The CListen class provides speech recognition support for your applications.

For a list of all members of this type, see CListen Members.

 

CListen provides two modes of speech recognition: Voice-Dictation and Voice-Command.

• Voice-Dictation

Allows end-users to dictate into the application memos, letters, reports, e-mail messages and other documents. To start the Voice-Dictation recognition, simply call the CListen.DictationStart method.

• Voice-Command

Allows end-users to give commands using voice input. With the Voice-Command, you can create a list containing voice commands, such as "Minimize Window", "Close Window" or "Send Email".

To create the voice command list, use one of the following properties: VoiceCmdList or VoiceCmdFile. To start the Voice-Command recognition, call the CListen.VoiceCmdStart method. Note that before starting the Voice-Command recognition, you must provide the list of commands that CListen will recognize by setting one of the following properties: VoiceCmdList, VoiceCmdFile.

When a phrase is recognized during the Voice-Dictation or the Voice-Command recognitions, the OnSpeechRecognition event is fired passing the text recognized.

Requirements

Namespace: TAPIEx

Assembly: TAPIEx.Net.Dll

See Also

CListen is compatible with Microsoft SAPI 4.0 or SAPI 5.1. [SAPI (Speech API) is the Microsoft standard class for Speech Recognition (SR) and Text-to-Speech (TTS) engines. ]

For SAPI 4.0, If your system have no SAPI 4.0 installed, please download the program from the Microsoft SAPI download page or from our web site download page.

For SAPI 5.1, which is the version shipped with Windows XP. Users of other Windows versions will need to install SAPI 5.1 first. SAPI 5.1 is available free of charge from the Microsoft web site: http://www.microsoft.com/speech/download/sdk51/ .

In order to use CListen, you also need to have a SR (Speech Recognition) engine installed on your computer. A number of these engines are available from different vendors. Microsoft, for example, offers a freely redistributable SR engine at Microsoft web site.

Support editions

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