Klimczak J C, Knowles M J, Hahn A W
Department of Veterinary Medicine, University of Missouri, Columbia 65211, USA.
Biomed Sci Instrum. 1995;31:103-8.
We have developed a system whereby heart sounds and accompanying electrocardiogram may be recorded in digital format, stored as files and transmitted as any other digital file. The present system is implemented on a Macintosh System 7.1 platform, but will run under System 7.0 to System 7.5. The code is written in object oriented C++. The data are presently taken using a standard heart sound microphone and ECG amplifier. The data collection program stores the sampled channels as 16 bit words. Each channel is sampled at 2 kb/s for periods of time ranging from 10 to 30 seconds. Our program then reads the file, displays it under a viewer and allows for high fidelity reproduction of the sounds.
我们开发了一种系统，通过该系统可以将心音和伴随的心电图以数字格式记录下来，作为文件存储，并像任何其他数字文件一样进行传输。当前系统是在Macintosh System 7.1平台上实现的，但也可以在System 7.0到System 7.5下运行。代码是用面向对象的C++编写的。目前数据是使用标准的心音麦克风和心电图放大器采集的。数据采集程序将采样通道存储为16位字。每个通道以2 kb/s的速率采样，采样时间为10到30秒。然后我们的程序读取文件，在查看器下显示它，并允许对声音进行高保真再现。
