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Imx6q sabresd board's Wm8962 have noise

Question asked by xu yuanzhi on May 13, 2019
Latest reply on May 13, 2019 by igorpadykov

I use imx6q sabresd board to record sound. When I play the recorded sound wave file , I can hear a background noise. Even if i don't plug in the micphone, the recorded sound also have a small volume noise sound.  When I use computer to record a sound, the recorded sound's noise is very very small. So, the wm8962's background noise is very bigger than the computer's backgound noise. I want to know is there some setting to reduce the background noise? or the wm8962 itself have a bigger backgroud noise?

The kernel is linux 3.0.35