Does a metal roof make rain fall noisy?

Due to our installation method, our roofs are soundproof. This is largely due to the fact that the roof has multiple layers under the exterior metal sheers, namely the membrane, shingles layer, plywood, rafters, insulation, and ceiling. Thus, you roof will not be any louder than a standard shingles roof. Often the case, it will actually be quieter than a shingles roof.