You can use Excel to produce sound

As most people know sound is a wave motion. The frequency of middle “C” is 440Hz, this means that at this frequency 440 revolutions are made per second. As one revolution mathematically is 2pi or (2 x (22/7)) then a time scale (x axis) can be built up using these two factors. The amplitude (y-axis) is found from the sin of the value on the x-axis.

An whole octave can be made up using the relationship f = 2^(n/12) x 440 Hz. on an Excel spreadsheet.

And by combining the appropriate notes a chord can be simulated.

  

So sound is made using Excel