A BSS Method of Single-channel Signal Based on WPT Layered Technique and Independent Sub-band Functions
Shaobai Zhang · Journal of Nanjing University of Posts and Telecommunications · 2009
Based on wavelet packet transform(WPT) layered technique and independent sub-band functions,the paper presents a new signal processing technique to accomplish blind source separation in a single-channel mixture signal.First,we discuss the single-channel mixed-signal separation model,as well as how to carry on the Layered using WPT,and how to gain the technique of the independent sub-band functions.Then,combining independent sub-wave function into the one-way mixed-signal,one-way mixed-signal conversion can become multi-dimensional vector from one-dimensional vector,in order to achieve its blind source separation.Finally,the separation experiment of heart sounds signal,verifies the efectiveness and feasibility of the propsed method.