---
title: "init(copying:)"
framework: avfaudio
role: symbol
role_heading: Initializer
path: "avfaudio/avaudiopcmbuffer/init(copying:)-875xm"
---

# init(copying:)

Creates a mutable buffer by copying a read-only buffer’s audio data.

## Declaration

```swift
convenience init(copying readOnlyBuffer: AVReadOnlyAudioPCMBuffer)
```

## Parameters

- `readOnlyBuffer`: The read-only buffer to copy from.

## Discussion

Discussion This initializer allocates a new mutable buffer and copies all audio data from the read-only buffer.