Possible Duplicate:
How do I stop the dripping noise from my gutters?
I have metal downspouts that come down from by gutters. One of them happens to be right by my bedroom window. When the rain is just right this downspout will often make an extremely loud pinging sound when water is coming down slowly (think someone hitting a coffee can with a spoon ever 2 seconds). For some reason this rhythmic sound seems to wake me up and then drive me mad.
Has anyone else had this problem and found a good solution? I tried stuffing rocks up the down spout in the hopes that they would quiet things down. This works for a short time, but every big storm they seem to wash away. Suggestions?
FYI - the downspout comes down perpendicular to the ground and then angles out 135 degrees from perpendicular.