# Sandbox.Speech.Synthesizer.OnVisemeReached

```csharp
Synthesizer OnVisemeReached(System.Action<int,System.TimeSpan> action)
```

### Parameters

- `action` (`System.Action<int,System.TimeSpan>`)

### Returns

`Synthesizer`

Declared in [Sandbox.Speech.Synthesizer](/api/Sandbox.Speech.Synthesizer).
Assembly: `Sandbox.Engine`.