问题
What frameworks are required to detect how loud someone is talking into a microphone... Also, can anyone tell me what to search for in the documentation or google so I can create some code... What line of code would be commonly used when detecting volume levels of noise through the microphone? Thanks!
回答1:
This seems to be a duplicate of:
Realtime microphone sound level monitoring
However, that question is old and the accepted answer links to a deprecated library. They now recommend that you instead use AVAudioRecorder. They suggest this tutorial and it seems to be what you are looking for.
来源：https://stackoverflow.com/questions/6183416/ios-xcode-microphone-volume-detection