[MyL5] First Impressions of Evergreen (Tim's story)

[fsflover]

@Products4People

I’m very concerned with audio quality on the recipient end of phone calls.

Quote from one of the developers:

EVERGREEN: Librem caller sounds muffled to the recipient (SOLVED)

At this moment we’re gathering audio from both microphones (top and bottom one) and apply quite strong echo cancellation - I guess that’s where the “muffled” voice comes from. Echo cancellation parameters can still be tweaked (I settled on a set of params that’s pretty close to PulseAudio’s defaults so far), and of course we could only use a single microphone from the other end than the currently active speaker; however, I haven’t figured out a clean way to do that yet as there’s bunch of non-ob…