Preliminary questions before commitment of Sniffle about sniffle HOT 1 CLOSED

This would be an interesting thing to examine, however Sniffle is probably not the right tool for the job right now. While the LE Audio specification is coming out in conjunction with Bluetooth 5.2, and in the future headphones will make use of it, all current Bluetooth Audio devices use A2DP over Bluetooth Classic - essentially Bluetooth 2.1 and older. Headphones that use Bluetooth 2.1 can call themselves compatible with Bluetooth 4.x or 5.x because the newer specifications are a superset of the older specifications. Sniffle only supports Bluetooth LE, not Classic. I do plan on eventually supporting the isochronous connection features of Bluetooth 5.2 that are used for LE audio, but devices using this are at least an year out.

Unfortunately, there are no good cheap sniffers for Bluetooth Classic. The only cheap BT Classic sniffer I'm aware of is the Ubertooth, but it only supports basic rate (1M) and its classic support is very crude. There are limited low cost options due to a combination of somewhat uncommon modulation for the EDR modes, fast channel hopping (tight timing requirements), and limited interest in putting in new development effort for a legacy protocol that is being replaced.

For sniffing A2DP over Bluetooth Classic, you'd probably be best off with a commercial sniffer from Ellisys or Teledyne-Lecroy/Frontline.

from sniffle.