The symbol used to denote assistive listening systems. This symbol is an outline of an ear with a slash through it to identify that a room or venue is hearing-accessible.
When a “T” is added in the lower right-hand corner, it indicates a hearing loop.
In the United States, the symbol background is commonly blue.
From the Americans with Disabilities Act (ADA) Standards, “Section 703.7.2.4 Assistive Listening Systems. Assistive listening systems shall be identified by the International Symbol of Access for Hearing Loss complying with Figure 703.7.2.4.”
