Audiogram of Everyday Sound Poster 24x36inch, Speech Banana, Waterproof, Show Frequency, Pitch and Ear Infomation The Audiogram LP Poster illustrates the intensity and frequency of everyday sounds and describes the level of possible hearing loss due to prolonged exposure at each zone. The LP (large posters) are printed on glossy plastic in bright, easy-to-see colors. The ink side is laminated to make the poster smear-proof and protect it from dirt and water. Dry- erase pens wipe off clean making the posters great for office, clinic, and classroom.