The Challenge: Make musical instruments
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How is an instrument
To tune any two instruments,
the sound waves from both of them must be at the same frequency. If the
frequencies differ very slightly, the two sound waves interfere, making
another sound wave that undulates in volume or 'beats'. The beat frequency
is the number of volume undulations heard per second. It is found by subtracting
the lower frequency from the higher one. When two instruments are in tune,
the beat frequency should be zero. This is an extremely useful tool for
tuning instruments accurately by ear.
people can usually tell whether an instrument is in tune or not without
knowing the underlying science.
The Rough Science band