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Discrete Wavelet Transform Signal Analyzer

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2 Author(s)
Cox, P.H. ; Univ. Fed. de Mato Grosso do Sul, Campo Grande ; de Carvalho, A.A.

This paper addresses the problem of processing biological data, such as cardiac beats in the audio and ultrasonic range, and on calculating wavelet coefficients in real time, with the processor clock running at a frequency of present application-specified integrated circuits and field programmable gate array. The parallel filter architecture for discrete wavelet transform (DWT) has been improved, calculating the wavelet coefficients in real time with hardware reduced up to 60%. The new architecture, which also processes inverse DWT, is implemented with the Radix-2 or the Booth-Wallace constant multipliers. One integrated circuit signal analyzer in the ultrasonic range, including series memory register banks, is presented.

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:56 ,  Issue: 5 )

Date of Publication:

Oct. 2007

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