National Hearing Conservation Association - This professional association seeks to prevent hearing loss due to noise and other environmental factors in all sectors of society. WHO Guidelines on Community Noise - The World Health Organization defines community noise as that which occurs from outside the industrial workplace. Abelard: Loud Music and Hearing Damage - Provides information on the relationship between loud noise and ear damage with particular reference to young people and loud music. Hearing Education and Awareness for Rockers - H.E.A.R. is a non-profit organization dedicated to raising awareness of the real dangers of repeated exposure to excessive noise levels which can lead to permanent hearing loss and tinnitus. Sound Advice - Provides practical guidelines on the control of noise at work, in music and entertainment. Dangerous Decibels - Public health campaign designed to reduce the incidence and prevalence of noise induced hearing loss and tinnitus by educating children and changing their attitudes and behavior. Method of ISO 1999 - Provides a facility to enable the user to compute their likely hearing loss due to level of noise and years of exposure.