Toward Fully Self-Supervised Multi-Pitch Estimation

• URL: http://arxiv.org/abs/2402.15569v1
• Date: Fri, 23 Feb 2024 19:12:41 GMT
• Title: Toward Fully Self-Supervised Multi-Pitch Estimation
• Authors: Frank Cwitkowitz and Zhiyao Duan
• Abstract summary: We present a suite of self-supervised learning objectives for multi-pitch estimation. These objectives are sufficient to train an entirely convolutional autoencoder to produce multi-pitch salience-grams directly. Our fully self-supervised framework generalizes to polyphonic music mixtures, and achieves performance comparable to supervised models trained on conventional multi-pitch datasets.
• Score: 21.000057864087164
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Multi-pitch estimation is a decades-long research problem involving the detection of pitch activity associated with concurrent musical events within multi-instrument mixtures. Supervised learning techniques have demonstrated solid performance on more narrow characterizations of the task, but suffer from limitations concerning the shortage of large-scale and diverse polyphonic music datasets with multi-pitch annotations. We present a suite of self-supervised learning objectives for multi-pitch estimation, which encourage the concentration of support around harmonics, invariance to timbral transformations, and equivariance to geometric transformations. These objectives are sufficient to train an entirely convolutional autoencoder to produce multi-pitch salience-grams directly, without any fine-tuning. Despite training exclusively on a collection of synthetic single-note audio samples, our fully self-supervised framework generalizes to polyphonic music mixtures, and achieves performance comparable to supervised models trained on conventional multi-pitch datasets.

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