Title :
A de-noising method for heart sound signal using Otsu´s threshold selection
Author :
Haoyu Chen ; Gururajan, R.
Author_Institution :
Sch. of Inf. Syst., Univ. of Southern Queensland, Toowoomba, QLD, Australia
Abstract :
In this research, Otsu´s method methods is quoted and applied to de-noise heart sounds so that unwanted noises can be separated from a combined set of noises extracted through an electronic stethoscope. The noise was analyzed by applying a random but suitable threshold section method, the unwanted noise was reduced and the useful sound was reconstructed. The initial result shows that the method applied is effective and the reconstructed signal appears to be providing a better quality of heart sound.
Keywords :
acoustic signal processing; bioacoustics; cardiology; medical signal processing; patient diagnosis; signal denoising; signal reconstruction; Otsu threshold selection; electronic stethoscope; heart sound quality; heart sound signal; noise analysis; noise reduction; random threshold section method; signal de-noising method; signal reconstruction; sound reconstruction; de-noising; heart sound signal; threshold function;
Conference_Titel :
Wireless Mobile and Computing (CCWMC 2011), IET International Communication Conference on
Conference_Location :
Shanghai
DOI :
10.1049/cp.2011.0848
