))
waveForm, fs = sT.wav2waveform(wavF)
oF = predictSectionsFromWaveform_genAnnotations(waveForm,
fs,
clf,
lt,
feExFun,
outF=outF,
annSections=annSections)
return oF
def predictAnnotationSections(wavF,
annF,
clf,
featExtFun,
lt,
outFile=None,
sep='\t',
printProbs=False,
header='',
readSections=None,
printreadSectionsC=True):
"""predicts annotations for call types sections
Parameters
----------
wavF: str
annF: str
clf: estimator
featExtFun: callable
lt: labelTransformer
outFil: str
sep: str
printProbs: bool
header: str
readSections: list of str
regions in the annF for which we predict
printreadSectionsC: bool
See also
--------
TLpredictAnnotationSections
TODO: recode to use TLpredictAnnotationSections
"""
if outFile is None:
outFile = os.path.splitext(annF)[0] + '-sectionPredictions.txt'
try: # remove file if exists
os.remove(outFile)
except OSError:
pass
## load files
waveform, fs = sT.wav2waveform(wavF)
T, L = annT.anns2TLndarrays(annF)
if readSections == None:
readSections = list(set(L))
## for each annotation section
for i, label in enumerate(L):
if label in readSections:
waveformSec = auf.getWavSec(waveform, fs, *T[i])
## predict
try:
M0 = featExtFun(waveformSec) # estract features
M = np.expand_dims(M0.flatten(), axis=0)
y_pred = lt.num2nom(clf.predict(M)) # predict label
except AssertionError:
y_pred = [label]
## write
with open(outFile, 'a') as f:
f.write("{}\t{}\t{}\t{}\n".format(T[i, 0], T[i, 1], label,
*y_pred))
elif printreadSectionsC:
with open(outFile, 'a') as f:
f.write("{}\t{}\t{}\t{}\n".format(T[i, 0], T[i, 1], label,
label))
return outFile
