Many piano owners may think this way “does moving piano could affect piano sound quality”. Actually moving piano does not affect sound quality of piano unless something wrong happen during the moving process. Actually a piano is made of wood and steel there could be an element change especially wood sometimes would react on humidity and temperature. If this both elements of piano (wood and steel) occurs there could be change of your piano. There are a lot of causes why piano sometimes change sounds due to size of room and and its acoustics. Sometimes carpet absorbs sound, hardwood reflects sound. Sound reinforces in small spaces, seeming louder, and gets lost in larger spaces, seeming quieter. For more information the best way to do is ask your piano technicians or furniture piano makers.