simple Hearing test
Hearing demands several parts of our body to work properly, however you may not need to find the source of the hearing problem so as to solve it. Hearing aid devices manage to solve the vast majority of cases just by having proper calibration.
This video in youtube may explain further about your hearing.
Now, call your friends, family and neighbours ! Then we can begin this test, because I must WARN you now that This test I provide is mostly and solely for FUN. You mustn't draw any clinical conclusions out of it! If you're hearing impaired, I suggest you visit your doctor and ask him further assistance. Now let us have Fun!
Hearing aids have two fundamental parts: microphone and speaker. Sometimes these are referred by other names so as to be more sophisticated or accurate to the technology they're implemented. The concept is: microphone works as an artificial ear and "reads" sound information, then "parts" of this very sound are amplified (incremented, enhanced) and outputed through the speaker that is closely placed to the person's Ear. These speakers are very similar to the ones you find in televisions to output sound. Medical speakers are usually more expensive due to their much higher realiability. Why ? Suppose you work in a factory and you can't hear an alarm - you can cause much trouble to you and colleagues. If your television breakes, you may miss your favorite tv programme, however a hearing aid can prevent you from working, taking care of family memebers, etc.
How do we know which part of the sound to amplify, increase ? And which portion to leave as it is ?
We may perform an Audiometry in a clinic or hospital alongside a Professional that could be an especialized physician such as a Otolaryngologist or a speech therapist. You'll hear an unusual sound that may resemble a beep or a whistle - It's a TONE.
Tone is a single frequency pitch, an isolated portion of the sound. When we put frequencies together, we have Sound - all sound we hear: cars, birds, music, etc. But so as to understand our hearing shortfalls we test one isolated frequency at a time. If you've seen the previous Youtube video, you remember that each isolated frequency estimulates one portion of the Cochlea (the snail like structure). The upmost part, the minimal radius one in the spiral, is activated by the lowest frequencies we hear. If we start going down following the spiral or snail we get to nervs activated by each time higher frequencies. The bottom or last portion of the spiral is activated by the highest frequencies we hear.
Fine! Now, where do we start ?