How can I do voice recognition with ARM based microcontrollers?

Hi

I need to do some voice recognition with ARM based microcontrollers. I like to have a system with about 20 to 50 words dictionary and when user says those words the system can recognize and do something in order to them.

So, is there any  library of facility for that?

How can I do it and I should search what keywords to find any solution?

Thanks in advanced!

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