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

**References**:**chirp function***From:*Will Robertson <wspr81@gmail.com>