Sample application that uses the MTAudioProcessingTap in combination with AV Foundation to visualize audio samples (volume) as well as applying a Core Audio audio unit effect (Bandpass Filter) to the audio data.


The sample requires at least one video asset in the Asset Library (Camera Roll) to use as the source media. It will automatically select the first one it finds. Download some funny video clip from internet.

Build Requirements

Building this sample requires Xcode 6 and iOS 7.0 SDK


This sample runnable on iPadSimulator iPad


Xamarin port changes are released under the MIT license


Ported to Xamarin.iOS by Rustam Zaitov