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北京铁路总医院心血管组专业医师与中国科学院声学所科技人员从五百多名患者的心音中筛选出典型心音60余种制成心音磁带。由于采用先进的电听诊器直接录制,并对各类杂音
Among the more than 500 patients’ heart sounds, the cardiovascular specialists of the Beijing Railway General Hospital and the scientists of the Institute of Acoustics of the Chinese Academy of Sciences screened out more than 60 kinds of heart sounds made from typical heart sounds. Due to the use of advanced electronic stethoscopes for direct recording and various types of noise