# AUDIO_BACKEND_LOOPBACK

`import { AUDIO_BACKEND_LOOPBACK } from "destack:audio/binding";`

Backend can capture host loopback output.

```ds title="AUDIO_BACKEND_LOOPBACK"
const AUDIO_BACKEND_LOOPBACK: AudioBackendFlags
```

[language/library/src/audio/binding/backend.ds:58](https://github.com/destack-sh/destack/blob/main/language/library/src/audio/binding/backend.ds#L58)