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.
Highlights
Traditional stethoscope, as you know, is still and widely used in clinic because auscultation, a kind of diagnostic method, plays a major role in clinic [1] and medical teaching [2,3,4,5,6]
As is known to all, many auscultations of human body, such as heart, lung and carotid artery sound, play a major role in clinic. 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
Summary
Traditional stethoscope, as you know, is still and widely used in clinic because auscultation, a kind of diagnostic method, plays a major role in clinic [1] and medical teaching [2,3,4,5,6]. Ments, which base on multimedia technology, are appearing, and they avoid the subjectivity of ordinary auscultation instrument in a certain extent, and can make quantitative analysis Their functions are singleness and their price is high, and we cannot get auscultation of two parts simultaneously by them. In clinical, double-channel simultaneous auscultation has important clinical values, especially for some symmetrical parts, such as carotid artery and lung Their signal frequency is in the range that sound card of computer can handle, so we can use ADC of the sound card as the ADC of auscultative signals. A doublechannel auscultation analysis system can be made by using only one signal collector and CMPS This system has many advantages, such as powerful function, low cost, easy use, and a broad market prospect. It can be used at home as well as clinic and medical education
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