Thanks for writing and for your questions.
The Telerik Speech Recognition tools are something like a research project to identify the potential usage scenarios. We haven't done much since their release since the demand for such tools wasn't that big. As you may have already seen, we have a version of our Picture Gallery app using these tools which should be useful as a reference guide when integrating the tools into other apps.
Now directly to your questions:
1. These tools work exactly this way: they constantly listen for voice input and according to the commands you have defined, they execute them once the input is recognized.
2. Yes, when the Speech Recognition mechanism is enabled listening for commands it performs processing constantly which will surely consume battery power.
Let me know should you have additional questions here.
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