# OnPreprocessAudio()

> Add this function to a subclass to get a notification just before an audio clip is being imported.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor](/engine/6000.0/script-reference/unityeditor.md)

```csharp
public void OnPreprocessAudio()
```

### Remarks

This lets you control the import settings trough code.

### Examples

```csharp

using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

public class MyAudioPostprocessor : AssetPostprocessor
{
    void OnPreprocessAudio()
    {
        if (assetPath.Contains("mono"))
        {
            AudioImporter audioImporter = (AudioImporter)assetImporter;
            audioImporter.forceToMono = true;
        }
    }
}
```