I am attempting to get basic recognition of letters and numbers with System.Speech rather than words or sentences. I am using the code sample from the top answer on this post. Here are some of the odd results I am seeing:
(spoken, recognized)
ABC123, BB sheet 123
7N2591, It had been 2591
374SXQ, Greet heaven or dashes at queue
51763, Hide one chat and had three
XYZ709, At YE having your own nine
Are there different grammar sets, or an approach with the GrammarBuilder that would allow me to limit recognition to only listen for a series of letters and numbers?