They were big on sound testing at most contests the 1st year, not so much last year. It's up to the CD whether they sound test on the ground. You can always pass the sound test by reducing the ATV on the throttle. Then after you pass the test, increase your ATV and fly. You will still be judged in the air for loudness, but the score is very subjective. There is very little relationship of ground sound tests and perceived sound while flying.

What engine, muffler and prop are you planning to run? Folks can guestimate your sound score.