自1816年Laennec听诊心音与肺音以来,历经150多年。心电图虽早已用于临床,但肺音在X线问世后,几无任何重大研究进展。但许多肺疾患,临床单靠X线是不够的。如支气管哮喘患者哮鸣音虽布满两肺,而X线却往往无任何异常发现。近年来随着声学、电子学的迅速发展,国外注意了肺音客观指标的研究,并取得一定进展。 Laennec has been listening to heart sounds and lung sounds since 1816 for more than 150 years. Although the ECG has long been used in clinical, but lung sound after the advent of X-ray, the few without any major research progress. However, many lung diseases, the clinical manifestations by X-ray is not enough. Such as wheeze in patients with bronchial asthma, although covered with both lungs, but often without any X-ray findings. In recent years, with the rapid development of acoustics and electronics, foreign countries have paid attention to the research of objective indicators of lung sound and made some progress.