Dequantization of a signal from two parallel quantized observations

TL;DR

This paper introduces a dequantization method that combines two differently quantized observations to reconstruct signals with higher fidelity than using either device alone, leveraging sparsity regularization.

Contribution

The paper presents a novel approach that integrates two sampling devices with different rates and quantization levels for improved signal reconstruction.

Findings

Outperforms existing methods in objective tests

Achieves higher reconstruction quality with combined sampling

Demonstrates superiority in subjective evaluations

Abstract

We propose a technique of signal acquisition using a combination of two devices with different sampling rates and quantization accuracies. Subsequent processing involving sparsity regularization enables us to reconstruct the signal at such a sampling frequency and with such a bit depth that was not possible using the two devices independently. Objective and subjective tests show the superiority of the proposed method in comparison with alternatives.