The noise info presented in the FAQ is pretty useless - noise from conventional wind turbines depends on wind speed, hub height and distance - saying that the level from the AWT is "consistent with conventional wind turbines" is meaningless.
It may be that they haven't done any noise testing at this stage (and the IEC 61400-11 standard for wind turbine noise testing is really not applicable to the AWT configuration) but they would have been better off just saying something like "we'll get back to you on that" rather than setting up expectations that might turn out to be unrealistic.