Which is better, ai call noise cancellation or dual mic noise cancellation?

ai call noise reduction by artificial intelligence deep learning, mastering the phone owner's voice characteristics, and then using neural networks to train the artificial intelligence algorithm that separates noise and human voice.

Currently on the software side, this algorithm is very mature. The effect of noise reduction is no worse than dual-microphone technology. In terms of training costs, we talk a lot on our cell phones every day, and AI is not worried about not having data for training.