Evaluating Bluetooth induced sound delay

I'm trying to see how much delay is induced by my bluetooth headphones.

So I'm looking for a way to have a short sound generated when I click a button/hit a key. The standard sound test isn't really usable for this, it is too long and not "sharp" enough at the start.

Any suggestions? Or other solutions?

Running (K)ubuntu 20.04, if that makes a difference.