When you’re ready to dig deeper, the iOS Dev Center contains guides, reference books, sample code, and more. Also read Best Practices for iOS Audio, which offers guidelines and lists the audio and file formats to use for best performance and best user experience. See Playing UI Sound Effects or Invoking Vibration Using System Sound Services.īe sure to read the next section, The Basics: Audio Codecs, Supported Audio Formats, and Audio Sessions, for critical information on how audio works in iOS. To play user-interface sound effects, or to invoke vibration on devices that provide that feature, use System Sound Services. To parse audio streamed from a network connection, use Audio File Stream Services. Audio Queue Services also supports recording and provides access to incoming audio packets, as described in Recording with Audio Queue Services. See Playing Sounds with Control Using Audio Queue Services. To play sounds with the highest degree of control, including support for synchronization, use Audio Queue Services. To provide lowest latency audio, especially when doing simultaneous input and output (such as for a VoIP application), use the I/O unit or the Voice Processing I/O unit. See Playing Sounds with Positioning Using OpenAL.
To provide full-featured audio playback including stereo positioning, level control, and simultaneous sounds, use OpenAL. See Playing Sounds Easily with the AVAudioPlayer Class and Recording with the AVAudioRecorder Class. To play and record audio in the fewest lines of code, use the AV Foundation framework. To play songs, audio podcasts, and audio books from a user’s iPod library, see Playing Audio Items with iPod Library Access. This section on sound provides a quick introduction to implementing iOS audio features, as listed here: Then add a #import statement near the top of relevant source files. Important: To use the features of the Audio Unit framework, add the Audio Toolbox framework to your Xcode project and link against it in any relevant targets.
#Mono framework audio how to
For detailed information on how to add frameworks to your project, see Files in Projects in Xcode Project Management Guide. For example, to provide access to the AV Foundation framework in a source file, add a #import statement near the top of the file.
#Mono framework audio code
To allow your code to use the features of an audio framework, add that framework to your Xcode project, link against it in any relevant targets, and add an appropriate #import statement near the top of relevant source files. For information on OpenAL, see the OpenAL website, OpenAL FAQ for iPhone OS, and the oalTouch sample code project. Use the OpenAL framework to provide positional audio playback in games and other applications.
For details, see Audio Unit Hosting Guide for iOS. Use the Audio Unit framework to connect to and use audio processing plug-ins. For details, see Audio Toolbox Framework Reference and the SpeakHere sample code project. Use the Audio Toolbox framework to play audio with synchronization capabilities, access packets of incoming audio, parse audio streams, convert audio formats, and record audio with access to individual packets. For details, see AV Foundation Framework Reference and the avTouch sample code project. Use the AV Foundation framework to play and record audio using a simple Objective-C interface. For details, see Media Player Framework Reference, iPod Library Access Programming Guide, and the AddMusic sample code project. Use the Media Player framework to play songs, audio books, or audio podcasts from a user’s iPod library. These tools are arranged into frameworks according to the features they provide, as follows: IOS offers a rich set of tools for working with sound in your application. The information in this document has not been updated specifically for iOS 4.0. Important: This document contains information that used to be in App Programming Guide for iOS.
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