Analysis on the Influence of Synchronization Error on Fixed-filter Active Noise Control

TL;DR

This paper investigates how synchronization errors affect the performance of fixed-filter active noise control systems, aiming to understand their stability and noise reduction capabilities in practical applications.

Contribution

It provides a theoretical analysis of synchronization error impacts on fixed-filter ANC systems, addressing stability and effectiveness trade-offs.

Findings

Synchronization errors influence ANC system stability.

Fixed-filter approach offers a computationally simpler alternative.

Trade-offs exist between noise reduction and system stability.

Abstract

The efficacy of active noise control technology in mitigating urban noise, particularly in relation to low-frequency components, has been well-established. In the realm of traditional academic research, adaptive algorithms, such as the filtered reference least mean square method, are extensively employed to achieve real-time noise reduction in many applications. Nevertheless, the utilization of this technology in commercial goods is often hindered by its significant computing complexity and inherent instability. In this particular scenario, the adoption of the fixed-filter strategy emerges as a viable alternative for addressing these challenges, albeit with a potential trade-off in terms of noise reduction efficacy. This work aims to conduct a theoretical investigation into the synchronization error of the digital Active Noise Control (ANC) system. Keywords: Fixed-filter, Active noise control, Multichannel active noise control.