The inability to hear speech and other sounds can occur in any individual, regardless of race, gender or age. In the United States alone, an estimated 28 million people have some form of hearing impairment, and more than a million school-aged children have a hearing loss that can significantly impact speech/language development and education. Hearing loss can be temporary or permanent, mild or profound. Fortunately, in most cases, something can be done to improve the hearing impaired person's ability to communicate. For many, the purchase of a hearing aid is the first step in rehabilitating their hearing and reconnecting with the world around them.
HOW WE HEAR
The ear has three main parts or sections - the outer ear, middle ear and inner ear. Each section has a specific function that allows sound waves that enter the ear to be transformed into electrical impulses that the brain can understand. The outer ear collects sound waves and directs them to the middle ear. The middle ear then amplifies the sound and transmits it to the inner ear. The inner ear converts the sound vibrations into electrical impulses that travel along the auditory nerve to the brain.