# SpeechUsageSource

> Tracon documentation. Tracon is a .NET package family that adds a control
> plane on Microsoft Agent Framework, published as NuGet packages that run
> inside your own ASP.NET Core application.
>
> Page: https://tracon.dev/api/tracon.speechusagesource/
> Summary: SpeechUsageSource: The source of a speech measurement.

<div class="api-provenance">Namespace Tracon · Assembly <code>Tracon.Abstractions.dll</code></div>

The source of a speech measurement.

```csharp
public enum SpeechUsageSource
```

## Fields

`Estimated = 2` 

Estimated from the request.

`Provider = 1` 

Reported by the provider.

`Unknown = 0` 

No measurement.