The number of times I've been mid video call or watching a video on my headphones and they randomly decided to disconnect from my laptop and connect to another device like my phone absolutely infuriates me.
The whole multiple paired device feature really needs some work...
It might be your phone getting a notification, and sending that to the BT speaker, which then takes precedent over the laptop
I usually just disable BT on my phone when stuff like that happens (on android, you can change the playback device without disconnecting, and that should also prevent the phone from stealing your headphones)
There might be something to that. Unfortunately I keep Bluetooth on for my smart watch to connect. The headphones aren't normally selected, but I think they auto-connect sometimes when they come in range.
It also doesn't help that the main way of switching the connected device is via the Android app, that requires the phone to use. (Original Surface Headphones, I'm considering replacing them because the pads are falling apart already)
I wonder if this has anything to do with how the bandwidth is automatically decreased when taking a call vs when you're just playing audio. Less bandwidth means a slower but more robust connection or something like that?
I don't think BT devices do frequency hopping. The audio bandwidth is reduced just because the mic signal is added and has to share the connection. There's no change on the physical connection.
(Now, it would be great if there was some frequency hopping and your phones could reserve a full FM channel instead of messing with digital compression.)
That decreased bandwidth would still help to maintain a digital connection though, wouldn't it? There'd be a weaker and slower connection as the devices get further apart, so I was thinking less demand on the connection would keep them from dropping it.
I don't think it's the same as what you meant exactly, but I looked it up and Bluetooth does hopping between 2.402 and 2.480 GHz.
I have a pair of bluetooth sportbuds i connect to my work laptop for when i go in the office, and to my phone when i go for a jog. When I'm in the garage putting my running shoes on and put the earbuds in they never connect to my phone which is in my pocket. They instead connect to the work laptop...in the upstairs den...on the exact opposite side of the house. Every. Goddamn. Time.