Lakhe Aparna, Sodhi Isha, Warrier Jyothi, Sinha Vineet
a Department of Biomedical Engineering , MGM College of Engineering and Technology , Navi Mumbai , India ;
b Electronic division , Bhabha Atomic Research Centre , Mumbai , India.
J Med Eng Technol. 2016;40(1):20-4. doi: 10.3109/03091902.2015.1116633. Epub 2016 Jan 5.
The stethoscope is a medical acoustic device which is used to auscultate internal body sounds, mainly the heart and lungs. A digital stethoscope overcomes the limitations of a conventional stethoscope as the sound data is transformed into electrical signals which can be amplified, stored, replayed and, more importantly, sent for an expert opinion, making it very useful in telemedicine. With the above in view, a low cost digital stethoscope has been developed which is interfaceble with mobile communication devices. In this instrument sounds from various locations can be captured with the help of an electret condenser microphone. Captured sound is filtered, amplified and processed digitally using an adaptive line enhancement technique to obtain audible and distinct heart sounds.
听诊器是一种医学声学设备，用于听诊身体内部的声音，主要是心脏和肺部的声音。数字听诊器克服了传统听诊器的局限性，因为声音数据被转换为电信号，这些电信号可以被放大、存储、重放，更重要的是，可以发送给专家进行诊断，这使得它在远程医疗中非常有用。基于上述考虑，已经开发出一种低成本的数字听诊器，它可以与移动通信设备连接。在这个仪器中，借助驻极体电容传声器可以捕捉来自不同位置的声音。捕捉到的声音通过自适应线增强技术进行滤波、放大和数字处理，以获得清晰可闻的心脏声音。
