How do I silence a notification sound on Pixel 3?

[dharper46]

I have customized long notification sounds (10-15 Seconds), because I work in a noisy environment. But when I am not at work, I cannot find a way to silence the notification sound, other than to muffle the phone in my pocket or next to my body. On my iPhone it was as simple as pressing to power button once to silence.
Does anyone know how to quickly stop a notification sound? Thanks.

 

[HyperM3]

Are you trying to silence one notification or all? Are you trying to silence it as its coming in or before it comes in?

 

[dharper46]

I am trying to instantly silence any notification, as it is going off. Thanks