Nasty slap echo


When i clap my hands it sounds like the ricochet sound from a WW2 documentary. I have panels on 1st reflection points but doesn't help. My room is 15x8x22, which are "supposed" to be good dimensions. I did have them drop the crown molding down 4 inches to put rope lighting up there. Was wondering if that is causing the problem. How harmful is this slap echo to the sound? Any suggestions?
streetdaddy
Agree with above posters that it needs to be addressed and can be mostly with furniture and etc. I am using bookshelves, thick carpet, rugs on the wall, fake plants, stuffed animals, basically anything to absorb slap echo. I too have walked around clapping or yelling profanities to reveal problem areas. Eliminating the reverb is especially important with rock and pop IMO due congested and compressed nature of such. Because that's mainly the crap I listen to, I have found new life in mediocre mainstream music.
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here are some pics of the room....[IMG]http://i972.photobucket.com/albums/ae206/streetdaddy/DSC_2500.jpg[/IMG]