Wootaek Lim

HE-NAC: High-Efficiency Neural Audio Coding Via Hierarchical and Residual Multi-Band Quantization

High-fidelity audio coding requires faithful reconstruction of perceptually important high-frequency components, which are often lost due to the aggressive temporal decimation and quantization of neural codecs. State-of-the-art neural audio coding methods rely on adversarial learning to hallucinate these missing compon...