A bugle is simply a coiled length of pipe, without slides or valves. One plays d

Question

A bugle is simply a coiled length of pipe, without slides or valves. One plays different notes on a bugle by buzzing ones lips at different frequencies.

a. How does this change the pitch(frequency) of the sound the bugle makes?

b. The bugle can play only certain pitches and not others (for example think of the piece "Taps" which is entirely cunstructed of only four different pitches). What are these allowed pitches, and why are other pitches impossible.

c. Imagine that a certain bugle plays in C, so that the pitches in "Taps" are low G (196 Hz), middle C (261 Hz), E (329 Hz), and G (392 Hz). How long would this bugle be if uncoiled?

Hint: Is the bugle effectively a tube with two open ends or a tube with one open end and one closed end? Think about the implications of either model. How could you get the pitches listed if the bugle is open at one end and closed at the other.

Explanation / Answer

a ) A bugle has no valves so there is no external agent to vary the frequency. The only way the frequency of its output sound can be varied is by the player himself. Also only resonant frequencies can be played on the bugle which is a tube with open ends . So only fixed number of frequencies can be played on the bugle .

b)same reason..

c) formula .. just google..

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