I use imx6q-sabresd.
Android version is KK4.4.3_2.0.0.
Linux version is 3.2.0_29-generic.
Audio codec is WM8962.
Although I get audio signal with 44.1kHz sampling rate, it gets only below about 7.7kHz.
Signal over 7.7kHz is cut off and has low dB like picture.
I use IN3R mic pin.
I didn't change any code about audio.
Please, tell me why it happens and how I can solve it.