If you use the bot's embed code it will automatically add speech recognition in the WebChatBotListener createBox() function.
To add speech recogntion yourself you can call the,
SDK.startSpeechRecognition();
To start speech recognition, and,
SDK.stopSpeechRecognition();
to stop speech recognition.
Use all need to call,
SDK.registerSpeechRecognition(input, button);
To register for the speech events.
Speech recognition is only supported in browsers that support HTML5 Speech, such as Chrome.
See,
https://www.botlibre.com/forum-post?id=11672958
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