Spell "tent", spell "tamed" spell "taint". Every time I replay the noise I'm still unable to distinguish between these three possibilities. I'm not sure what you want me to spell.
The algorithm to convert my spoken letter to the letter that the game thinks I am guessing is wrong often enough to be annoying.
Lastly, it's too slow: I have to pause for several seconds between each guess.
The game worked for me. But the voice recognition of individual letters was abysmally slow / bad on my laptop. I guess it gives a better sense of how far back voice recognition is.
All the voice recognition packages I've used have a dedicated "spell this" mode, usually activated by a hot word like "spell" or similar. In the dedicated mode, my recollection is that one can use the phonetic alphabet (alpha, bravo, charlie, etc) in lieu of trying to get it to recognize the names of the letters, which are usually monosyllable and thus harder to pick up.
I haven't tried the system under discussion to know if it has such a mode or not.
Could benefit from using the word in a sentence. I could not understand what word it was trying to ask me to spell (and then it didn't help when the voice recognition of the letters was terrible and slow).
Experiment is the appropriate word. I found both understanding the speech synthesis for a single standalone out-of-context word to be impossible, and it was unable to understand clearly articulated single letters. Closed in frustration.
The algorithm to convert my spoken letter to the letter that the game thinks I am guessing is wrong often enough to be annoying.
Lastly, it's too slow: I have to pause for several seconds between each guess.