Computational Lung Sound Analysis
Computational methods for the analysis of lung sounds are beneﬁcial for computer-supported diagnosis, digital storage and monitoring in critical care. Pathological changes of the lung are tightly connected to characteristic sounds enabling a fast and inexpensive diagnosis. Traditional auscultation with a stethoscope has several disadvantages: subjectiveness, i.e. the lung sounds are evaluated depending on the experience of the physician, cannot provide continuous monitoring and a trained expert is required. Furthermore, the characteristics of the sounds are in the low frequency range, where the human hearing has limited sensitivity and is susceptible to noise artifacts.
To facilitate a more objective assessment of the lung sounds for diagnosis of pulmonary diseases/conditions we developed a multi-channel recording device. Furthermore, in a clinical trial we classified adventitious and normal lung sounds using deep neural networks. Currently, we aim to investigate the suitablity of the device for inexpensive screening of COVID-19 infected people.
Our device enables a reliable easy-to-use lung sound recording for non-invasive early detection of lung diseases and allowing for early treatment. The joint treatment of deep learning harmonized with the multi-channel lung sound recording hardware provides a signiﬁcant improvement for computational lung sound analysis.