It sounded like this:
Like the first couple seconds of the vid.
I swear this isn't a troll post.
I was actually watching a video with just a guy talking when it happened and I thought it was a sound effect in the video but nah...
I replayed it and there's no such sound in the video.
It did sound like it came out of the computer but there's nothing it could have been. No other vids or any other type of audio stuff open, no notifications enabled on this computer, nothing like that. At all.
It was NOT a natural environment sound either... no way.
It sounded like a space game sound effect or something.
Like in the first 1 second of that video.
Whatever that sound is... like a synthesizer I guess.
Not the phone either, it's on DND inside a Faraday pouch.
And just BTW...
I have this badass custom pouch I sewed together for the phone, lmao...
Whenever I pull it out, people are like "OMG what is that?!" and they compliment me on it and get disappointed when I say I made it myself and therefore they can't buy it anywhere, bwahahaha!