Introduction

The Amazing Audio Engine is a framework you can use to build iOS audio apps. It's built to be very easy to use, but also offers an abundance of sophisticated functionality.

The basic building-blocks of The Engine are:

Channels, which is how audio content is generated. These can be audio files, blocks, Objective-C objects, or Audio Units.
Channel Groups, which let you group channels together in order to filter or record collections of channels.
Filters, which process audio. These can be blocks, Objective-C objects, or Audio Units.
Audio Receivers, which give you access to audio from various sources.

In addition to these basic components, The Amazing Audio Engine includes a number of other features and utilities:

Deep integration of Audiobus, the inter-app audio system for iOS.
A channel class for playing and looping audio files.
An NSOperation class for loading audio files into memory.
A class for writing audio to an audio file.
Sophisticated multi-channel input hardware support.
Utilities for managing AudioBufferLists, the basic unit of audio.
Timing Receivers, which are used for sequencing and synchronization.
A class for managing easy conversion to and from floating-point format for use with the Accelerate vector processing framework.
A lock-free synchronization system that lets you send messages between your app's main thread, and the Core Audio thread, without having to worry about managing access to shared variables in a way that doesn't cause performance problems.
A suite of auxiliary components, including:
- A recorder class, for recording and mixing one or more sources of audio
- A playthrough channel, for providing easy audio monitoring
- Limiter and expander filters

Next: Get Started.