title: [A study on the four modes for transmitting heart sound signal].
abstract: 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.
authors.affiliation: College of Bioengineering, Chongqing University, Chongqing 400030, China.
authors.forename: Chengwen
authors.initials: C
authors.lastname: Zhou
authors.forename: Xingming
authors.initials: X
authors.lastname: Guo
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.forename: Huijie
authors.initials: H
authors.lastname: Lin
authors.forename: An
authors.initials: A
authors.lastname: Ji
authors.forename: Ming
authors.initials: M
authors.lastname: Ke
authors.forename: Shouzhong
authors.initials: S
authors.lastname: Xiao
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Zheng
mesh_terms: 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*