Welcome to the Science Buddies test tone set, available exclusively
from http://www.sciencebuddies.org. Each track contains a different
frequency. The file name will tell you what frequency is inside - each
file lasts 30 seconds.

If you are playing these files through speakers or headphones, please be
careful to keep the volume at a safe level. Different frequencies will
sound louder or softer than others even if you have the volume set to
potentially harmful levels. Loud sounds, even if you cannot hear them
clearly, can hurt your ears. Your younger siblings may be able to hear
higher frequencies than you can, and your pets can hear even higher ones.
When you are working with these tones, please think about who else might
be within earshot.

These files are in 44KHz Microsoft WAV format - an industry standard. You
can play them directly with most computer media players, or use your
favorite CD making software to make an audio CD from them.

Enjoy using these for your experiments. Any questions? Email us at
scibuddy@sciencebuddies.org