Google working on new feature to improve call quality on Android
There are several factors that can affect the quality of a voice call. Cellular coverage is obviously one of them, and then there is also hardware where the placement, type, and quality of the microphone used can also impact the overall clarity of your voice. Then there is also software which can be used to digital clean up background noise to deliver clearer sound.
The good news for that who do make a lot of voice calls, Google appears to be working on a new feature tentatively called “clear calling” that will apparently be able to reduce background noise during calls. This is going to be a software update which means that anyone using an Android device that is eligible for the update will be able to benefit from it, regardless of what phone model or brand you’re using.
Google is working on a feature called "clear calling" that will reduce background noises during calls. It works "for most mobile networks" but it's "not available for Wi-Fi calling." Contents from your calls are "not sent to Google."
— Mishaal Rahman (@MishaalRahman) September 8, 2022
According to Mishaal Rahman who initially reported the feature, it will work for “most mobile networks”, which once again means that more people can benefit from the change since it won’t necessarily be (too) hardware dependent.
That being said, we imagine that this will most likely benefit users who do not use Bluetooth headsets when making calls. This is because there are many Bluetooth headsets that already offer up similar features, so for some users, the update might not be as useful except during times when they might not have a Bluetooth headset on them, but seeing as this is still an improvement, it should be a welcome one anyway.
Source: Android Police