06-23-2020, 05:36 PM
Buzzing is probably down to quality of analog design rather than the mic or speaker involved. if this is the case an improved design might be practical, or it might already be at the limit. A more phone-oriented cpu would allow the use of mics with digital interfaces, sidestepping that issue, but then we probably wouldn't be able to have an open OS without binary blobs. A speaker connection is noted in the braveheart issues list so it may be improved in v1.2 boards already.