![]() ![]() May be associated with tissue-causing disease, such as rheumatoid arthritis or lupus.īalance – A biological system that enables individuals to know where their bodies are in the environment and to maintain a desired position. Learn more about APD.Īutoimmune Hearing Loss – Hearing loss when one's immune system produces abnormal antibodies that react against the body's healthy tissues. This painless procedure involves attaching recording disks to the head to record electrical activity from the hearing nerve and brain stem.Īuditory Nerve – Eighth cranial nerve that connects the inner ear to the brain.Īuditory Perception – Ability to identify, interpret, and attach meaning to sound.Īuditory Processing Disorder (APD) – Inability of an individual with normal hearing and intelligence to differentiate, recognize, or understand sounds normally. Most audiologists have advanced doctorate degrees.Īuditory Brainstem Response (ABR) Test – Used to test the hearing of infants and young children, or to test the functioning of the hearing nerve. Audiologists use a variety of tests and procedures to assess hearing and balance function and to fit and dispense hearing aids and other assistive devices for hearing loss. Learn more about assistive listening devices.Īudiologist – A health care professional trained to evaluate hearing loss and related disorders, including balance (vestibular) disorders and tinnitus, and to rehabilitate people with hearing loss and related disorders. ![]() ![]() They look like this.A B C D E F G H I J K L M N O P Q R S T U V W X Y Z AĪcoustic Neuroma – A tumor, usually benign, which develops on the hearing and balance nerves and can cause gradual hearing loss, tinnitus, and dizziness.Īcquired Deafness – Loss of hearing that occurs or develops sometime in the course of a lifetime, but is not present at birth.Īmerican Sign Language (ASL) – Manual (sign) language with its own syntax and grammar used primarily by people who are deaf.Īssistive Devices – Tools and devices such as alarms, alerting devices, or FM systems used to help people hear to perform daily actions, tasks, and activities. You can also purchase a cable TV isolation transformers at most stores, or online here. If the hum is caused from the cable TV connection, you can ask your cable company for an isolating transformer for the cable. The offending piece of equipment will show itself when you follow this procedure. Reconnect each source again, one at a time and listen for the hum to return. ![]() Ground loops are common when video equipment is connected. If steps 1 and 2 were “no”, but removing all inputs eliminates the hum, it is likely you have what is called a ground loop. Once determined you can either replace that piece of gear or read our extended hum fixing guide for further instructions. Remove that piece from the receiver, amplifier, or integrated and the system hum should now be gone. If the answers are yes to questions one and two, it’s likely that one of your sources (like a CD player, turntable, video feed), is the source of hum. Only the speaker cables, loudspeakers, and AC plug powering the unit should now be connected. Remove the cables connecting the receiver, power amplifier, or device powering your speakers. Once you’ve identified which type of hum it is, the next three steps are to narrow down where the hum is coming from.ĭoes the hum in your speakers go up and down with volume? Take note so we can come back to this answer.ĭoes the hum go away? Is it only audible with one input selected, or all of them? To determine which of these you have, listen to the two examples.Ħ0Hz hum caused by close proximity to other equipment or cables problems:ġ20Hz hum/buzz typical of ground loop problems. There are two basic types: 120Hz buzz, typically caused by ground loops, and 60Hz hum, typically a result of poor shielding, cable problems, or close proximity to strong magnetic fields. If your stereo or video system has a hum or buzz coming from the loudspeakers, there are several easy steps you can take to discover what the cause and cure will be.įirst, you should determine the type of hum you are dealing with. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |