def featureExtractionFileWrapper(wav_file, out_file, mt_win, mt_step,
st_win, st_step):
if not os.path.isfile(wav_file):
raise Exception("Input audio file not found!")
aF.mtFeatureExtractionToFile(wav_file, mt_win, mt_step, st_win,
st_step, out_file, True, True, True)
def featureExtractionFileWrapper(wav_file, out_file, mt_win, mt_step, st_win,
st_step):
if not os.path.isfile(wav_file):
raise Exception("Input audio file not found!")
aF.mtFeatureExtractionToFile(wav_file, mt_win, mt_step, st_win, st_step,
out_file, True, True, True)
def feature_extraction(filename):
wavFileName = filename.replace('.mp3','.wav')
name = filename.replace('.mp3','')
command = 'avconv -i ' + filename + ' ' + wavFileName
os.system(command)
audioFeatureExtraction.mtFeatureExtractionToFile(wavFileName,2.0, 2.0, 0.050, 0.050,name,storeStFeatures=True,storeToCSV=True)
return name + '.csv'
def featureExtractionFileWrapper(wavFileName, outFile, mtWin, mtStep, stWin,
stStep):
if not os.path.isfile(wavFileName):
raise Exception("Input audio file not found!")
aF.mtFeatureExtractionToFile(wavFileName, mtWin, mtStep, stWin, stStep,
outFile, True, True, True)
def extract_mid_features(input_file):
class_names = [os.path.basename(input_file)]
features = []
fs, x = readAudioFile(input_file)
x = stereo2mono(x)
mt_size, mt_step, st_win, st_step = 1, 0.4, 0.025, 0.010
[mt_feats, st_feats, _] = mtFeatureExtraction(x, fs, mt_size * fs,
mt_step * fs,
round(st_win * fs),
round(st_step * fs))
mtFeatureExtractionToFile(input_file, mt_size, mt_step, st_win,
st_step, input_file, False, True, True)
return mt_feats, st_feats, _
def extract_features(filename):
''' Extracts features from a file of audio data
Parameters:
filename
str, the name of the file to extract features from
Returns:
filename to extracted features
'''
# base name of output file
output_filename = "computed_features_file"
# base list of feature names for labelng with json
feature_names = ("Zero_Crosing_Rate", "Energy", "Entropy_of_Energy",
"Spectral_Centroid", "Spectral_Spread",
"Spectral_Entropy", "Spectral_Flux", "Spectral_Rollof",
"MFCC_1", "MFCC_2", "MFCC_3", "MFCC_4", "MFCC_5",
"MFCC_6", "MFCC_7", "MFCC_8", "MFCC_9", "MFCC_10",
"MFCC_11", "MFCC_12", "MFCC_13", "Chroma_Vector_1",
"Chroma_Vector_2", "Chroma_Vector_3", "Chroma_Vector_4",
"Chroma_Vector_5", "Chroma_Vector_6", "Chroma_Vector_7",
"Chroma_Vector_8", "Chroma_Vector_9", "Chroma_Vector_10",
"Chroma_Vector_11", "Chroma_Vector_12",
"Chroma_Deviation")
# arguments 2 and 3 are not in use
# argument 7 and 8 store short term features and enable csv output respectively
afe.mtFeatureExtractionToFile(filename, 1, 1, .05, .025, output_filename,
True, True, False)
# convert to json format
csv_features = open(output_filename + '_st.csv', 'r')
# add feature names as json keys
json_features = []
reader = csv.DictReader(csv_features, feature_names)
# add rows to json list
for row in reader:
json_features.append(row)
csv_features.close()
# remove unnecessary files
os.remove(output_filename + ".csv")
os.remove(output_filename + ".npy")
os.remove(output_filename + "_st.csv")
os.remove(output_filename + "_st.npy")
# return the list of formatted features
return json_features
def Audio_Feature_Extraction_Extract_Directory(self):
pathToSaveFiles = QFileDialog.getExistingDirectory(
self.somethingToPass, "Select Directory to Save Files")
i = 0
path = self.Audio_Feature_Extraction_DirectoryPath.text()
extractionList = []
nameList = []
tempHold = []
for root, directs, files in os.walk(path):
for x in files:
extractionList.append(root + "/" + x)
nameList.append(x)
for name in nameList:
x = name.split('.')
tempHold.append(x[0])
nameList = tempHold
if self.Audio_Feature_Extraction_DirectoryWindowTerm.currentText(
) == "ShortTerm":
for audio in extractionList:
[Fs, x] = audioBasicIO.readAudioFile(audio)
print(audio)
stFeatures = audioFeatureExtraction.stFeatureExtraction(
x, Fs,
float(self.Audio_Feature_Extraction_DirectoryWindowSize.
text()) * Fs,
float(
self.Audio_Feature_Extraction_DirectoryStepSize.text())
* Fs)
#I think the files are overwriting each other. I am getting
#299 files but it should be 5134. I changed the namelist[i] to
#just i
numpy.savetxt(pathToSaveFiles + "/" + str(i) + ".csv",
stFeatures,
delimiter=',')
i += 1
QMessageBox.about(self.somethingToPass, "Files Created",
"Files have been saved as CSV files.")
else:
for x in extractionList:
audioFeatureExtraction.mtFeatureExtractionToFile(
x,
float(self.
