Re: Digital Filters
- To: mathgroup at smc.vnet.net
- Subject: [mg27261] Re: Digital Filters
- From: vze295bp at verizon.net (David Reiss)
- Date: Wed, 14 Feb 2001 03:41:28 -0500 (EST)
- Organization: Scientific Arts
- References: <96aslc$6fo@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
In article <96aslc$6fo at smc.vnet.net>, "Lemiel Maya" <lemiel at nomade.fr> wrote: > I am interested in using MATHEMATICA to design digital filters via the > window method (hamming, Hanning). Can anybody out there give me an idea of > how to go about designing a simple lowpass filter. > Your help will be appreciated Here is an example of using a low pass filter to "denoise" some data: http://www.scientificarts.com/sunspotanalysis/sunspotanalysis.html You might use this as a starting point for the use of the ListConvolve function in the construction of more involved linear filters. Note also that ListConvolve can be used in a much more generalized way to implement nonlinear filters as well. --David -- ) Scientific Arts: http://www.scientificarts.com ) Creative Services and Consultation for the Applied ) and Pure Sciences:: David Reiss: dreiss at !SPAMscientificarts.com ) [Remove the !SPAM to send email]