# AudioUnitProcessMultiple(_:_:_:_:_:_:_:_:) ``` func AudioUnitProcessMultiple(_ inUnit: AudioUnit, _ ioActionFlags: UnsafeMutablePointer?, _ inTimeStamp: UnsafePointer, _ inNumberFrames: UInt32, _ inNumberInputBufferLists: UInt32, _ inInputBufferLists: UnsafeMutablePointer>, _ inNumberOutputBufferLists: UInt32, _ ioOutputBufferLists: UnsafeMutablePointer>) -> OSStatus ``` --- 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)