You know, I am actually begining to think that this may be a very small screw up. I am not sure of the accent or dialect here but if you listen to the 2.wav (clear) and the 3.wav (unclear) they are almost identical? Especially if compared to the your#3.wav where the three is clear in its diction.I am forced to utilize pilot responses (for verification) because of this one single .wav file. I could remove the voice set altogether, which I would hate to do as there are so few (yes, I am working on my own for upload).Question: would it be possible to hack the your#3.wav to produce a better 3.wav? I dont have any software to do that (XPSP1, do I?) but can it be done with a freeware editor of some type??just asking, thanks

Mike,The 2 and 3 sound pretty distinct to me, but then I've been listening to the wavs for a year.

anyone else? or should I go in for a hearing test?

Mike,As '2' and '3' are the most-frequently confused numbers in real-world RT transmissions I checked this out when you first posted but came to the same conclusion as Scott. I've just listened to them again and, to my ears anyway, they're sufficiently different to not be confused with each other. But maybe I'm just used to listening to accented-English RT. ;) Pete