# Audio demo

generates and plays test tones using the MiniaudioBackend.

```{raw} html
<a class="example-run-button" href="../demos/features_ui_audio.html">▶ Run in browser</a>

```

**Tags:** `ui`

Demonstrates:
- AudioStreamPlayer with programmatically generated sine wave tones
- Play, pause, resume, and stop controls via keyboard
- Volume and pitch adjustment
- On-screen status display

Controls:
    1-4: Play tones (C4=262Hz, E4=330Hz, G4=392Hz, C5=523Hz)
    SPACE: Pause / resume current tone
    S: Stop all audio
    UP/DOWN: Adjust volume
    LEFT/RIGHT: Adjust pitch
    ESC: Quit

## Source

```{literalinclude} ../../examples/features/ui/audio.py
:language: python
:linenos:
```