# AUDIO_BACKEND_DUPLEX

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

Backend can open full-duplex streams.

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

[language/library/src/audio/binding/backend.ds:55](https://github.com/destack-sh/destack/blob/main/language/library/src/audio/binding/backend.ds#L55)