The narcotic lowers the victim's inhibitions while dulling the pain of the vampire's bite. The colour is reddish brown and the wood is abrasive, dulling tools rapidly. Tin-plated steel is chromium-plated to prevent dulling of the surface due to oxidation of tin. This process realigns the edge, correcting for dulling causes such as a rolled edge. Finally, sound absorption can cause high frequencies to be rolled off, dulling the sound further. The custom of tattooing and dulling of teeth have also become less prevalent. There is nothing more dulling than hours spent mindlessly going over finger patterns. To achieve this, the luminance signal must be low-pass filtered, dulling the image.