Agreed. The classic star ratchet system has two moving ratchets and two springs, while the new EXP system has one ratchet fixed into the hub body.
When the freehub is spinning:
In the classic ratchet system, the ratchet is flexible, and there is a gap between the ratchet and the hub body, so vibration is not transferred to the hub body.
In the EXP-style ratchet system, vibration is transferred directly to the hub body, causing resonance, which makes the sound louder.
That's why, even though the DT Swiss 350 and 240 EXP are both from DT Swiss, the 240 EXP sounds louder and sharper than the DT Swiss 350.
Because H-Works shares the same ratchet system as the DT Swiss 350, their sound is similar — low and deep.
The Elitewheels hub's ratchet system is similar to the 240 EXP's, so they sound similar, but Elitewheels sounds even louder and sharper than the 240 EXP.
I created an image so we can see the difference more clearly.

Regarding the sound, I guess there's the general difference between the "classic" two ratchet set, like DT Swiss Ratchet, there's also already a little difference in sound to the EXP system, but if I understood correct, in the Elitewheels, the ratchet is already part of the freehub?