Title :
A method based on wavelet transform to reduce 1/f noise
Author :
Zhou, Guiheng ; Jiang, Shiqin ; Yang, Fan ; Yu, Xiaoping
Author_Institution :
Dept. of Inf. & Control Eng., Tongji Univ., Shanghai
Abstract :
In this paper a method for reducing white noise and 1/f noise is investigated. Instead of modifying the hardware design of SQUID detector, we seek to reduce 1/f noise by the wavelet transform approach, which statistical characteristics in the wavelet domain are used. By applying this method to the simulated noise MCG-signal, we demonstrate that both the white noise and the 1/f noise can be significantly reduced
Keywords :
magnetocardiography; medical signal processing; signal denoising; statistical analysis; wavelet transforms; white noise; 1/f noise reduction; MCG; SQUID detector; statistical characteristics; wavelet transform; white noise reduction; Detectors; Hardware; Low-frequency noise; Magnetic noise; Noise reduction; Reactive power; SQUIDs; Superconducting device noise; Wavelet transforms; White noise; 1/f noise; MCG-signals; SQUID; wavelet transform; white noise;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1615839
