Wavelet Transform

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Article #1315

#1315

From: c8827148
Date: Sun, 04 Oct 1992 03:37

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I am currently studying the Discrete Wavelet Transform implemented in the
manner similar to the one described in Dr Dobbs Journal earlier this year. 
The FIR filters I am using are of my own design, giving much better 
reconstruction of the signal. 

My problem is that on a sampled sine wave input, I'm getting an
amplitude modulation effect on the reconstructed signal. The modulation
frequency itself seems to depend on the frequency of the input sine wave.

Has anybody else noticed this effect? What is the cause?

Thanks in advance,

Erik de Castro Lopo,
University of Newcastle,
Australia.

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From: c8827148@cc.newcastle.edu.au
Subject: Wavelet Transform
Message-ID: <1992Oct4.133737.1@cc.newcastle.edu.au>
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Organization: University of Newcastle, AUSTRALIA
Date: Sun, 4 Oct 1992 03:37:37 GMT