soxbindings 1.2.0

Python bindings for sox.

[](https://pepy.tech/project/soxbindings)  

Python bindings for SoX. An attempt to bind a subset of the capabilities of the SoX command line utility but in Python via bindings for speed. This avoids costly exec calls when using augmentations in SoX. This is a work in progress! Help welcome.

soxbindings only supports Unix systems (Linux and OSX), due to how one builds sox. A related library (torchaudio) has similar problems: https://github.com/pytorch/audio/issues/425.

Install from pip

If on MacOS or Linux, just do:

pip install soxbindings

If on Windows, it’s not supported but you could install sox from source, and then link libsox and get everything working possibly. If you do and figure out an automated way to do it using cibuildwheel, please put in a PR adding Windows support!

Installation from source

On Unix (Linux, OS X) using Anaconda

• clone this repository

• Make a conda environment

• conda install -c conda-forge sox

• If on Linux:

  • Option 1: conda install gcc_linux-64 gxx_linux-64

  • Option 2: sudo apt-get install sox libsox-dev

  • Option 3: build and install sox from source (e.g. as in .github/workflows/build_install_sox_centos.sh).

• pip install -e .

Run the tests to make sure everything works:

`bash pip install -r extra_requirements.txt python -m pytest . `

The tests run a large variety of commands, all pulled from the pysox test cases. SoxBindings output is then compared with pysox output.

Usage

SoxBindings is built to be a drop-in replacement for the sox command line tool, avoiding a costly exec call. Specifically, the way it works is to provide an alternative backend to the excellent library that wraps the command line tool [pysox](https://github.com/rabitt/pysox). SoxBindings simply re-implements the build function in pysox Transformer classes.

Note that Combiner classes in pysox are NOT supported.

If you have a script that works with pysox, like so:

`python import sox # create transformer tfm = sox.Transformer() # trim the audio between 5 and 10.5 seconds. tfm.trim(5, 10.5) # apply compression tfm.compand() # apply a fade in and fade out tfm.fade(fade_in_len=1.0, fade_out_len=0.5) # create an output file. tfm.build_file('path/to/input_audio.wav', 'path/to/output/audio.aiff') # or equivalently using the legacy API tfm.build('path/to/input_audio.wav', 'path/to/output/audio.aiff') # get the output in-memory as a numpy array # by default the sample rate will be the same as the input file array_out = tfm.build_array(input_filepath='path/to/input_audio.wav') # see the applied effects tfm.effects_log > ['trim', 'compand', 'fade'] `

Then, all you have to do is change the import:

`python import soxbindings as sox `

and everything should work, but be faster because of the direct bindings to libsox!

Deploying to PyPI

The Github action workflow “Build wheels” gets run every time there is a commit to master. When it’s done, the wheels for OSX and Linux are created and place in an artifact. For example:

https://github.com/pseeth/soxbindings/actions/runs/169544837

Download the artifact zip, then do the following steps from the root of the soxbindings repo:

`bash unzip [/path/to/artifact.zip] # clear out dist rm -rf dist/ # create source distribution python setup.py sdist cp -r [/path/to/artifact]/* dist/ `

The dist folder should look something like:

` dist ├── soxbindings-0.0.1-cp35-cp35m-macosx_10_9_x86_64.whl ├── soxbindings-0.0.1-cp35-cp35m-manylinux2010_i686.whl ├── soxbindings-0.0.1-cp35-cp35m-manylinux2010_x86_64.whl ├── soxbindings-0.0.1-cp36-cp36m-macosx_10_9_x86_64.whl ├── soxbindings-0.0.1-cp36-cp36m-manylinux2010_i686.whl ├── soxbindings-0.0.1-cp36-cp36m-manylinux2010_x86_64.whl ├── soxbindings-0.0.1-cp37-cp37m-macosx_10_9_x86_64.whl ├── soxbindings-0.0.1-cp37-cp37m-manylinux2010_i686.whl ├── soxbindings-0.0.1-cp37-cp37m-manylinux2010_x86_64.whl ├── soxbindings-0.0.1-cp38-cp38-macosx_10_9_x86_64.whl ├── soxbindings-0.0.1-cp38-cp38-manylinux2010_i686.whl ├── soxbindings-0.0.1-cp38-cp38-manylinux2010_x86_64.whl ├── soxbindings-0.0.1-pp27-pypy_73-macosx_10_9_x86_64.whl ├── soxbindings-0.0.1-pp27-pypy_73-manylinux2010_x86_64.whl ├── soxbindings-0.0.1-pp36-pypy36_pp73-macosx_10_9_x86_64.whl ├── soxbindings-0.0.1-pp36-pypy36_pp73-manylinux2010_x86_64.whl └── soxbindings-0.0.1.tar.gz `

Upload it to the test server first (requires a version bump):

` twine upload --repository testpypi dist/* `

Make sure you can pip install it on both Linux and OSX:

` pip install -U --index-url https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple -U soxbindings `

Use the demo script included in this repo to try it out. Finally, upload it to the regular PyPi server:

` twine upload dist/* `

License

soxbindings is under an MIT license.