Category Archives: Bluetooth

Bluetooth sound quality issues in OSX

I love the wireless technologies, I truly adore them. One thing that bothers me about Bluetooth though is sound glitches and jumps – it works pretty for some time, and then all of a sudden it starts twitching, small fractions of it missing. Minor, but very annoying.

This is actually broader issue than OSX – for instance, no smartphone works with a Bluetooth headset perfectly if I keep the phone in my jeans pocket. It all goes well and nice till it gets jumpy out of the blue – and then back normal again.

Now with Mac it’s a bit different – at some point sound starts twitching, and it goes on then till I re-initiate Bluetooth connection. And it was kinda alright till it got me. One speculation I found over the Internet was connection bitrate is too low and needs to be raised with this command line:

defaults write com.apple.BluetoothAudioAgent “Apple Bitpool Min (editable)” 60

because default is 40. So I have tried that, it didn’t help much, so I assumed that’s not the right solution and forgot about it. And after a while I did what I should have done right away – I restarted Bluetooth on Mac. And… speaker stopped working at all – it connected, but failed with something like “compressed stream is unacceptable”. Since I forgot I mangled Bluetooth settings, first thought was my speaker broke.¬†And it was kinda alright (it has wired input, quite old and I don’t use it every day) till it got me.

So I googled up the error message and results stroke me with remembrance. Changing the value in aforementioned command to 53 (that was highest suggested working rate) and… it’s all good now! Can’t say about twitches – they were sporadic and never ocurred right away – but at least I got it back working.

One note: that command is for user space, don’t run it with sudo (no harm there, just wouldn’t work).