If you find that the speaker is too loud for your liking, or you would like there to be no sound at all coming from your dash camera, then you can go into the settings of the dash camera, scroll down until you see the speaker tab.

In these settings, you can adjust the speaker volume to be low/medium/high with another option for it to be turned off.

There are also settings for the dash camera beep to be toggled on and off.