User Interface Service Software Developerís Guide - Hitech Projects

January 2008
Public
1.3.2 Explicit speech interaction component interface
This component exposes to other services and application services the IVoiceIO interface to
provide three main functionalities: recognize and understand user input, synthesize predefined
system outputs and generate system responses. The capabilities offered through this interface
are described in the following sections, including descriptions and examples of use.
1.3.2.1 Capability IVoiceIO::ListenToUser()
Syntax
string listenToUser(string userID, string applicationID, string sessionID, string grammarURL,
string semVar, string speechInputURL)
Description
This method is used for accessing Speech recognition and understanding component. It
requires userID, applicationID and sessionID as input for setting up the proper resources, the
URL of the grammar to be used for the current speech understanding and the semantic
variable where the semantics are stored, and finally the URL of the recorded speech input. It
returns a string containing information for the recognized and understood data formatted in a
XML schema.
Example
string result = proxy.listenToUser(“myUser”, “myApp”, “mySession”,
“C:\\myApp\\GetAction.grxml”, “command’,
newrecFileURL);
In this example the ListenToUser method is called from myApp application for user myUser
and session mySession. The system will try to recognize and understand the user sentence
contained in newrecFileURL using the grammatical and semantic information off
GetAction.grxml grammar. A sample grammar follows (for more detailed information on
GRXML grammar syntax refer to D4.2 §5.3.2: Speech Recognition Grammar Specification).
command='';
command = 'LIGHTS_ON'
command = 'LIGHTS_OFF'
I want to
I would like to
Please
Amigo IST-2004-004182 24/114