Audio_Feature_Extraction_DirectorymidTermWindowSize.
text()),
float(
self.
Audio_Feature_Extraction_DirectorymidTermWindowStepSize
.text()),
float(self.Audio_Feature_Extraction_DirectoryWindowSize.
text()),
float(self.Audio_Feature_Extraction_DirectoryStepSize.text(
)),
pathToSaveFiles + "/" + nameList[i],
storeStFeatures=True,
storeToCSV=True,
PLOT=False)
i += 1
QMessageBox.about(
self.somethingToPass, "Files Created",
"Files have been saved as CSV files and .npy files. There ")
def Audio_Feature_Extraction_Extract(self):
if self.Audio_Feature_Extraction_SingleFileWindowTerm.currentText(
) == "ShortTerm":
[Fs, x] = audioBasicIO.readAudioFile(
self.Audio_Feature_Extraction_SingleFilePath.text())
stFeatures = audioFeatureExtraction.stFeatureExtraction(
x, Fs,
float(
self.Audio_Feature_Extraction_SingleFileWindowSize.text())
* Fs,
float(self.Audio_Feature_Extraction_SingleFileStepSize.text())
* Fs)
options = QFileDialog.Options()
options |= QFileDialog.DontUseNativeDialog
fileName, _ = QFileDialog.getSaveFileName(self.somethingToPass,
"Where to save?",
"",
"CSV files (*.csv)",
options=options)
numpy.savetxt(fileName + ".csv", stFeatures, delimiter=',')
QMessageBox.about(self.somethingToPass, "Files Created",
"File has been saved as CSV file")
## Let the User specify how many features and what features to see eventually.
#==============================================================================
# if self.Audio_Feature_Extraction_SingleFileDataVisualisation.isChecked():
# stFeatures = audioFeatureExtraction.stFeatureExtraction(x, Fs, 0.050*Fs, 0.025*Fs)
#
# labels = ["Zero Crossing Rate", "Energy", "Entropy of Energy", "Spectral Centroid",
# "Spectral Spread", "Spectral Entropy", "Spectral Flux", "Spectral Rolloff",
# "MFCC 1", "MFCC 2", "MFCC 3", "MFCC 4",
# "MFCC 5", "MFCC 6", "MFCC 7", "MFCC 8",
# "MFCC 9", "MFCC 10", "MFCC 11", "MFCC 12", "MFCC 13",
# "Chroma Vector 1", "Chroma Vector 2", "Chroma Vector 3", "Chroma Vector 4",
# "Chroma Vector 5", "Chroma Vector 6", "Chroma Vector 7", "Chroma Vector 8",
# "Chroma Vector 9", "Chroma Vector 10", "Chroma Vector 11","Chroma Vector 12", "Chroma Deviation"]
#
#
# for x in range(0, len(labels)-1):
# plt.subplot(34,1,x+1); plt.plot(stFeatures[x,:]); plt.xlabel('Frame no'); plt.ylabel(labels[x])
#
# plt.show()
#
#==============================================================================
else:
options = QFileDialog.Options()
options |= QFileDialog.DontUseNativeDialog
fileName, _ = QFileDialog.getSaveFileName(self.somethingToPass,
"Where to save?",
"",
"CSV files (*.csv)",
options=options)
audioFeatureExtraction.mtFeatureExtractionToFile(
self.Audio_Feature_Extraction_SingleFilePath.text(),
float(
self.Audio_Feature_Extraction_SingleFilemidTermWindowSize.
text()),
float(self.
Audio_Feature_Extraction_SingleFilemidTermWindowStepSize.
text()),
float(
self.Audio_Feature_Extraction_SingleFileWindowSize.text()),
float(self.Audio_Feature_Extraction_SingleFileStepSize.text()),
fileName,
storeStFeatures=True,
storeToCSV=True,
PLOT=False)
QMessageBox.about(
self.somethingToPass, "Files Created",
"Files have been saved as CSV files and .npy files")
