How do I develop Windows Desktop applications that do more with Speech Technology?"

The information in this article applies to:

• SpeechKit 10

Summary

Develop Windows Desktop applications that speak and listen using your favorite speech technology with SpeechKit.

More Information

SpeechKit includes Windows App SDK compatible .NET 5.0 assemblies to support your application's target framework. This means WinUI 3.0 apps can use all the SpeechKit supported speech APIs.

These applications require the applicable SpeechKit Speech API library and speech recognition grammar files in the same directory (AppX) as the application .exe.

To access the SpeechKit classes within your Windows Desktop application, add them to your project References:

1. Within your project, right click on the Dependencies node in the Solution Explorer.
2. Add references to the Chant shared and SpeechKit assemblies:
   1. Program Files\Chant\SpeechKit 10\NET\libv5.0\Chant.SpeechKit.Windows.dll and
   2. Program Files\Chant\SpeechKit 10\NET\libv5.0\Chant.Shared.Windows.dll.

To access the SpeechKit .NET classes within your application, add references to the Chant shared and SpeechKit assemblies in your code.

using System;
...
using Chant.SpeechKit.Windows;
using Chant.Shared.Windows;

Declare variables for the SpeechKit classes, instantiate instance, add the event handlers, and set the license properties.

private NSpeechKit _SpeechKit = null;
private NSAPI5Recognizer _Recognizer = null;
private NSAPI5Synthesizer _Synthesizer = null;
public MainWindow()
{
    InitializeComponent();
    // Instantiate SpeechKit
    _SpeechKit = new NSpeechKit();
    if (_SpeechKit != null)
    {
        // Set license properties
        //_SpeechKit.SetLicense("LicenseRegistrationNumber", "LicenseSerialNumber");
        // Else, for evaluation, set only evaluation serial number
        _SpeechKit.SetLicense(string.Empty, "EvaluationSerialNumber");
        _Recognizer = _SpeechKit.CreateSAPI5Recognizer();
        if (_Recognizer != null)
        {
            _Recognizer.RecognitionCommand += this.Recognizer_RecognitionCommand;
        }
        _Synthesizer = _SpeechKit.CreateSAPI5Synthesizer();
        if (_Synthesizer != null)
        {
            _Synthesizer.WordPosition += Synthesizer_WordPosition;
        }
    }
}

If the application requires speech recognition, it requires use of the microphone. Select Microphone under Package.appxmanifest Capabilities in Visual Studio or add the following to the Package.appxmanifest file:

    <Capabilities>
        <DeviceCapability Name="microphone" />
    </Capabilities>

If the application requires speech recognition, it requires use of the microphone. Set the Microphone usage to On for the app under Settings->Privacy->Microphone.

Windows desktop sample projects are installed at the following location: Documents\Chant\SpeechKit 10\WinUI\Windows\cs.