AVFoundation Audio

Configure AVAudioSession and construct AVAudioEngine node graphs for playback, recording, real-time DSP, and multi-track audio pipelines in iOS and iPadOS.

Contents

• Audio Session Configuration
• Interruption & Route Change Handling
• AVAudioEngine Architecture
• Live Microphone Capture & Taps
• Common Mistakes
• Review Checklist
• References

Audio Session Configuration

AVAudioSession coordinates app audio with the system audio subsystem. Defer activation until playback or recording begins to avoid prematurely silencing background audio.