SpeechRecognitionEngine Members
Provides access to speech recognition services.
The following tables list the members exposed by the SpeechRecognitionEngine type.
Public Constructors
| Name | Description | |
|---|---|---|
| SpeechRecognitionEngine | Overloaded. Constructs a new instance of SpeechRecognitionEngine. |
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Public Properties
| Name | Description | |
|---|---|---|
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AudioFormat | Gets the current format of audio input being processed by the recognition engine. |
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AudioLevel | Gets the audio level of the SpeechRecognitionEngine. |
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AudioPosition | Gets the audio position of the SpeechRecognitionEngine. |
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AudioState | Gets the audio state of the SpeechRecognitionEngine. |
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BabbleTimeout | Gets and set a time out period for only background noise inputs. |
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EndSilenceTimeout | Gets and set the amount of silence a recognition engine requires before completing an unambiguous recognition. |
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EndSilenceTimeoutAmbiguous | Gets and set the amount of silence a recognition engine requires before completing an ambiguous recognition. |
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Grammars | Read-only property returning a list of all Grammar objects loaded into the current instance of the SpeechRecognitionEngine. |
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InitialSilenceTimeout | Gets and set the maximum amount of silence that can precede audio input before a recognition engine generates an error. |
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MaxAlternates | Gets and sets the maximum number of candidate results an instance of SpeechRecognitionEngine is to return. |
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RecognizerAudioPosition | Gets the audio position of the SpeechRecognitionEngine. |
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RecognizerInfo |
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Public Methods
(see also Protected Methods )
| Name | Description | |
|---|---|---|
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Dispose | Overloaded. |
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EmulateRecognize | Overloaded. Provides support for synchronous simulation of audio input to support testing and debugging. |
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EmulateRecognizeAsync | Overloaded. Provides support for asynchronous simulation of audio input to support testing and debugging. |
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Equals | Overloaded. (inherited from Object ) |
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GetHashCode | (inherited from Object ) |
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GetType | (inherited from Object ) |
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InstalledRecognizers | |
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LoadGrammar | Synchronously loads a specific grammar, as specified by a Grammar, for use by a SpeechRecognitionEngine. |
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LoadGrammarAsync | Asynchronously loads a specific grammar, as specified by a Grammar, for use by a SpeechRecognitionEngine. |
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QueryRecognizerSetting | |
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Recognize | Overloaded. Provides synchronous recognition support. |
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RecognizeAsync | Overloaded. Provides asynchronous recognition support. |
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RecognizeAsyncCancel | Terminates a running instance of a recognition engine without waiting for the current recognition operation to complete. |
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RecognizeAsyncStop | Terminates a running instance of a recognition engine after the current recognition operation to completes. |
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ReferenceEquals | (inherited from Object ) |
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RequestRecognizerUpdate | Overloaded. |
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SetInputToAudioStream | Assigns a specific audio stream as the input for the current instance of SpeechRecognitionEngine. |
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SetInputToDefaultAudioDevice | Assigns the system default audio input to the current instance of SpeechRecognitionEngine. |
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SetInputToNull | Assigns a null device as the input for the current instance of SpeechRecognitionEngine. |
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SetInputToWaveFile | Assigns a specific Wave format audio file as input to the current instance of SpeechRecognitionEngine. |
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SetInputToWaveStream | Assigns an audio stream in Wave format as input to the current SpeechRecognitionEngine instance. |
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SimulateRecognize | |
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ToString | (inherited from Object ) |
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UnloadAllGrammars | Unloads all Grammar objects currently loaded by a recognition engine. |
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UnloadGrammar | Unloads a grammar, as specified by an instance of Grammar, from an instance of SpeechRecognitionEngine. |
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UpdateRecognizerSetting | Overloaded. |
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Protected Methods
| Name | Description | |
|---|---|---|
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Dispose | Overloaded. |
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Finalize | (inherited from Object ) |
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MemberwiseClone | (inherited from Object ) |
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Public Events
| Name | Description | |
|---|---|---|
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AudioLevelUpdated | Raised when the audio level of the SpeechRecognitionEngine is updated. |
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AudioSignalProblemOccurred | Raised when the SpeechRecognitionEngine encounters an audio signal problem. |
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AudioStateChanged | |
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EmulateRecognizeCompleted | Event generated when an asynchronous emulation of speech recognition completes. |
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LoadGrammarCompleted | Event generated when an asynchronous load of a Grammar object in to a SpeechRecognitionEngine completes. |
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RecognizeCompleted | The event raised when an asynchronous recognition operation completes. |
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RecognizerUpdateReached | |
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SpeechDetected | Event raised by recognition engine when speech is detected. |
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SpeechHypothesized | Event raised when when the recognition engine detects speech and part of the audio input speech has been tentatively recognized. |
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SpeechRecognitionRejected | The event raised when the recognition engine detects speech, but can only return candidate phrases with low confidence levels. |
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SpeechRecognized | The event raised when the recognition engine detects speech, and has found one or more phrases with sufficient confidence levels. |
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See Also
Reference
SpeechRecognitionEngine Class
Microsoft.Speech.Recognition Namespace