How to know the volume of the output signal?

Question

Audio

There are programs that allow you to find out the volume of the output signal on the audio card in db in real time?

Answer 1

In pavucontrol Linux (practically on all distributions where PulseAudio is used), in Windows - such functionality comes with drivers, but only in very few. As far as I remember, it is possible to write a program quite simple for these purposes using directx. But even more, I'm sure that these programs are a huge bunch, you just have to google for 5 minutes on this topic. I won't do it for you, sorry.