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Journal articles
Redundant wavelet processing on the half-axis with applications to signal denoising with small delays: Theory and experiments
Abstract : A wavelet transform on the negative half real axis is developed using an average-interpolation scheme. This transform is redundant and can be used to perform causal wavelet processing, such as on-line signal denoising, without delay. Nonetheless, in practice some boundary effects occur and thus a small amount of delay is required to reduce them. The effect of this delay is studied using a numerical example of a signal with large noise and sharp transients. It is shown that the delay required to obtain acceptable denoising levels is decreased by using the proposed redundant transform instead of a non-redundant one. We also present results from the experimental implementation of the proposed algorithm for the denoising of a feedback signal during the control of a three-phase permanent-magnet synchronous brushless DC motor.
https://hal-mines-paristech.archives-ouvertes.fr/hal-00501864
Contributor : François Chaplais Connect in order to contact the contributor
Submitted on : Monday, July 12, 2010 - 6:29:14 PM
Last modification on : Wednesday, November 17, 2021 - 12:30:47 PM
Long-term archiving on: : Thursday, October 14, 2010 - 3:36:14 PM
Contributor : François Chaplais Connect in order to contact the contributor
Submitted on : Monday, July 12, 2010 - 6:29:14 PM
Last modification on : Wednesday, November 17, 2021 - 12:30:47 PM
Long-term archiving on: : Thursday, October 14, 2010 - 3:36:14 PM
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RedAvergInterpArticle.pdf
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