中图分类号：R318; TN911.7文献标识码：ADOI:10.19339/j.issn.1674-2583.2026.04.002 中文引用格式：李轶凯，肖裴垚，王津梁,等. 面向数字听诊器的心肺音采集与质量增强技术研究进展［J］.集成电路应用，2026，43（4）：5-11. 英文引用格式：Li Yikai, Xiao Peiyao, Wang Jinliang，et al. Research progress on cardiopulmonary sound acquisition and quality enhancement technology for digital stethoscopes［J］.Application of IC，2026，43（4）：5-11.
Research progress on cardiopulmonary sound acquisition and quality enhancement technology for digital stethoscopes
Li Yikai1, Xiao Peiyao1, Wang Jinliang1, Fang Ziyang1, Zhang Fuli1, Zhang Zhi1,2
1. School of Health Science and Engineering, University of Shanghai for Science and Technology; 2. Department of Cardiology , Shanghai General Hospital Affiliated with Shanghai Jiao Tong University School of Medicine
Abstract： Auscultation of cardiopulmonary sounds remains an important bedside method for cardiovascular and respiratory assessment. Conventional acoustic stethoscopes are portable and inexpensive, but their results depend heavily on healthcare professionals′ experience, and the acquired sounds are difficult to preserve, review remotely, or analyze computationally. Digital stethoscopes convert chestwall vibroacoustic signals into electronic signals, enabling amplification, filtering, storage, transmission, and computational analysis. Existing studies indicate that the performance of digital stethoscope applications is not determined solely by downstream classification models. The acquisition chain, device frequency response, chest-wall coupling, noise suppression strategy, and signal quality control jointly determine data usability. This review focuses on cardiopulmonary sound acquisition and quality enhancement technologies for digital stethoscopes. -
Key words : digital stethoscope; cardiopulmonary sound; signal acquisition; quality enhancement; noise suppression; device characterization
