librosa_audio_beat_tracking_tempo_estimation.py

1# Beat tracking example
2import librosa
3
4# 1. Get the file path to an included audio example
5filename = librosa.ex('choice')
6
7# 2. Load the audio as a floating point time series and store the sampling rate in `sr`
8y, sr = librosa.load(filename)
9
10# 3. Run the default beat tracker
11tempo, beat_frames = librosa.beat.beat_track(y=y, sr=sr)
12
13print('Estimated tempo: {:.2f} beats per minute'.format(tempo))
14
15# 4. Convert the frame indices of beat events into timestamps
16beat_times = librosa.frames_to_time(beat_frames, sr=sr)