btrack-beat-tracker 1.0.7

Python bindings for the BTrack beat tracker

BTrack Python Module

Here you can find Python bindings for the BTrack beat tracker.

Full details of the working of the BTrack algorithm can be found in:

• Musicians and Machines: Bridging the Semantic Gap in Live Performance, Chapter 3, A. M. Stark, PhD Thesis, Queen Mary, University of London, 2011.

• Real-Time Beat-Synchronous Analysis of Musical Audio, A. M. Stark, M. E. P. Davies and M. D. Plumbley. In Proceedings of the 12th International Conference on Digital Audio Effects (DAFx-09), Como, Italy, September 1-4, 2009.

1. Installation via PyPI:

pip install btrack-beat-tracker

2. Usage

Import btrack

import btrack_beat_tracker as btrack

Use Case A: Track beats from audio

audioData must be a 1 dimensional numpy array of audio samples (i.e. in mono) at 44100Hz

beats = btrack.detect_beats (audioData)

beats will be the estimated beat times in seconds

Use Case B: Extract onset detection function

audioData must be a 1 dimensional numpy array of audio samples (i.e. in mono) at 44100Hz

odf = btrack.calculate_onset_detection_function (audioData)

Use Case C: detect beats from the onset detection function

The onset detection function is calculated as per Use Case B above

odf_beats = btrack.detect_beats_from_odf (odf)

3. Build locally

Prerequisites

• Python 3.8+
• CMake 3.15+
• A C/C++ compiler
• NumPy installed (pip install numpy)
• libsamplerate

1) Clean any previous builds

python3 -m pip uninstall btrack_beat_tracker -y
rm -rf build/ dist/ \*.egg-info

2) Developer Quick Install

If you want to build and install the module directly for local development:

cd plugins/python-module
python3 -m pip install --force-reinstall .

4. License

Copyright (c) 2014 Queen Mary University of London

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

See the the main BTrack repository README for full licence details

https://github.com/adamstark/btrack