# AudioBackendSelectionPolicy

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

Audio backend selection policy.

```ds title="AudioBackendSelectionPolicy"
export enum AudioBackendSelectionPolicy {
    Fallback = 1,
    Exact = 2,
}
```

[language/library/src/audio/binding/backend.ds:30:35](https://github.com/destack-sh/destack/blob/main/language/library/src/audio/binding/backend.ds#L30-L35)

## Variants

### `Fallback = 1`

Use another backend when the requested backend is unavailable.

### `Exact = 2`

Fail unless the requested backend is available.