Background sound is one of the newly added functions of iOS 15. Apple's official definition is that it can help you stay focused, calm or relaxed by continuously playing stable, bright or low noise, waves, rain and streams.
A * * * has built-in six sound effects, the first three are balanced noise, bright noise and dark noise, and the last three are ocean, rain and streams. The first three can be understood as Apple's white noise function, which helps you better isolate the environment. After using it, I really feel my concentration has improved. The sound effects of the last three natural environments have always been my sleep AIDS, and it is easier to fall asleep when listening to the sound of the waves at night.
Speech recognition function
Apple's speaker is a stereo speaker, which has a nice sound, and the headphones on the side and bottom are different, rich and lively, and it sounds more circular, which is very good.
The level of stereo speakers of iPhoneXR in the mobile phone industry is actually good among dual stereo speakers, so I have to mention Meizu, a domestic mobile phone, but because Meizu is too small, there are few real audiences.
This feature allows iPhone or iPad to help you recognize certain sounds and push notifications to you when they are detected. Whether wearing headphones or doing something you can't hear, you won't ignore important information.
Such as fire alarm, doorbell, knock on the door, children crying, the sound of water boiling, etc. It's all urgent This function is still very practical and can play a great role at critical moments. However, these sound options cannot be customized. Only sound options provided by Apple can be selected.