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hearing a plot

  • To: mathgroup at
  • Subject: [mg110623] hearing a plot
  • From: Murray Eisenberg <murray at>
  • Date: Tue, 29 Jun 2010 06:58:33 -0400 (EDT)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • Reply-to: murray at

NASA has a free, downloadable program called MathTrax 
( that can plot the graph a 
user-specified, parameterized real-valued function of one real variable, 
or of an equation in two real variables.  So far no big deal. But it 
also let's you "hear" the graph: as a vertical line sweeps across the 
display, the pitch rises as the graph rises and falls as the graph 
falls. You can also use various settings to hear when the value is 
positive vs. negative, or when the graph crosses the axes.

It would be an interesting exercise to reproduce that MathTrax behavior 
in Mathematica.

Murray Eisenberg                     murray at
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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