ASA/ANSI S3.47-2014 (R2023): Hearing Assistance Devices
You are sitting in a packed auditorium. A speaker steps to the podium, and around you, the audience settles into silence. For someone with hearing…
ASA/ANSI S3.46-2013 (R2023): Hearing Aids
Before modern hearing aids, people in the 13th century with hearing loss were using hollowed out horns of animals, such as cows and rams. It…