Note

Please see Azure Cognitive Services for Speech documentation for the latest supported speech solutions.

Microsoft Speech Platform

ISpRecoGrammar

The ISpRecoGrammar interface enables applications to manage the words and phrases that the speech recognition (SR) engine will recognize.

A single SpRecognizer object can have multiple SpRecoContext objects associated with it. And similarly, a single SpRecoContext object can have multiple SpRecoGrammar objects associated with it. Using a one-to-many relationship with SpRecoContext objects and SpRecoGrammar objects allows applications to separate types of recognizable phrases and content into separate objects for clearer application logic.

See Designing Grammar Rules for examples of how to create context-free grammars.

Methods in Vtable Order

ISpRecoGrammar Methods	Description
ISpGrammarBuilder interface	Inherits from ISpGrammarBuilder and all those methods are accessible from an ISpRecoGrammar object.
GetGrammarId	Retrieves the grammar identifier associated with the application.
GetRecoContext	Retrieves the context object that created this grammar.
LoadCmdFromFile	Loads a command and control grammar from a file.
LoadCmdFromObject	Loads a command and control grammar from a COM object.
LoadCmdFromResource	Loads a command and control grammar from a Win32 resource.
LoadCmdFromMemory	Loads a command and control grammar from memory.
LoadCmdFromProprietaryGrammar	Loads an engine proprietary format command and control grammar.
SetRuleState	Activates or deactivates a rule by its rule name.
SetRuleIdState	Activates or deactivates a rule by its rule ID.
SetWordSequenceData	Sets a word sequence buffer in the SR engine.
SetTextSelection	Sets the current text selection and insertion point information.
IsPronounceable	Determines if the word has a pronunciation.
SetGrammarState	Sets the grammar state.
SaveCmd	Allows applications using dynamic grammars to save the current grammar state to a stream.
GetGrammarState	Retrieves recognition grammar state information.