A question about omnidirectional sirens

[clm 10 12]

Does the number of chopper ports on a omnidirectional siren have to be a multiple of the number of stator ports in order for the siren to be efficient?
For example, if you are designing a pneumatic, omnidirectional siren that has a prime number of chopper ports, for example seven, and you want to make it have fewer stator ports than seven to conserve air, would it be efficient to have 3? Or would you have to choose either seven or one stator ports.

[freebrickproductions]

You want the number of stator ports to match up with the number of blades on the chopper (chopper ports).

[DJ2226]

Okay, let's see. If it is fan forced with some type of blower, then using less ports on the stator allows more air for the others that are there. The stator doesn't have to have the same number of ports as the rotor, kinda like the rotating CLMs as they only have 4 ports on the stator of the 10 port chopper; the key to that is that the ports are spaced out correctly so they chop the air at the same time. If there is only one then spacing isn't an issue, like the 'bolt. If there is an impeller built into the rotor, then blocking some of the ports won't make it all that much louder.
This question has already been asked before. https://airraidsirens.com/forums/viewto ... king+ports