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NU-GAN: High resolution neural upsampling with GAN

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arxiv 2010.11362 v1 pith:FXIGYZJL submitted 2020-10-22 cs.SD cs.AIcs.CLcs.LGeess.AS

classification cs.SDcs.AIcs.CLcs.LGeess.AS
keywords audionu-ganupsamplinghigherresolutionchancedatasethigh
verification ladder T0 review T1 audit T2 compute T3 formal
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In this paper, we propose NU-GAN, a new method for resampling audio from lower to higher sampling rates (upsampling). Audio upsampling is an important problem since productionizing generative speech technology requires operating at high sampling rates. Such applications use audio at a resolution of 44.1 kHz or 48 kHz, whereas current speech synthesis methods are equipped to handle a maximum of 24 kHz resolution. NU-GAN takes a leap towards solving audio upsampling as a separate component in the text-to-speech (TTS) pipeline by leveraging techniques for audio generation using GANs. ABX preference tests indicate that our NU-GAN resampler is capable of resampling 22 kHz to 44.1 kHz audio that is distinguishable from original audio only 7.4% higher than random chance for single speaker dataset, and 10.8% higher than chance for multi-speaker dataset.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. GenSE: Generative Speech Enhancement via Language Models using Hierarchical Modeling

    eess.AS 2025-02 conditional novelty 6.0 of 10

    GenSE enhances speech by first denoising semantic tokens with a language model and then generating acoustic tokens from a single-quantizer codec, reporting higher DNSMOS, speaker similarity, and lower WER than prior systems.

  2. A High-Fidelity Speech Super Resolution Network using a Complex Global Attention Module with Spectro-Temporal Loss

    cs.SD 2025-06 reject novelty 5.0 of 10

    CTFT-Net jointly reconstructs magnitude and phase for speech bandwidth extension and reports lower log-spectral distance than NU-Wave, WSRGlow, NVSR, and AERO, but its own tables and core equation contain inconsistencies.

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