Lake Forest Audiology
You Audiology Specialists
Welcome to Lake Forest Hospital Audiology
Lake Forest Hospitals Audiology Department specializes in evaluating and treating individuals with hearing loss and offers a full range of audiological services. The Audiology Department also provides evaluation and treatment for patients with dizziness and balance disorders.
Digital Hearing Devices and How They Work
A digital hearing aid is a device that receives sound and breaks the sound waves into minute units and amplifies the sound. The main difference between the old analog hearing aid and digital hearing aid is that while analog hearing aid magnifies the sound to amplify sounds, digital hearing aid breaks the sounds waves and amplifies it.
Generally, the digital hearing aids come in four styles:
- In-the-ear hearing aids
- Behind-the-ear hearing aids
- Canal aids
- Body aids
While in-the-ear hearing aids are fixed in the outer ear, the behind-the-ear hearing aids fit behind the ear connecting to a plastic ear mould that fits inside the outer ear.
Canal aids fit into the ear canal. Body aids are for those who are affected by profound hearing loss and it is attached to the pocket or belt that is connected to the ear by wire. How Do Digital hearing aids Work? Digital hearing aids convert the analog waveform into a string of numbers for processing. It receives the continuous sound wave and splits it into very small discrete bits of data. This process is called ‘digitizing the sound waves’. Most of the digital hearing aids follow this process to produce superior sound quality.
The latest digital hearing aids have sophisticated technology to amplify even the softest sounds. While processing the sound wave, this modern equipment filters the unwanted noises. Some of the modern digital hearing aids come with in-built intelligence that helps the hearing impaired people to pick up any sound signals. The algorithms written into these digital hearing aids allow the users to customize them according to their requirements.
Digital hearing aids have flexible gain processing schemes.
This increases the audibility of the sounds without any irritating noises. Digital signal processing in these equipments provides better hearing by inputting signal-specific band dependence, an increased number of channels, and lower compression thresholds. Some digital hearing aids use compression processing which leads to increased clarity of sounds and decreased environmental noises.
Modern digital hearing aids use advanced feedback reduction schemes to control the feedback when using the equipment. It filters and considerably reduces the feedback, giving comfort of use for the user. Digital speech enhancement systems used in digital hearing aids sharply increases the intensity of the sound.
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