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arXiv · 2104.02321

NU-Wave: A Diffusion Probabilistic Model for Neural Audio Upsampling

Junhyeok Lee·Seungu Han
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Abstract

In this work, we introduce NU-Wave, the first neural audio upsampling model to produce waveforms of sampling rate 48kHz from coarse 16kHz or 24kHz inputs, while prior works could generate only up to 16kHz. NU-Wave is the first diffusion probabilistic model for audio super-resolution which is engineered based on neural vocoders. NU-Wave generates high-quality audio that achieves high performance in terms of signal-to-noise ratio (SNR), log-spectral distance (LSD), and accuracy of the ABX test. In all cases, NU-Wave outperforms the baseline models despite the substantially smaller model capacity (3.0M parameters) than baselines (5.4-21%). The audio samples of our model are available at https://mindslab-ai.github.io/nuwave, and the code will be made available soon.

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BibTeXRIS

Junhyeok Lee, Seungu Han. 2021-04-06. NU-Wave: A Diffusion Probabilistic Model for Neural Audio Upsampling. https://doi.org/10.21437/interspeech.2021-36

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