1. Visit this web site https://www.szynalski.com/tone-generator/ to access pure tones. Read the warning on the right side carefully. Set the volume at 50% and frequency at 1,000 Hz. Play the sound. You can adjust the volume as you listen. Do not turn up the volume to an uncomfortable level. For the rest of the exercise on yourself, do not go too far above this level. This is particularly important for high frequencies, even if you cannot hear much.
2. Set the frequency at 8,000 Hz. Note that you can edit the frequency by clicking on the frequency number. Play the tone. Stop after 2 s (seconds). You should be able to hear this.
3. Set the frequency at 9,000 Hz. Play the tone. Stop after 2 s (seconds).
4. Repeat the process with an increment of 1,000 Hz until you cannot hear the tone any longer. Record the highest frequency you can hear.

Finding the Highest Frequency Another person can hear

1. Repeat the procedure for another person who is at least 50 years old. Make sure that you do not go too far above the level the person is comfortable at 1,000 Hz. If the person cannot hear 8,000 Hz, go back to 1,000 Hz and repeat the process with an increment of 1,000 Hz from there.
2. Record the highest frequency that person can hear.

In a paragraph, state the highest frequency you can hear. Describe who the other person is (relationship to you such as your grandfather and your aunt), that person's age, and the highest frequency that person can hear.

In a second paragraph, explain why the highest frequency you can hear and the highest frequency the other person can hear are different. Make sure you consider what you have learned in the module.