Shouldn't be too hard, at least in principle, to enable a low-pass digital filter in the Android audio subsystem. There must already be one there for anti-alias

Shouldn't be too hard, at least in principle, to enable a low-pass digital filter in the Android audio subsystem. There must already be one there for anti-aliasing when apps demand 16000 or 8000 samples/second capture. Just need to leave the 8KHz low-pass filter enabled for the 99% of us that never use the mike to capture music.