Array microphones do not claim to reduce background noise

Hello
I have purchased your company’s array microphone.
There is a narrative description of the product to reduce environmental noise and enhance the vocal collection process.
But in fact, there is no such function.
I bought 14 pieces, but the recording function of 14 pieces is worse after processing all environmental sounds are included, the attached waterfall chart is attached below.
1.Xmos processed
2-5. Mic Original sound
6.background