Reddit mentions of AMERIMAX HOME PRODUCTS 5402000060 Mill Aluminum Rain Diverter

I have a sound problem I need to fix.

I live in an older rental house with single pane windows and no rain gutters, and there's a valley in the roof right above my bedroom window. When it rains at night, half the roof drains off in a single heavy stream onto the concrete driveway three feet from my head. It sounds like someone is up there with a garden hose on full blast. A lot like this.

I'm a heavy sleeper, and the noise last night was enough to wake me up and keep me that way for long time. I resorted to putting a pumpkin in the stream hoping it might break it up at about 3 a.m. last night. It didn't really help.

I rent the house, so I'm not in a position to install a gutter system. I asked the landlord for permission to install a rain diverter, but I'd like a quick - if less permanent solution - to save my sanity in the meantime.

I'm thinking of building a ramp of sorts, so the water lands on an angled surface rather than onto the flat concrete, kinda like this. My main concern is that the panel the water lands on will effectively be a drum, amplifying the sound rather than reducing it.

Any ideas on something to smooth the water's transition between free fall and concrete driveway that doesn't create additional sound?