Background - I saw a video titled "AVAudioEngine in Practice" from the following list of videos published at Apple's recent WWDC to apply sound effects to an audio. https://developer.apple.com/vide...

I have an app in which I use AVAudioEngine for playing files from the local file system by using AVAudioPlayerNodes and AVAudioFiles. This works perfectly fine. Now I would like to enable my setup...

I'm trying to generate a spectrogram from an AVAudioPCMBuffer in Swift. I install a tap on an AVAudioMixerNode and receive a callback with the audio buffer. I'd like to convert the signal in the bu...

I've been playing around with Apple's shiny new AVFoundation library, but so far I've unable to set the input or output devices (e.g. a USB sound card) used by an AVAudioEngine, and I can't seem to...

I have an audio file that I want to process using some effects (like pitch effect) and then write the final result to a file. Before I process the file and save it to disc I let the user play with...

I am working on an iOS app that uses AVAudioEngine for various things, including recording audio to a file, applying effects to that audio using audio units, and playing back the audio with the eff...

Currently, I am trying to change the time pitch of an existing audio file from the Document folder, then override the old file with the modified one using AVAudioEngine. I have got the first part w...

I want to process the audio from my device's built-in microphone (AVAudioInputNode) with an audio unit effect (AVAudioUnitEffect). For my example, I'm using AVAudioUnitReverb. Connecting AVAudioUni...

I'd like to connect my electric guitar to my app. I have hardware (the Line6 Sonic Port) that passes the audio from my guitar into my iPhone. I've figured out how to get audio playing out to my hea...