Apple AirPods Max Wireless Review - Chia Sẻ Kiến Thức Điện Máy Việt Nam

Noise Cancelling

Yes

Note: These over-ears have a great noise isolation performance thanks to their adaptive ANC system. The ANC automatically adjusts depending on the headphones’ seal around your ears as well as to your environment, depending on the kind of noise and its directionality. It means their performance is highly dependent on the environment and fit. That said, the ANC reduces sounds like ambient chatter and the hum of AC units extremely well. We also noticed that when we extend the length of time of any particular frequency, the overall ANC performs more favorably. As a result, it’s hard to compare their performance to other non-adaptive ANC headphones or between firmware updates, as the ANC may perform better in some cases than others. However, there have been a few articles and threads that note a drop in performance, starting in May 2021, and users also have alerted us of a potential change to ANC strength after updating to firmware 4E71. We measured a difference in our unit’s isolation (you can see our previous results here), but don’t know if this is due to the firmware update, or another factor affecting their measured noise isolation. There’s a difference in non-ANC measurements that indicates that these results aren’t directly comparable⁠, and it extends to our firmware 5B58 measurements. We’re currently investigating this issue and will update the review as soon as we can.

Users have also reported high cabin pressure when using ANC. It’s a pressure-like feeling inside your ears when the ANC is on and is a similar sensation to when a plane ascends and descends. It’s caused by your brain perceiving the lack of low-frequency sound as a pressure difference between the inner and outer ear, which can become uncomfortable. The cabin pressure of these headphones feels strong when their ANC is on. However, it won’t be an issue for most users unless you’re already sensitive to ANC. In comparison, other ANC over-ears, like the Bose QuietComfort 45/QC45 Wireless, seem to have somewhat less noticeable (but still present) cabin pressure.