Question Audio in Unity with no compression

Hello,

I'm adding audios to Unity in WAV format. And I don't want any type of compression because we are creating video animations that are not going to be on an app.

My doubt is, if i'm adding WAVs and I've changed the Compression Format to PCM, why does Unity tell me that my audios are still being compressed? Is there a way to not compress audios at all in Unity?

I have attached an example image of a WAV in PCM Format, no compression at all, but the ratio is still 66%

Thanks and pardon for my english (i'm not very fluent)