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Time Domain Signal Analysis Using Modified Haar and Modified Daubechies Wavelet Transform

Author(s): Daljeet Kaur Khanduja | M.Y.Gokhale

Journal: Signal Processing : An International Journal
ISSN 1985-2339

Volume: 4;
Issue: 3;
Start page: 161;
Date: 2010;
Original page

Keywords: modified Haar | modified Daubechies | analysis

In this paper, time signal analysis and synthesis based on modified Haar and modified Daubechies wavelet transform is proposed. The optimal results for both analysis and synthesis for time domain signals were obtained with the use of the modified Haar and modified Daubechies wavelet transforms. This paper evaluates the quality of filtering using the modified Haar and modified Daubechies wavelet transform. Analysis and synthesis of the time signals is performed for 10 samples and the signal to noise ratio (SNR) of around 25-40 dB is obtained for modified Haar and 24-32 dB for modified Daubechies wavelet. We have observed that as compared to standard Haar and standard Daubechies mother wavelet our proposed method gives better signal quality, which is good for time varying signals.
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