EXERCISE III: The Auditory Senses
- Perceived
Loudness across the Frequency Spectrum
You will be using a really awesome hearing test from New South Wales College
in Australia.
1. Click on the link: http://www.phys.unsw.edu.au/jw/hearing.html
2. When you get there, scroll down to the red graphic. Humans
can hear from 20Hz to 20,000 (20K) Hz. This test will not explore the top
frequencies. We will do that in Part B. You will see those frequencies from
left to right. Up and down represents loudness in decibels.
3.Attach your headphones to the computer's headphone jack.
Open the audio properties, uncheck "mute" and turn the volume all
the way up.
4. Follow the instructions below the graph. Read them
carefully before beginning!!
5. Record your results by shading in the corresponding
squares on the data sheet.
- Hearing Loss at
High Frequencies
- Go to my website
under Anatomy
/ Web Links / Nervous System / Hearing Test
- Plug a set of
headphones into the computer.
- Open the Volume
controls on your computer and turn the volume down to about ¼.
- With the
headphones on, click on each of the tones from 8000 Hz to 22357 Hz.
Adjust the volume as necessary.
- Record the
highest frequency sound that you can hear with your left ear.
- Repeat the
process with the headphones turned to the right ear and record your
results.
- Answer the
follow up questions.