audiostream.py 文件源码

def _process_frame(self, data, frame_count, time_info, status_flag):
        data_array = np.fromstring(data, dtype=np.int16)
        freq0 = self._spectral_analyser.process_data(data_array)
        if freq0:
            # Onset detected
            print("Note detected; fundamental frequency: ", freq0)
            midi_note_value = int(hz_to_midi(freq0)[0])
            print("Midi note value: ", midi_note_value)
            note = RTNote(midi_note_value, 100, 0.5)
            self._synth.play_note(note)
        return (data, paContinue)