Hololens中不需要注视应用程序窗口的语音/语音识别

Question

我正在使用Microsoft的此示例here用于UWP平台。 当应用程序在Hololens中运行时，我需要凝视2D窗口才能正常工作。 如果我不这样做，该应用程序将完全不响应语音命令。

但是这不是我想要的。我希望能够在发出语音命令时环顾周围的环境。类似于如何向Cortana发出命令。在这种情况下，您没有应用程序窗口。 我该如何实现？

初始化：

private async Task InitializeRecognizer(Language recognizerLanguage)
        {
            if (speechRecognizer != null)
            {
                // cleanup prior to re-initializing this scenario.
                speechRecognizer.StateChanged -= SpeechRecognizer_StateChanged;
                speechRecognizer.ContinuousRecognitionSession.Completed -= ContinuousRecognitionSession_Completed;
                speechRecognizer.ContinuousRecognitionSession.ResultGenerated -= ContinuousRecognitionSession_ResultGenerated;

                this.speechRecognizer.Dispose();
                this.speechRecognizer = null;
            }

            try
            {
                this.speechRecognizer = new SpeechRecognizer(recognizerLanguage);
                speechRecognizer.StateChanged += SpeechRecognizer_StateChanged;

                // add list constaints here



                SpeechRecognitionCompilationResult result = await speechRecognizer.CompileConstraintsAsync();
                if (result.Status != SpeechRecognitionResultStatus.Success)
                {
                    rootPage.NotifyUser( "Unable to compile grammar.",NotifyType.ErrorMessage);
                }
                else
                {
                    speechRecognizer.ContinuousRecognitionSession.Completed += ContinuousRecognitionSession_Completed;
                    speechRecognizer.ContinuousRecognitionSession.ResultGenerated += ContinuousRecognitionSession_ResultGenerated;

                }
            }
            catch (Exception ex)
            {
                if ((uint)ex.HResult == HResultRecognizerNotFound)
                {
                    rootPage.NotifyUser( "Speech Language pack for selected language not installed.",NotifyType.ErrorMessage);
                }
                else
                {
                    var messageDialog = new Windows.UI.Popups.MessageDialog(ex.Message, "Exception");
                    await messageDialog.ShowAsync();
                }
            }

        }

收听方法

public async void StartListening()
        {
            if (isListening == false)
            {
                // The recognizer can only start listening in a continuous fashion if the recognizer is currently idle.
                // This prevents an exception from occurring.
                if (speechRecognizer.State == SpeechRecognizerState.Idle)
                {
                    try
                    {
                        await speechRecognizer.ContinuousRecognitionSession.StartAsync();
                        isListening = true;
                    }
                    catch (Exception ex)
                    {
                        var messageDialog = new Windows.UI.Popups.MessageDialog(ex.Message, "Exception");
                        await messageDialog.ShowAsync();
                    }
                }
            }
            else
            {
                isListening = false;
                if (speechRecognizer.State != SpeechRecognizerState.Idle)
                {
                    try
                    {
                        // Cancelling recognition prevents any currently recognized speech from
                        // generating a ResultGenerated event. StopAsync() will allow the final session to 
                        // complete.
                        await speechRecognizer.ContinuousRecognitionSession.CancelAsync();
                    }
                    catch (Exception ex)
                    {
                        var messageDialog = new Windows.UI.Popups.MessageDialog(ex.Message, "Exception");
                        await messageDialog.ShowAsync();
                    }
                }
            }


        }