Hearing Knowledges
How we hear？
The ear is a precious and delicate organ. It is made up of three parts: the outer ear, the middle ear, and the inner ear. Sound waves are gathered by the Outer Ear, move down the ear canal and strike the eardrum, causing it to vibrate. The drum is connected to three tiny bones, which are housed in the Middle Ear. The third bone acts as a piston, moving in a small opening at the start of the Inner Ear. This movement sets up waves in the fluid of the Inner Ear. These waves, like a swell in the ocean, move over tiny hairs that stick out of nerve cells lining the Inner Ear. As these hair cells move they generate nerve impulses. The nerve impulses are then carried along nerve fibres to the brain that reads that nerve impulses as " sound".
What is Hearing Loss?
The hearing level (HL) is a quantified measure of “normal” hearing in decibels (dB). A decrease in hearing sensitivity is indicated by larger values of hearing level, thus higher dB indicating worse hearing ability. Normal human ear can respond to sounds that are very faint (i.e. less that 25 dB (HL)). Otherwise, the patient should suffer from hearing loss. Degree of hearing loss refers to the severity of the loss. There are typically five broad categories. The numbers are representative of the patient's softest intensity that sound is perceived.
There are two types of hearing loss: congenital or acquired. If a hearing loss is congenital, it is present at birth, associated with the birth process, or to have developed in the first few days of life. In contrast, acquired hearing loss represent the hearing disability has not present at birth but developed later, either during childhood or adulthood.
Hearing loss can also be classified as either pre-lingual or post-lingual. A pre-lingual hearing loss occurs before the acquisition of language and speech. A post-lingual hearing loss is one occurring after developing a first language.
What are the common symptoms of hearing loss?
Common symptoms of hearing loss include: difficulty in hearing at public gatherings or group conversations, missing everyday auditory cues such as a ringing telephone or doorbell, feeling like people are mumbling, turning up the telephone louder than others like it, increasing difficulty in hearing high-pitched sounds, ringing in the ears, etc.
Do I have to see a doctor first?
Just call our hearing & speech centre for an appointment.
Our hearing and speech therapy centre is formed by a strong team of experienced hearing professionals, speech therapists, and ENT specialists to provide a one-stop hearing & speech solution. We can arrange a hearing test and evaluation for you and suggest the best hearing aids, its uses, care and fitting. If follow-up action is recommended after the test, our ENT doctor may help and provide further treatment.
Our services include hearing test (audiological assessment) evaluation, hearing aid consultation, recommendation and fitting, hearing rehabilitation, hearing aid products & accessories, custom earmolds, audiology & speech therapy services, and relevant professional counseling services.
Can hearing aids make my hearing worse?
Hearing aids do not make your hearing worse. In fact, wearing hearing aids trends to keep your hearing system fit and healthy and prevents the effects of auditory deprivation on the brain.
If you need a professional hearing aids prescription or hearing therapy services, please call us for an appointment.
For more details：
What is a Hearing Aid?
Hearing Aids Prescription
Hearing Aid Accessories
Hearing Aids Styles
Hearing Aids Types
Hearing Test and Assessmente
Hearing Knowledges
Hearing Aids FAQ
Hearing Aids Glossary
Other Hearing and Speech Services
Contact:
HK Hearing & Speech Centre
Rm 02, 5/F., Kai Seng Commerical Centre,
4-6 Hankow Road, TST Kln, HK
(near Kowloon Hotel)
Tel: (852) 3100 0555
Fax: (852) 3100 0556
Email: info@hkhearingspeech.com
Website: HKHearingSpeech.com