The 2.8 MHz limitation comes from shipping raw RF samples off the device over USB 2. When operating as a DVB-T receiver the device decodes the signals before sending them over USB so it uses less bandwidth.
The device was originally intended only as a dtv receiver and not a general purpose software defined radio. The hobbyist/ hacker community discovered the hidden debug mode that allows raw data acquisition and wrote drivers for it.
That's too bad, I'd love to have the ability to explicitly trade off the recommendation criteria between music features and user preferences. I understand there's no real incentive for spotify to do this though.
Does anyone know if the spotify recommendation algorithm analyzes the actual music in order to group songs? Or does it only do clustering based on users' listening habits? It seems like incorporating the former could help with discovering new and potentially less well known music, which is an area I'd like to see spotify improve on.
The device was originally intended only as a dtv receiver and not a general purpose software defined radio. The hobbyist/ hacker community discovered the hidden debug mode that allows raw data acquisition and wrote drivers for it.