title: [Realization of Heart Sound Envelope Extraction Implemented on LabVIEW Based on Hilbert-Huang Transform].
abstract: We proposed a research of a heart sound envelope extraction system in this paper. The system was implemented on LabVIEW based on the Hilbert-Huang transform (HHT). We firstly used the sound card to collect the heart sound, and then implemented the complete system program of signal acquisition, pretreatment and envelope extraction on LabVIEW based on the theory of HHT. Finally, we used a case to prove that the system could collect heart sound, preprocess and extract the envelope easily. The system was better to retain and show the characteristics of heart sound envelope, and its program and methods were important to other researches, such as those on the vibration and voice, etc.
authors.forename: Zhixiang
authors.initials: Z
authors.lastname: Tan
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Deping
authors.initials: D
authors.lastname: Zeng
authors.forename: Hua
authors.initials: H
authors.lastname: Wang
mesh_terms: D006347:Heart Sounds; D006801:Humans; D012815:Signal Processing, Computer-Assisted