![]() The microphone is built directly into the unit, and is often directional, allowing you to aim it in the direction of the sound source in order to pick up the signal most effectively. Personal amplifiers are essentially small FM systems used in smaller, more intimate settings where radio signals are less effective they are often used when watching television, traveling by car or spending time outdoors. ![]() The microphone is worn by the person speaking (or placed in close proximity to the sound source) and the signal is broadcast from the transmitter to the receiver, which is tuned to a specific frequency. They consist of a microphone, transmitter and receiver, and are used in a variety of public places such as classrooms, restaurants, movie theaters and churches. Some focus on amplifying speech, while others utilize computer programs to convert text to speech. Some of the different types include: FM SystemsįM systems rely on radio signals to transmit amplified sounds directly to your hearing aid. There are several different types of ALDs available, for both large facilities and personal use. What Types of Assistive Listening Devices Are Available? ALDs are useful in a number of situations, primarily those involving distance, poor acoustics and noisy backgrounds. Some ALDs are used in conjunction with hearing aids, while others work as standalone devices. ![]() This allows the person with the hearing impairment to hear more clearly. Unlike hearing aids, which amplify sounds, ALDs work by separating speech from background noise. Assistive listening devices (ALDs) are portable systems that help individuals with hearing loss communicate more effectively. ![]()
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