Audio dequantization using instantaneous frequency
Audio and Speech Processing
2026-01-26 v2
Abstract
We present a dequantization method that employs a phase-aware regularizer, originally successfully applied in an audio inpainting problem. The method promotes a temporal continuity of sinusoidal components in time-frequency representation of the audio signal, and avoids energy loss artifacts commonly encountered with l1-based regularization approaches. The proposed method is called the Phase-Aware Audio Dequantizer (PHADQ). The method are evaluated against the state-of-the-art using the SDR and PEMO-Q ODG objective metrics, and a~subjective MUSHRA-like test.
Cite
@article{arxiv.2510.16813,
title = {Audio dequantization using instantaneous frequency},
author = {Vojtěch Kovanda and Pavel Rajmic},
journal= {arXiv preprint arXiv:2510.16813},
year = {2026}
}