get the audio volume level and display it

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C#5.0

Hello everyone,

is there a way to know if there is any audio comming from any source, which can be "enabled" on my computer whether it is an mp3 , or a youtube video , or a movie...

Baically when we press the volume button on the taskbar in windows, aside of setting the volume level we can see a green sound bar level that keeps moving up and down depending on how high the volume is, so I would like to get this information, for ex if there is no audio then it is equal to zero, otherwise if i play a video on youtube then it will be a variable that is changing with the time.

Many thanks for your help