On This Page. Viral meningitis is the most common type of meningitis, an inflammation of the tissue that covers the brain and spinal cord. It is often less severe than bacterial meningitis, and most people get better on their own (without treatment).
Sound level calibration is a prerequisite to properly measuring hearing loss. Our hearing test is the only online hearing test we know of that offers you a way to calibrate your headphones or speakers, giving you the opportunity to reliably estimate your hearing loss. Use our test with confidence to confirm normal hearing, or a mild, moderate, or severe hearing loss. This test-like any other hearing test-requires a decent pair of headphones (good speakers will work too, although headphones are preferred), and a quiet environment.
At the end of a hearing test you may be told that you have normal hearing or a mild, moderate, severe or profound loss of hearing. The image below shows an example of an audiogram. Hearing loss is measured in decibels hearing level (dB HL).udiology & Speech Pathology. My name is Joan, your audiologist here at HearingDirect.com. The following is a guide to hearing that covers many of the questions I receive on a regular basis about all things hearing. I am constantly adding to the information featured here based on your feedback and questions.