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Adaptive Differential Denoising for Respiratory Sounds Classification

2025/06/03 by Gaoyang Dong, Zhicheng Zhang, Dong, Gaoyang +5 · 1 citation
Computer Science · Health Professions · Medicine · #Audio and Speech Processing (eess.AS) #FOS: Computer and information sciences #FOS: Electrical engineering #Music and Audio Processing #Noise Effects and Management #Phonocardiography and Auscultation Techniques #Sound (cs.SD) #electronic engineering #information engineering

paper · pdf · doi:10.48550/arxiv.2506.02505

openalex publication_date 2025/06/03 · openalex created_date 2025/10/14 · openalex updated_date 2026/07/28

Abstract

Automated respiratory sound classification faces practical challenges from background noise and insufficient denoising in existing systems. We propose Adaptive Differential Denoising network, that integrates noise suppression and pathological feature preservation via three innovations: 1) Adaptive Frequency Filter with learnable spectral masks and soft shrink to eliminate noise while retaining diagnostic high-frequency components; 2) A Differential Denoise Layer using differential attention to reduce noise-induced variations through augmented sample comparisons; 3) A bias denoising loss jointly optimizing classification and robustness without clean labels. Experiments on the ICBHI2017 dataset show that our method achieves 65.53% of the Score, which is improved by 1.99% over the previous sota method. The code is available in https://github.com/deegy666/ADD-RSC

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