Calls between iPhone users could benefit from automatic audio filtering to improve the quality of the sound heard by each user, a system that would only come into effect once it knows one user is having trouble hearing what is being said by the other.

Phone calls have historically endured numerous issues that can make the call difficult to hear, ranging from the quality of the connection to, for the most part, external factors. Callers in a noisy environment or with too quiet a voice may not necessarily be heard by the recipient, and could result in a request to repeat what was just said.

Källa: Speech enhancements to clean up iPhone audio could kick in after uncle