以前的研究表明:冠状动脉狭窄病人由于在管腔中血液的混乱流动将会产生声音,对于这些信号进行的测试构成了我们对于冠状动脉疾病进行探查时非侵入式近似的实验基础。正是在心舒张期内冠状动脉血流达到最大,因此与通过部分闭合冠状动脉的混乱的血液流动相联系的声响在此时也达到最大。由病人床边记录采出的被分离后的舒张期心音,在自适应线性增强后(Adqptive Linc Enhancement-ALE),使用一个自回归(AR)和自回归运 Previous studies have shown that patients with coronary artery stenosis will produce sound due to turbulent flow of blood in the lumen and testing of these signals constitutes the experimental basis for our non-invasive approximation when probing coronary artery disease. It is during coronary diastolic coronary flow to reach the maximum, so with the partial closure of the coronary artery by the chaotic blood flow associated with the sound at this time also reached its maximum. Isolated diastolic heart sounds taken from patient bedside recordings were recorded using an autoregressive (AR) and autoregressive