Re: Calculus`FourierTransform`
- To: mathgroup@smc.vnet.net
- Subject: [mg11737] Re: Calculus`FourierTransform`
- From: John Biddiscombe <j.biddiscombe.yum.SPAM.yum@rl.ac.uk>
- Date: Thu, 26 Mar 1998 03:09:04 -0500
- Organization: Rutherford Appleton Laboratory
- References: <6emdjm$nno@smc.vnet.net> <6esone$68d@smc.vnet.net>
John Biddiscombe wrote: > Does anyone know of another or a better Fourier Analysis package > publicly available ? I spent some time looking through the mathsource archives on the Wolfram site, and tracked down a signal processing package. It looks pretty good and handles many of the standard constructs much more sensibly than the default Fourier libraries. one tip if you do this Raised cosine....gated by a rectangular pulse rc = (1/2)*(1 + Cos[(2 Pi t)/pulselen]) x=CPulse[pulselen,t+pulselen/2]*Cos[ 2 Pi carrier t] and then fx=CTFTransform[x,t,w] you may wait for years for an answer.... but if you do this x=Simplify[CPulse[pulselen,t+pulselen/2]*Cos[ 2 Pi carrier t]] IE add SIMPLIFY to make it into break-uppable chunks for the rules to get to work on...you get an answer in seconds. John B -- Spam tastes Yummy, but I've had too much lately, please note doctored reply to address.