Text-To-Speech with Windows 10 IoT Core & UWP on Raspberry Pi Part 2

public async Task SayAsync(string text, double balance)
{
    speechPlayer.AudioBalance = balance;
    using (var stream = await speechSynthesizer.SynthesizeTextToStreamAsync(text))
    {
        speechPlayer.Source = MediaSource.CreateFromStream(stream, stream.ContentType);
    }
    speechPlayer.Play();
}

internal class SayController : Controller
{
    private readonly SpeechService _speechService;

    public SayController(SpeechService speechService)
    {
        _speechService = speechService;
    }

    public async Task<WebServerResponse> Get(string text, string floor)
    {
        if (string.IsNullOrEmpty(floor))
        {
            await _speechService.SayAsync(text, 0)
        }
        else if (floor.ToLower() == "up")
        {
            await _speechService.SayAsync(text, -1);
        }
        else
        {
            await _speechService.SayAsync(text, 1);
        }
        return WebServerResponse.CreateOk("OK");
    }
}

http://<IP>:8085/say?text=Hello&floor=up