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Hi Swapnil,
There could be several things incorrect if you are not getting match events.
The first thing to note is that matching is more accurate with longer phrases. If you use a phrase such as "Hello" the search engine may have difficulty matching as it less phonemes to work with than a longer phrases. Try changing your phrases to longer sentences, for example, I find a sentence such as "Any purchase can be returned within fourteen days" works well. Using a threshold of 10 or lower is perfect for testing.
If you find yourself still not receiving matches after switching to longer phrases, the next thing to understand is that each language pack is designed to work best with regional accents. So the US English pack works best with US English pronunciations, and UK English works with UK English pronunciations. If you are using English for testing, you could trying switching to UK or US English.
Beyond that you may have a system configuration error. Are you receiving a SPEECH_SEARCH_STARTED event? This would indicate that a speech search was submitted, but it may not indicate a successful start. If you do not receive a SPEECH_SEARCH_ERROR event then the system is correctly setup. If you have not already subscribed for error events, try subscribing for all events to ensure that no errors are encountered.
Regards,
Adrian.
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