Synth

Synth is one of the buttons accessible in the user interface that allows one to change the appearance and sound of Multiplayer Piano. It can be toggled on or off through the "ON/OFF" button:

There are four dials which influence the sound:

mix: The default is set to 50.0%. This dial determines what percentage of sound is dominated by the synth component as opposed to the piano setting component.
osc1 attack: The default is set to 0.000s.
osc1 delay: The default is set to 0.200s.
osc1 sustain: The default is set to 0.500x.
osc1 release: The default is set to 2.000s.

And a button which can be changed to square, triangle, sawtooth, and sine.

Combinatorics

The synth settings allow for a vast range of possible sound fonts. The mix dial has 1001 possible values, osc1 attack another 1001 values, osc1 delay another 2001 values, osc1 sustain another 1001 values, and osc1 release another 2001 values. There are also 8 select sound fonts and four synth fonts for a total of 4 x 8 x 10013 x 20012 = Template:Hover maximum possible sound fonts.

Of course, that is an upper bound. If the mix is set to 100.0% for instance, then what sound select option you choose is irrelevant.