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MathGroup Archive 2007

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Re: chirp function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg81084] Re: [mg81069] chirp function
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Tue, 11 Sep 2007 05:23:21 -0400 (EDT)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <200709102254.SAA14687@smc.vnet.net>
  • Reply-to: murray at math.umass.edu

"Chirp" is unknown to Mathematica. ???

There is Beep[] in Mathematica 6.  (And about time!)

Will Robertson wrote:
> Hello,
> 
> It surprised me that there isn't a chirp signal in mathematica. Here's
> one:
> 
> LinearChirp[time t, frequency gradient kf]
> 	returns the linear chirp output at time t with frequency increase per
> second kf
> LinearChirp[time t, initial frequency f0, final time t1, final
> frequency f1]
> 	returns the linear chirp output at time t with initial frequency f0
> and frequency f1 at time t1
> 
> LinearChirp[t_, fi_, tf_, ff_] := Sin[2 \[Pi] t (fi + (ff - fi)/tf t/
> 2)]
> LinearChirp[t_, kf_] := Chirp[t, 0, 1, kf]
> 
> Hope this helps,
> Will
> 
> 

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


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