About the dataset
LibriMix is an open source dataset for source separation in noisy environments. It is derived from LibriSpeech signals (clean subset) and WHAM noise. It offers a free alternative to the WHAM dataset and complements it. It will also enable cross-dataset experiments.
Generating LibriMix
To generate LibriMix, clone the repo and run the main script :
generate_librimix.sh
git clone https://github.com/JorisCos/LibriMix
cd LibriMix
./generate_librimix.sh storage_dir
You can either change storage_dir and n_src by hand in
the script or use the command line.
By default, LibriMix will be generated for 2 and 3 speakers,
at both 16Khz and 8kHz,
for min max modes, and all mixture types will be saved (mix_clean,
mix_both and mix_single). This represents around 430GB
of data for Libri2Mix and 332GB for Libri3Mix.
You will also need to store LibriSpeech and wham_noise_augmented during
generation for an additional 30GB and 50GB.
Please refer to
this section if you want to generate less data.
You will also find a detailed storage usage description in each metadata folder.
Features
In LibriMix you can choose :
- The number of sources in the mixtures.
- The sample rate of the dataset from 16 KHz to any frequency below.
- The mode of mixtures : min (the mixture ends when the shortest source ends) or max (the mixtures ends with the longest source)
- The type of mixture : mix_clean (utterances only) mix_both (utterances + noise) mix_single (1 utterance + noise)
You can customize the generation by editing generate_librimix.sh.
Note on scripts
For the sake of transparency, we have released the metadata generation scripts. However, we wish to avoid any changes to the dataset, especially to the test subset that shouldn't be changed under any circumstance.