Eli5: How does the speed at which I press a key in a digital piano changes the sound volume?

Question

In regular pianos I think that there is a hammer that strikes the strings, but how does it work in a digital keyboard?

In: Technology

Answer 1

There are pressure sensitive switches under or behind the keys. The feedback from these switches tells the processor to play back the piano sound at a quieter volume. Most will actually play back a different recording, as the timbre of a gently pressed key is slightly different.