def onSaveBtnClick(self):
dialog = QFileDialog(self)
dialog.setFileMode(QFileDialog.AnyFile)
dialog.setNameFilter('Audio (*.wav)')
if dialog.exec_():
file_name = dialog.selectedFiles()[0] + '.wav'
ww = wave.open(file_name,'wb')
wf = self.wf
ww.setframerate(wf.getframerate())
ww.setsampwidth(wf.getsampwidth())
ww.setnchannels(wf.getnchannels())
self.wf.rewind()
self.chain.reset()
data = wf.readframes(wf.getnframes())
s = self.chain.filter(pcmToFloat(byteToPCM(data,wf.getsampwidth())))
ww.writeframes(bytes(floatToPCM(s)))
def callback(in_data, frame_count, time_info, status):
data = wf.readframes(frame_count)
if type(data) == type(''):
data = str.encode(data)
if len(data) < frame_count * sampw * nchan:
if self.loop_box.isChecked():
wf.rewind()
data = b''.join([data,
wf.readframes(frame_count - int(len(data) / (sampw * nchan)))])
self.chain.reset()
elif len(data) == 0:
return data, pyaudio.paComplete
filtered = self.chain.filter(pcmToFloat(byteToPCM(data,sampw)))
self.plotwin.updateSpectrum(np.fft.rfft(filtered))
return bytes(floatToPCM(filtered)), pyaudio.paContinue