Title :
An analogue bandpass filter realisation of the Continuous Wavelet Transform
Author :
Casson, A.J. ; Yates, D.C. ; Patel, Surabhi ; Rodriguez-Villegas, Esther
Author_Institution :
Imperial Coll. London, London
Abstract :
The Continuous Wavelet Transform (CWT) is a highly useful signal processing technique for which low power implementations are desirable, for example to allow the transform to be used in battery powered, portable devices. This paper describes a Low Power CWT (LPCWT) implementation that is based around the mathematical approximation of a mother wavelet and uses application specific information to guide the approximation process. Simulations comparing the LPCWT and CWT are carried out with the two giving equivalent signal processing performance. The LPCWT is suitable for realisation in any desired circuit topology.
Keywords :
band-pass filters; medical signal processing; wavelet transforms; LPCWT; analogue bandpass filter; circuit topology; continuous wavelet transform; mathematical approximation; portable device; signal processing technique; Band pass filters; Circuits; Continuous wavelet transforms; Energy consumption; Epilepsy; Frequency; Shape; Signal processing algorithms; Transfer functions; Wavelet transforms; Algorithms; Computer Simulation; Computers; Diagnosis, Computer-Assisted; Electric Power Supplies; Electronics, Medical; Epilepsy; Equipment Design; Humans; Models, Statistical; Models, Theoretical; Sensitivity and Specificity; Signal Processing, Computer-Assisted; Software; Time Factors;
Conference_Titel :
Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE
Conference_Location :
Lyon
Print_ISBN :
978-1-4244-0787-3
DOI :
10.1109/IEMBS.2007.4352675
