There are many types of assistive listening devices (ALDs). For example, Frequency Modulation (FM) systems are one type of ALD. These need a person speaking, such as a teacher, to wear a microphone. The speaker's voice is then carried to the child's hearing aids, cochlear implant, or earphones. FM systems reduce background noise. They are often used in classrooms to help children with hearing loss hear their teachers. Other ALDs include:
- Infrared systems used with the television.
- Text messaging.
- Flashing and vibrating alarms.
- Telephones that make sounds louder.
Talk with your child's doctor for more information about ALDs.