Is the NEOM diffuser noisy?

I'm considering purchasing the NEOM diffuser for my home, but I'm concerned about the noise level. Can you tell me if the NEOM diffuser is noisy when it's operating? Is the sound noticeable or disruptive, especially if I'm trying to relax or sleep in the same room? I'd appreciate any insights you have on the noise level of this product, as it's an important factor for me in making my decision.