http://www.suddensound.com/um/monochord/

Pues eso… que un poco más cerca de Pitágoras y algo más lejos de Bach…

«create a scale – In this section you choose the pitches for your scales. Start by choosing a base frequency; the default, 440, is a standard middle «A». Then specify a scale […] Each pitch can be specified by a ratio, eg. 3:2, a floating point number with a decimal point, eg. 1.498 […]

create a score – in this section you choose which notes from your scale you want to hear. You do this by entering a series of notes in the score field, where each note is represented by the scale degree, that is, the number of that pitch in your scale […]

choose an instrument – in this section you choose an instrument (or timbre) to play your score

generate the audio – go!».

via: oddmusic