ios - Dividing signal into frames -

ios - Dividing signal into frames -

i working on simple net radio app in ios simple speech/music discrimination. main thought radio plays signal url , @ same time checks type of signal beingness broadcast. when detects speech alter channel , on.

i wonder how can read sampling frequency signal in ios , how split signal url frames. know should utilize core audio, i'm quite new in ios , can't find it.

ios objective-c sampling divide