This was a feature previous to the iPhone 13. There were even articles about how the noise cancelation option disappearing for the newest phones.
Apple confirms the removal of the Phone Noise Cancellation accessibility feature on its newest phones.
www.macworld.com
Apple's "Noise Cancellation" accessibility feature has been a staple on past iPhones, but may have been permanently removed from the iPhone 13.
www.engadget.com
The feature was available on previous generation iPhones for over a decade. Apple Support officially confirmed iPhone 13 series lacks call noise...
www.gsmarena.com
Voice isolation is a different technology, a much better one. Of course, this doesn't justify them removing noise cancellation for phone calls so long before they add voice isolation.
It seems this is not very well understood, so it was hard to find an explanation, but I did find one. I find that outside of Apple products, software companies also refer to "voice isolation" and "noise cancellation" as two different things.
So what is voice isolation and how does it work?
Voice isolation technology utilises AI to remove all ambient/background noise by recognising the ‘noise’ in an environment and prioritising the primary voices in a conversation. Voice isolation software can even differentiate between the core person talking and babble in the background. It can also be applied to both real-time (VOIP calls, online meetings) and pre-recorded audio (such as podcasts or webinars), enhancing the quality of any conversation taking place in a noisy environment.
What is the difference between Voice Isolation and Noise Cancellation?
You might think that you’ve experienced this before with a pair of headphones you’ve used, but noise cancellation and voice isolation are actually different things.