I did replace the front right caliper pretty recently, as the first time it happened, 2nd time it happened it was both front. This would be about the 4th time this has happened. I got it AAA to the shop, I was looking at the brake hose issues, and that’s the next cheapest option. I also seen that a flooded brake booster could cause that. Thanks for the insight jsdirt!
My understanding is a properly setup "J pipe" will eliminate the resonate'n but, I don't understand the math to it.
Also more accurately known as a Helmholtz resonator.