[adrian_b]

Professionals have instruments that measure the precise period of the clock ticks that are heard, so the adjustment lever can be set accurately immediately.

With a computer (or with a smartphone), one could easily improvise an equivalent instrument, by recording the ticks with the microphone and displaying the tick period during adjustment.

[dmitrygr]

Atmos does not tick, nor make any audible noise

[stereo]

There’s even a few phone apps that do that