Acoustic Noise refers to unwanted sound produced by environmental, mechanical, or electronic sources that interferes with useful signals. In advanced sensing and communication, acoustic noise can reduce accuracy, obscure anomalies, and complicate monitoring. NECLA researchers work on distributed acoustic sensing and fiber-optic communication, developing noise-filtering algorithms and modeling techniques that enhance precision in vibration detection, seismic monitoring, perimeter security, and infrastructure health diagnostics.
We investigate the growth rate of phase power spectral density in fiber spools in the presence of ambient acoustic noise, observing a complex interplay between spool geometry, shielding effects, and phase cancellation at high acoustic frequencies.
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NEC Laboratories America, Inc. (NEC Labs) is the US-based center for NEC Corporation’s global network of corporate research laboratories. Our diverse research groups collaborate with industry, academia and governments to provide disruptive solutions to complex problems. A leader in the integration of IT and network technologies with more than 100 years of expertise, NEC provides a combination of products and solutions that cross-utilize the company’s experience and global resources to meet the complex and ever-changing needs of its customers.