# int32ChannelData The buffer’s 32-bit integer audio samples. ``` var int32ChannelData: UnsafePointer>? { get } ``` ## Discussion The `int32ChannelData` property returns the buffer’s audio samples if the buffer’s format has 4-byte integer samples, or `nil` if it’s another format. For more information, see [`floatChannelData`](/documentation/AVFAudio/AVAudioPCMBuffer/floatChannelData). --- 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)