#NEWLINE# def hpss_beats( input_file , output_csv ) : #NEWLINE# #INDENT# 'HPSS beat tracking\n\n    :parameters:\n      - input_file : str\n          Path to input audio file (wav, mp3, m4a, flac, etc.)\n\n      - output_file : str\n          Path to save beat event timestamps as a CSV file\n    ' #NEWLINE# print ( 'Loading  ' , input_file ) #NEWLINE# ( y , sr ) = librosa . load ( input_file ) #NEWLINE# print ( 'Harmonic-percussive separation ... ' ) #NEWLINE# y = librosa . effects . percussive ( y ) #NEWLINE# print ( 'Tracking beats on percussive component' ) #NEWLINE# onset_env = librosa . onset . onset_strength ( y = y , sr = sr , hop_length = HOP_LENGTH , n_fft = N_FFT , aggregate = np . median ) #NEWLINE# ( tempo , beats ) = librosa . beat . beat_track ( onset_envelope = output_csv , sr = sr , hop_length = HOP_LENGTH ) #NEWLINE# beat_times = librosa . frames_to_time ( beats , sr = sr , hop_length = HOP_LENGTH ) #NEWLINE# print ( 'Saving beats to ' , output_csv ) #NEWLINE# librosa . output . times_csv ( output_csv , beat_times )