arXiv Machine Learning

MemNMF: Memory-Augmented NMF on LPC Spectra for Anomalous Sound Detection

arXiv:2607. 22086v1 Announce Type: cross Abstract: Autoencoder-based anomalous sound detection is attractive for machine condition monitoring because it can be trained using only normal recordings and yields an interpretable anomaly score from reconstruction error.

arXiv AI
Aug 20

Low-Power, Neuromorphic, Acoustic Anomaly Detection for Persistent Machine Monitoring

The paper presents an autoencoder-based acoustic anomaly detection system implemented on Intel’s Loihi 2 neuromorphic processor. It achieves high detection performance—0.9959 AUC on a clean ToyADMOS ToyCar benchmark and 0.7990 source AUC on a noisy DCASE 2026 Task 2 ToyCar benchmark—while operating with only 0.0406–0.0426 mJ of dynamic energy per sample, far below CPU and GPU baselines. The system demonstrates that low‑power, on‑chip inference is feasible for persistent machine monitoring.

By Steven C. Nesbit (Information Sciences, CAI-3, Los Alamos National Laboratory, Los Alamos, USA), Victor M. Vergara (AeroVironment Inc., Albuquerque, USA), Michael A. Felix (University of New Mexico COSMIAC Research Center, Albuquerque, USA), Evan T. Kain (Air Force Research Laboratory, Kirtland AFB, USA), Luis R. Garc\'ia Carrillo (Air Force Research Laboratory, Kirtland AFB, USA), Gerd J. Kunde (Nuclear and Particle Physics and Applications, P-3, Los Alamos National Laboratory, Los Alamos, USA), Andrew T. Sornborger (Information Sciences, CAI-3, Los Alamos National Laboratory, Los Alamos, USA)
arXiv Machine Learning
Aug 18

Prototype-Rectified Iterative Self-supervised Manifold Denoising under Severe Acoustic Shift

arXiv:2608. 15037v1 Announce Type: cross Abstract: Audio-Text Foundation Models (ATMs) fail catastrophically under severe acoustic noise, yet existing adaptation strategies either rely on gradient-based Test-Time Adaptation (TTA), which reinforces noise rather than signal, or on prompt tuning that requires privileged noise annotations unavailable at inference.

By Ashish Anand Shukla, Rini Smita Thakur, Aryan Das, Vinod K. Kurmi