What is similar -- and what is different -- when you hear different instruments play the same melody?
The lowest frequency (and the longest wavelength) is known as the fundamental frequency. Remember,
The pitch of a sound is determined by this fundamental frequency, the lowest frequency that is present.
Changing the pitch usually means changing the length of a string or a pipe or a column of air.
You can explore these ideas of fundamental frequency and harmonic content in the Sound Module by clicking below.
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(C) 2003, Doug Davis; all rights reserved