Music source separation is the task of isolating individual instruments which are mixed in a musical piece. This task is particularly challenging, and even state-of-the-art models can hardly generalize to unseen test data.
Nevertheless, prior knowledge about individual sources can be used to better adapt a generic source separation model to the observed signal.
In this work, we propose to exploit a temporal segmentation provided by the user, that indicates when each instrument is active, in order to fine-tune a pre-trained deep model for source separation and adapt it to one specific mixture. This paradigm can be referred to as user-guided one-shot deep model adaptation for music source separation, as the adaptation acts on the target song instance only.
The adaptation is made possible thanks to a proposed loss function which aims to minimize the energy of the silent sources while at the same time forcing the perfect reconstruction of the mixture.
Our results are promising and show that state-of-the-art source separation models have large margins of improvement especially for those instruments which are underrepresented in the training data. Below you can find some audio examples from the MUSDB18 test set.