Filtering method for using DFT ideal filter to digital signal
The invention relates to digital signal processing, particularly filtering of digital signal by DFT ideal filter, including the steps of applying the Hilbert transformation in original signal trace, calculating instantaneous envelope, calculating phase function, filtering the phase function with DFT...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
20.08.2008
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to digital signal processing, particularly filtering of digital signal by DFT ideal filter, including the steps of applying the Hilbert transformation in original signal trace, calculating instantaneous envelope, calculating phase function, filtering the phase function with DFT ideal filter and last calculating output function. The use of the invention for digital signal filtering field improves the filtering performance without substantially Gibbs effect. |
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Bibliography: | Application Number: CN2007163948 |