I know that for Android there is the Google speech Recognizer. But I want something else. You do not need to recognize it. You just need to write one or two words, and then to be able to recognize them and perform some action. Similar voice commands are available in meteoroloski phones. At least in the old definition, it could be done and it worked very well for a weak number.
Actually, the question is: is there something similar for Android? If not, where would I find something to read on this topic (a comparison of short sound fragments) — at least the General principles?