Itakura-Saito nonnegative matrix factorization with group sparsity : complete results

Acknowledgements

We wish to thank artists AlexQ and Shannon Hurley, for providing source tracks of their compositions ). They are available on the Internet Archive and the ccmixter website, and licensed under the Creative Commons Non-Commercial License

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We experiment our algrithm on two tracks :

• "We Are In Love" by Shannon Hurley
• "Sunrise" by Shannon Hurley

The sources were available, from which we took 20-30 seconds excerpts. We partially muted each source to control the proportion p of overlap, as illustrated below :

We compare our algorithm (GIS-NMF) with :

• baseline : compute Itakura-Saito NMF and permute the components to obtain the lowest value of Ψ(H).
• Ideal NMF : compute Itakura-Saito NMF and permute the components to obtain the highest SDR values. This requires knowing the ground truth !
• Random Mask : the average performance of 10 random binary masks.

Click on items in the table below to listen to the audio files !