A hearing aid is a specialized device designed to enhance hearing by producing sound audible to an individual with hearing impairment. Hearing aids are typically classified as therapeutic medical devices in many countries and usually governed by the various regulations set out by the National Health Services (NHS). Hearing aids work by amplifying sounds so that the wearer can hear them. They come in various forms and are used for a variety of purposes. Some are purely functional; others are more aesthetic. Some have additional functions such as speech recognition or help with tone control.
The human ear contains tiny sensory cells that detect small amounts of sound. Over time these cells become damaged or become degenerated, and this is where the hearing process starts. The brain processes sound waves via the nerves. In some instances, these nerves may get damaged by outside influences such as loud noises or foreign objects impacting them. Hearing aids from hearing aids adelaide help bypass these damaged nerves and let the brain convey sound signals directly to the eardrum, bypassing the damaged sensory cells.
Some types of hearing aids may help decrease background noise, help individuals listen more attentively to the conversation or even help individuals comprehend speech in conversations. When using a hearing aid to increase listening attentiveness, it is important to note any sounds in the surrounding environment. It is often helpful to close your eyes when listening to music on the radio or on the internet to help block out background noise. This technique is also useful when using digital hearing aids as well. There are several ways to alter the level of background noise a person is exposed to, and some of these include:
Behind-the-ear: This type of hearing aids is generally fitted to the top of the ear, covering all auditory nerve endings. They are most often powered by batteries, although some models require nothing more than a standard earplug. These types of hearing aids have the advantage of being very easy to adjust. BTE hearing aids used for behind-the-ear are made of hard plastic, which tends to conform to the shape of the top of the ear, helping provide a very natural look.
Soft Plastic: The soft plastic hearing aid is usually only worn in very few circumstances and is not recommended for everyone. These hearing aids, while having almost no electrical power source, are still fairly effective in blocking out background noise. These hearing aids may tend to slip out of place if not worn properly, so a great deal of care must be practised when wearing this type of ear hearing aid. Most of these are powered by earplugs of the same hard plastic used in the behind-the-ear hearing aid.
These three types of aids in hcaudiology.com.au are all effective at blocking out background noise, but there are some situations where they will not work. If an audiologist feels that your hearing aid requires more fine-tuning than these three options, your hearing instrument will be further examined. It may be necessary to completely change the device or even get a completely new unit manufactured. Your audiologist is the person who can best advise you about the hearing aids that are right for your particular situation.