I don't know about your intended fixtures.
Many years ago, when these were new, in conference rooms, other spaces, we used a remote transformer large enough for a chain of fixtures with the lamp only. then no noise in the room.
the wire sizes varied depending on the number of fixtures, often quite large. Code: like any junction box, access to the transformer needed to be maintained,
later they started making lamps with integral ballasts, transformers,
like anything else, ballasts and dimmers come good/better/best, more/less/no perceptible noise
Many years ago, when these were new, in conference rooms, other spaces, we used a remote transformer large enough for a chain of fixtures with the lamp only. then no noise in the room.
the wire sizes varied depending on the number of fixtures, often quite large. Code: like any junction box, access to the transformer needed to be maintained,
later they started making lamps with integral ballasts, transformers,
like anything else, ballasts and dimmers come good/better/best, more/less/no perceptible noise