语音识别在使用UWP的raspberry pi 3（Windows IoT核心版）中不起作用

Question

 var speechRecognizer = new SpeechRecognizer();
            await speechRecognizer.CompileConstraintsAsync();
            var webSearchGrammar = new Windows.Media.SpeechRecognition.SpeechRecognitionTopicConstraint
                (Windows.Media.SpeechRecognition.SpeechRecognitionScenario.WebSearch, "webSearch");
            speechRecognizer.Constraints.Add(webSearchGrammar);
            await speechRecognizer.CompileConstraintsAsync();
            SpeechRecognitionResult speechRecognitionResult = await speechRecognizer.RecognizeWithUIAsync();
            var question = speechRecognitionResult;

This is the code i am using to recognize speech in uwp, the solution is working in local but when deployed in raspberry pi, it's not able to recognize the speech. I also updated the latest version of windows10 iot core. Before updating windows 10 iot core it worked in raspberry pi but after updation it's not able to recognize(it's an observation)

Answer 1

You should check if the upgraded device has provided Voice Permission from Cortana. If not, you need to launch cortana on your device, please refer to this document about Cortana On IoT . When using Speech recognition , we should ensure that device has a microphone or the equivalent, and provides the Privacy for Speech, inking, and typing.