On 10 January 2013 16:55, Mayes, Kerry <[email protected]> wrote: > Hi all > > I'm looking for some software that will display up to four sine waves > added together. My trouble is I don't really know what search terms to use! > > What I am trying to demonstrate is the difference between > equal temperament and just intonation - two ways of tuning in music. For > example, the note A is generally 440Hz, 880Hz, ... A just tuned 3rd (Db) > is 550Hz whereas the equal tempered 3rd is 554.37Hz (440 * 2^(4/12)). > > So adding the just intonation sinewaves should give a regular looking > pattern whereas the equal tempered will be a bit "messy". > > If anyone knows of anything like this, I'd be keen to hear. >
Assuming you are talking about representing the maths graphically rather than displaying an electrical waveform? Then it's: http://www.gnuplot.info/ otherwise it's http://xoscope.sourceforge.net/ -- Sincerely, Christopher Sawtell
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