audio issue

[hayoungyou]

Hello.

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.

[art]

To make me able to provide you with an accurate answer, please specify some more details on the issue.

1. As far as I understand, you use i.MX6Q SABRE SD board and KK4.4.3_2.0.0 Android BSP by NXP, is it so? Please confirm.

2. What is the signal source? Is it a microphone, or linear output, or something else? What type of signal (sinusoide, white noise or something else) do you record? What is the input signal amplitude on the IN3R pin? Please specify.

3. How do you analyze the signal? Do you record it first then play back? Or do you run the spectrum analyzing application immediately on the i.MX6Q SABRE SD board? What application do you use to record the signal? Does the playback function work with no issue? Please specify.

Have a great day,
Artur