Microsoft Speech in .net core 3.0 - wpf

Question

I've used Microsoft Speech previously (not sure which version it was) with .net framework and it did work. I don't have that project on my PC now. I've downloaded and installed the Runtime 11 and SDK 11 and referenced the .dll in my .net core 3.0 project from C:\Program Files\Microsoft SDKs\Speech\v11.0\Assembly\Microsoft.Speech.dll. Here's what I've now in my ViewModel:
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.
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using Microsoft.Speech.Synthesis;
namespace Read
{
public class VM : INotifyPropertyChanged
{
SpeechSynthesizer synth;
string inputText;
public string InputText { get => inputText; set { inputText = value; OnPropertyChanged(); } }
public Command Speak { get; set; }
public Command Pause { get; set; }
public Command Resume { get; set; }
public Command Stop { get; set; }
public VM()
{
synth = new SpeechSynthesizer();
synth.SetOutputToDefaultAudioDevice();
synth.Volume = 75;
Speak = new Command(speak, (o) => synth.State != SynthesizerState.Speaking);
Pause = new Command(pause, (o) => synth.State == SynthesizerState.Speaking);
Resume = new Command(resume, (o) => synth.State == SynthesizerState.Paused);
Stop = new Command(stop, (o) => synth.State == SynthesizerState.Speaking || synth.State == SynthesizerState.Paused);
}
void speak(object obj) => synth.SpeakAsync(InputText);
void pause(object obj) => synth.Pause();
void resume(object obj) => synth.Resume();
void stop(object obj) => synth.SpeakAsyncCancelAll();
#region Notify Property Changed Members
}
public class Command : ICommand ...
}
and in xaml, I've these:
<Window ...>
<Window.DataContext>
<local:VM/>
</Window.DataContext>
<Grid Margin="5">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<TextBox Text="{Binding InputText}" AcceptsReturn="True" TextWrapping="Wrap"/>
<StackPanel Grid.Column="1">
<StackPanel.Resources>
<Style TargetType="Button">
<Setter Property="Margin" Value="5 0 0 5"/>
</Style>
</StackPanel.Resources>
<Button Content="Speak" Command="{Binding Speak}"/>
<Button Content="Pause" Command="{Binding Pause}"/>
<Button Content="Resume" Command="{Binding Resume}"/>
<Button Content="Stop" Command="{Binding Stop}"/>
</StackPanel>
</Grid>
</Window>
I think that's all I'd in my previous Text2Speech. Now with all these, in my .net core project, it isn't working!

Answer 1

Microsoft Speech Platform SDK 11 is not compatible with .NET Core.
Microsoft.CognitiveServices.Speech is the new .NET Standard compliant API that is available for .NET Core.
You'll find a quickstart on GitHub. The official docs is here.