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The speed of sound decreases when as the air temperature cools What would this due to the frequency of sound produced by a band instrument?
Wiki User
∙ 14y ago
As air warms up the sound wave will travel faster. The speed of sound in air depends upon the
temperature. The warmer the temp., the faster the sound moves.
As far as the pitch goes, I think it must depend on the instrument. My guitar goes flat as it gets
warm because the strings expand slightly and become longer. In a wind instrument, as the wave
travels faster in the instrument, the frequency will increase making the instrument go sharp. The
speed of sound is equal to frequency times wavelength, v = f L. The wavelength is determined by
the physical size of the instrument and is fixed. So, if velocity increases, and L is fixed,
frequency must increase to balance the equation. The higher the frequency, the higher the pitch. So,
I guess strings go flat, woodwinds, and brasses get sharp, and percussion depends on the type of
instrument, how the sound is physically produced, and what material the sound must travel through.
Wiki User
∙ 14y ago
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