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

fYear

2007

fDate

22-26 Aug. 2007

Firstpage

1850

Lastpage

1854

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE

Conference_Location

Lyon

ISSN

1557-170X

Print_ISBN

978-1-4244-0787-3

Type

conf

DOI

10.1109/IEMBS.2007.4352675

Filename

4352675