Development of a signal collecting system for double-channel auscultationReport as inadecuate

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As is known to all, many auscultations of human body, such as heart, lung and carotid artery sound, play a major role in clinic. And their signal frequency is in the range that computer sound card can handle, so we can use analog-to-digital A-D conversion of sound card as A-D conversion ADC of auscultation signals, and double-channel auscultation signals DCASs can be input into personal computerPC by sound card that every computer has, and it makes the hardware design more simple. Because auscultation signals are input from sound card, any common music processing software CMPS can be used to process received auscultative signals, and it is not necessary to write special processing software for them. Therefore, only a double-channel and front-end analog signal processing circuit of auscultation is needed to be designed. By this method of constituting the signal collecting system for double-channel auscultation, it is simple and low cost, and needs no special software, so it has very important values and a broad market prospect.


Auscultation Signal; Sound Card; Music Processing Software; Analog Signal Processing Circuit

Cite this paper

Jiang, Q. , Liu, G. , Hu, N. , Gao, B. , Chen, P. , Hu, G. and Chen, L. 2013 Development of a signal collecting system for double-channel auscultation. Journal of Biomedical Science and Engineering, 6, 712-716. doi: 10.4236-jbise.2013.67087.

Author: Qifeng Jiang, Gaiqin Liu, Nan Hu, Bin Gao, Ping Chen, Guohu Hu, Longcong Chen



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