By decomposing spectrogram reconstruction into a fixed pseudo-inverse range-space step and a learned null-space detail step, RNDVoC reaches near-BigVGAN quality with about 3% of the parameters and a 10x CPU speed-up.
APNet: An all-frame-level neural vocoder incorporating direct prediction of amplitude and phase spectra.IEEE/ACM Trans
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Learning Neural Vocoder from Range-Null Space Decomposition
By decomposing spectrogram reconstruction into a fixed pseudo-inverse range-space step and a learned null-space detail step, RNDVoC reaches near-BigVGAN quality with about 3% of the parameters and a 10x CPU speed-up.