I will hazard the guess that some pocket change or some other such small object was in the clothes loaded at some point and it got into the felt gasket at the back of the drum to make your “rasping” noise effect. It may have then worked its way thru some how and dropped into the inside of the machine. Only way to know for sure is to disassemble and find said object in bottom of machine somewhere or possibly subject yourself to a greater mystery if you don’t find any such object inside somewhere.