Enabling Adaptive and Enhanced Acoustic Sensing Using Nonlinear Dynamics
Claudia Lenk, Lars Seeber, Martin Ziegler, Philipp H\"ovel, Stefanie, Gutschmidt

TL;DR
This paper introduces adaptive acoustic sensors utilizing nonlinear dynamics in mechanical oscillators to improve data relevance, dynamic range, and signal quality, facilitating more efficient real-time acoustic data acquisition.
Contribution
It presents a novel approach to adaptive sensing by integrating nonlinear dynamics into mechanical oscillators for enhanced acoustic signal processing.
Findings
Enhanced dynamic range and frequency resolution
Improved signal-to-noise ratio in acoustic sensing
Potential for acquiring only relevant information
Abstract
Transmission of real-time data is strongly increasing due to remote processing of sensor data, among other things. A route to meet this demand is adaptive sensing, in which sensors acquire only relevant information using pre-processing at sensor level. We present here adaptive acoustic sensors based on mechanical oscillators with integrated sensing and actuation. Their dynamics are shifted into a nonlinear regime using feedback or coupling. This enhances dynamic range, frequency resolution and signal-to-noise ratio. Combining tunable sensing properties with sound analysis could enable acquiring of only relevant information rather than extracting this from irrelevant data by post-processing.
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