Can you be very specific with me about what this means: “Language is English, closest to American dialect I believe, although neither of the speakers are native Americans.” Where are the speakers from and what is their native language and why did you choose them for evaluating accuracy levels for English speech recognition?
The reason I ask is because it’s unusual to say that a non-native speaker has a native dialect or close to one — that’s an exceedingly unusual outcome in language learning. As an example, I speak German as a non-native speaker and the regional accent of German that I speak is probably closest to the Northwestern German pronunciation, but no one from that region would say that I had a Northwestern German dialect because my US accent is at least as strong as a regional German accent in my speech. I would not be a good test subject for evaluating accuracy of German speech recognition.