I think the only voice recognition thing I've tried recently is the google search one which, overall, has worked quite well when I've played with it.

I've just tried to see what it made of "Where is Dwygyfylchi". The suggestions or the place I've had are:

Duke Of Elsie
Jubilee
Google Keep
The galaxy
Djibouti
Doing a Valkyrie!

OK my pronunciation may not be the best but I'm baffled as to why each attempt has led to so different suggestions as these.

Welsh place names I did manage in this play include Llanberis, Capel Curig, Bethesda, Dolwyddelan, Betws Yn Rhos (recognised as "and" instead of "Yn" but the search text asks "did I mean .. Yn .." and Bryn Y Maen.

Henryd is another puzzle. I've tried this a few times with consistent results. The "where is" query responds with Henryhd Falls in S Wales. When I modify my question to "Where in Conwy is Henryd", it decides I'm asking about "Henrik".