Led triggers buzz when turned on

[Pingel85]

I have 4 rooms (commercial building) where I installed high quality Lithonia 2x2 fixtures. There are 8 fixtures in each room, all on 0-10v dimmers and have occ sensors tied in. When I turn on the lights in each room, I get a distinct buzz for approximately 2 seconds and then it disappears. Lights function and dim correctly. If I turn the lights on dimmed, I do not get this buzzing, but can hear it if I fluctuate between 10% and 100% quickly.

I have installed this setup many times before and never noticed it before, but this is plenty loud. Tech support was no help, is this just inrush current on these drivers or am I missing something? Turning to the gj braintrust for help

 

[cybrdyke]

Is the buzz from the lights or the dimmer?

 

[Pingel85]

Is the buzz from the lights or the dimmer?

It sounds like the lights, it’s somewhere in the ceiling. I can’t pinpoint it because it lasts for such a short duration and echos through the room

 

[wyliesdiesels]

Could be coming from the LED driver

 

[Copymutt]

Suspect loose or undampened device/driver/board in one or more of the units. Free decibel phone meter might require someone in the high bay on ladder or man lift to locate it. Once located hopefully simple cushioning will stop it. Probably using the fixture as a sound board greatly amplifying a minor oscillation.
PS I know a little about everything and it has served me well.