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has been cited by the following article:

• TITLE: Development of a signal collecting system for double-channel auscultation

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

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

  JOURNAL NAME: Journal of Biomedical Science and Engineering, Vol.6 No.7, July 10, 2013

  ABSTRACT: 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 computer(PC) 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.