# AVAudioSinkNodeReceiverBlock A block that receives audio data from an audio sink node. ``` typealias AVAudioSinkNodeReceiverBlock = (UnsafePointer, AVAudioFrameCount, UnsafePointer) -> OSStatus ``` ## Parameters `timestamp` The time the input data renders. `frameCount` The number of sample frames of input the engine provides. `inputData` The input audio data. ## Return Value An `OSStatus` result code. When an error occurs, consider the audio data invalid. ## Discussion --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)