[A study on the four modes for transmitting heart sound signal].
As an important human body sound signal, heart sound is of great value in the researches on diagnostics of heart diseases. This study sought to explore the methods of transmitting heart sound through the telephone correspondence system for simultaneous telemetering cardiac contractility and heart rate. Heart sounds were transmitted from a phone to another phone with 4 modes, the wirelessly transmitted distance between the two phones being 5 m, 10 km, and 1000 km, respectively. The results of experiments show that telemetering cardiac contractility and heart rate can be realized by the telephone correspondence system. Such methods have the advantages of being noninvasive, inexpensive, rapid and convenient; moreover, they can be used repeatedly and be available for in-home use.
Zhou
Chengwen
C
College of Bioengineering, Chongqing University, Chongqing 400030, China.
Guo
Xingming
X
Wang
Dong
D
Lin
Huijie
H
Ji
An
A
Ke
Ming
M
Xiao
Shouzhong
S
Zheng
Xiaolin
X
D006347:Heart Sounds / Q000502:physiology*; D006801:Humans; D010701:Phonocardiography / Q000295:instrumentation / Q000379:methods; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D017216:Telemedicine / Q000379:methods; D013686:Telemetry / Q000379:methods*