SpeechRecognitionConstraintType Enum
Definition
Important
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Specifies the grammar definition constraint used for speech recognition.
public enum class SpeechRecognitionConstraintType/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
enum class SpeechRecognitionConstraintType[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
public enum SpeechRecognitionConstraintTypevar value = Windows.Media.SpeechRecognition.SpeechRecognitionConstraintType.topicPublic Enum SpeechRecognitionConstraintType- Inheritance
-
SpeechRecognitionConstraintType
- Attributes
Windows requirements
| Device family |
Windows 10 (introduced in 10.0.10240.0)
|
| API contract |
Windows.Foundation.UniversalApiContract (introduced in v1.0)
|
Fields
| Name | Value | Description |
|---|---|---|
| Topic | 0 | A pre-defined, web-service grammar constraint based on a dictation topic. See SpeechRecognitionTopicConstraint. |
| List | 1 | A constraint based on a list of words or phrases. See SpeechRecognitionListConstraint. |
| Grammar | 2 | A constraint based on a Speech Recognition Grammar Specification (SRGS) grammar file. See SpeechRecognitionGrammarFileConstraint. |
| VoiceCommandDefinition | 3 | A constraint based on a Voice Command Definition (VCD) file. See SpeechRecognitionVoiceCommandDefinitionConstraint. |
Remarks
Constraints, or grammars, define the spoken words and phrases that can be matched by the speech recognizer.
You can specify one of the pre-defined, web-service grammars (see SpeechRecognitionTopicConstraint) or you can create your own custom grammar (see SpeechRecognitionGrammarFileConstraint, SpeechRecognitionListConstraint, and SpeechRecognitionVoiceCommandDefinitionConstraint) that is installed with your app.
To use web-service constraints, speech input and dictation support must be enabled in Settings by turning on the "Get to know me" option in the Settings -> Privacy -> Speech, inking, and typing page. See "Recognize speech input" in Speech recognition.