Glossary of hearing aid terminology Word, Acronym Definition BTE Behind‐the‐Ear hearing aids are used for all types of hearing loss – from mild to profound. Most offer directional microphones for improved clarity of speech in noisy situations. Behind‐the‐Ear aids fit behind or on top of the ear. An ear hook attached to tube running from the aid to the ear canal keeps the device in place. BTE – Slim‐Tubing Slim‐Tubing Behind‐the‐Ear aids are also known as mini BTE, an open BTE or an open ear fit hearing aid. Designed for high‐frequency hearing loss, it’s best for mild through moderate hearing loss. It is the hearing aid of choice because it allows for more natural sound for high‐frequency loss. It’s discreet fit and size has made slim‐tubing BTE very popular. Because of flexibility and ease of upgrade, BTEs are the most common hearing aid for children. BTE – Traditional Traditional Behind‐the‐Ear hearing aids use thicker tubing for more stability and power. They’re most appropriate for profound hearing loss. The three‐piece design can be difficult for older users to manipulate and require more detailed ear molds. Because the desired sound waves travel through thicker tubing, output at the eardrum can be affected. CC Custom‐Canal hearing aids are another name for ITC, but used less often. CIC Completely‐in‐the‐Canal hearing aids are made to fit fully in the ear canal and are minimally visible. Due to CIC’s small size, only one microphone can be installed, but the deep fit provides some natural directionality that’s lacking in larger hearing aids. The benefits of CICs is not just cosmetic. Because the microphones are better hidden in the ear, there is less wind noise distraction, and the devices allow for easier wearing of head gear such as helmets. They’re designed for mild to severe hearing loss. Extended Wear The InSound Medical Lyric hearing device can be worn continuously in the ear canal 24 hours a day for up to 4 months. There have been two versions of the Lyric device; the original model, referred to as Lyric 1, released in January 2007, and the current model, Lyric 2, released in 2012. More than half (55%) of patients who have opted for Lyric are new to hearing devices, which suggests that Lyric is tapping into those who have hearing loss but do not want/use hearing devices. The patients who try Lyric are new to the market, so the device provides a significant opportunity for practice growth. No surgery or anesthesia is required. ITC In‐the‐Canal hearing aids are smaller than an ITE and very discreet. The ITC fits partly into the ear canal. Due to its small size, the ITC comes with the option of remote control accessories for easy adjustment. Best for people with mild to moderate hearing loss. ITE In‐the‐Ear (ITE) hearing aids are also known as custom hearing aids. They are individually manufactured to fit a person’s ear, fitting into the outer ear bowl. This small device is designed to match the wearer’s skin tone. It is discreet, yet offers many features and options that smaller hearing aids can’t. Best for people with mild to moderately severe hearing loss. ITE Half‐Shell Half‐shell hearing aids are just a smaller version of ITE aids. They are best for individuals who have difficulty putting a full ITE in their ear due to the anatomy of the ear. Two microphone versions are preferred over single mic versions for improved directionality and noise reduction. Extended Wear It is placed in the ear canal and can be worn 24 hours a day, seven days a week, for up to 4 months at a time. No surgery or anesthesia is required. 22