Sound on by default - WebAR

Hi - I have several videos in my WebAR experience that are hosted on aws s3 and being streamed into the experience. They play and sound fine. Well, you can hear the sound when you tap on the speaker icon in the zappar toolbar.

However, I would like to turn off the toolbar so it doesn’t take up real estate and have the sound on by default. So for example, a new user activates the experience and the sound is on by default.

Is this possible?