MadelineProto/docs/TD_docs/constructors/audio.md

---
title: audio
description: Describes audio file. Audio is usually in mp3 format
---
## Constructor: audio  
[Back to constructors index](index.md)



Describes audio file. Audio is usually in mp3 format

### Attributes:

| Name     |    Type       | Required | Description |
|----------|---------------|----------|-------------|
|duration|[int](../types/int.md) | Yes|Duration of the audio in seconds as defined by sender|
|title|[string](../types/string.md) | Yes|Title of the audio as defined by sender|
|performer|[string](../types/string.md) | Yes|Performer of the audio as defined by sender|
|file\_name|[string](../types/string.md) | Yes|Original name of a file as defined by sender|
|mime\_type|[string](../types/string.md) | Yes|MIME type of a file as defined by sender|
|album\_cover\_thumb|[photoSize](../types/photoSize.md) | Yes|Thumb of the album's cover as defined by sender. Full size thumb should be extracted from the downloaded file, nullable|
|audio|[file](../types/file.md) | Yes|File with the audio|



### Type: [Audio](../types/Audio.md)


### Example:

```
$audio = ['_' => 'audio', 'duration' => int, 'title' => 'string', 'performer' => 'string', 'file_name' => 'string', 'mime_type' => 'string', 'album_cover_thumb' => photoSize, 'audio' => file];
```  

[PWRTelegram](https://pwrtelegram.xyz) json-encoded version:

```
{"_": "audio", "duration": int, "title": "string", "performer": "string", "file_name": "string", "mime_type": "string", "album_cover_thumb": photoSize, "audio": file}
```


Or, if you're into Lua:  


```
audio={_='audio', duration=int, title='string', performer='string', file_name='string', mime_type='string', album_cover_thumb=photoSize, audio=file}

```