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Discrete wavelet transform signal Analyzer
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DOI：10.1109/TIM.2007.894797.png)
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Abstract
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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.
Keywords:
asynchronous logic circuits
digital filters
digital signal processors
last in last out memory
logic design
sequential machines
signal analysis and synthesis
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