Is it possible use AEC on ReSpeaker USB Mic Array with the 3.5mm jack audio input? The idea is input the ambient sound (e.g. music or tv sound) in 3.5mm jack audio input e get the voice filtered on usb.
I tried use the firmware i2s_i1o2.bin, but I’m not sure if this works like I said above. I think not, cause not worked! 
Hey Arlindo, did you ever have success?
I am trying to feed some troublesome noise in as well.
Actually stuck on figuring out how to use the i2s_i1o2.bin firmware in the first place.
So, I gave up
Without support, as you can see, manuals, open code, etc, is very difficult to get success.
In my case, the i2s_i1o2 couldn’t help because it not was designed to get the ambient sound.
Today I’m not use Respeaker anymore, any other cheaper mic is more flexible than it.
Good luck!
Thanks, you just went with a simple omni mic or a different mic array?