Creating a Musical Instrument
By Jessica Tseng
Introduction: In this experiment, we attempt to make a musical instrument. My group decided to make a wind instrument, which is an instrument that requires a player to blow in it, in order to have sound. There are some examples of wind instrument like, trumpet, oboe, tuba, etc... In this experiment, we’re going to explain how our wind instrument was made, and how the instrument changes in frequency by blowing in it. For the materials, we used the straw to become our mouthpiece, and with a washing machine pipe to make the sound better, and to become the tube of our instrument. We will test different lengths of the instrument, and measure any difference in frequency, or pitch, between the lengths.
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I predict that, if the length gets longer, then the sound will become lower. The reasons for that is because the frequency that vibrates in the air affect the pitch that the instrument made. The frequency of the air vibration depends on the length and the size of the tube. When the instrument gets bigger, then the sound will get deeper because when the instrument gets bigger, the length and the size will increase, and the air will vibrate in the tube longer, which is the wavelength. When the wavelength become longer, then the frequency will get lower, and also the pitch will gets lower too. There will be waves vibrating in the tube because when you blow it, you gave the energy to the tube, and the energy makes the vibration in the tube, finally, the sound will come out, and you will hear a pitch. This is a process of making a sound using a wind instrument. This experiment was similar to the last experiment, which is the sound experiment, last time I tested out a string instrument. In that experiment, we found out, when we press the string more shorter, then the frequency will become higher. Compare to this and the last experiment, it might had the similar result because most of the instruments use the same process to make sound, so the second thing I predict is that the result might be simillar with the last experiment because it both needs to increase or decrease the length of the
The clarinet is a woodwind instrament consisting of a cylindrical wood, metal, or ebonite pipe with a bell-shaped opening at one end and a mouthpiece at the other end, to which a thin reed is attached. The clarinet has five different sections, the mouthpiece, the barrel, the upper section, the lower section, and the bell. The length of the entire instrument is 60 cm long. The mouthpiece section consists of a slotted cylinder, to which a reed is attached by a metal clamp called a ligature. The mouthpiece plugs into the next section which is a barrel. The barrel is simply a connecting cylinder to which the mouthpiece and the upper section plugs into. The upper section is a cylindrical pipe consisting of 4 holes and 9 keys placed in different locations along the pipe. On the back of the pipe there is a hole and a key that is used by the thumb. The lower section plugs into the upper section and is also connected via a special bridge key. This piece consists of 3 holes and 8 keys. On the inward facing side of the pipe, there is a protruding piece of metal called a thumb rest, which supports the entire clarinet. The bell plugs into the lower section. It consists of a cylinder that flares out into a bell shape and ends the clarinet.
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