Active Noise Control Scheme for Smart Beds Based on a Wide and Narrow Band Hybrid Control Algorithm

Abstract

The importance of information intelligence in today’s society is growing as a result of advances in science and technology, and as intelligent technology is now a part of almost every aspect of people’s lives, demand for data collection technology is rising. The active noise management of smart beds has proven to be a significant difficulty. Smart beds are a type of intelligent function bed that rely on intelligent sensor technologies to perform real-time monitoring of human health and sleep. The active noise control issue for smart beds is addressed in this study, which also suggests an enhanced broadband-narrowband hybrid control method based on the traditional hybrid control technique. In response to the experimental findings, acoustic feedback cancellation technology increased the stability of the control system, lessened algorithmic calculation difficulties, and more effectively neutralised feedback sound. The maximum steady-state noise reduction in the active noise reduction process is 17.7 dB for the improved wide and narrow band hybrid control algorithm and 13.9 dB for the classical wide and narrow band hybrid control algorithm, according to comparisons between time domain sound pressure and linear total sound pressure level results. After active noise reduction, both techniques can successfully eradicate the narrowband sweeping noise component and have a considerable suppressive effect on the broadband noise component. In comparison to the traditional broadband-narrowband hybrid control method, the revised algorithm has a better effect on noise reduction and has a useful use for intelligent applications.

Keywords

• Active noise control
• wide-and narrow-band hybrid algorithm
• intelligent bed
• adaptive filtering