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Unit 4 Rich Task

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by

Karly Lockhart

on 12 June 2015

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Transcript of Unit 4 Rich Task

How Does a Trumpet Produce Sound?
A trumpet produces sound when the musician blows air, through closed lips, to produce a "buzzing" sound in the mouth piece which creates a standing wave vibration in the air column inside the trumpet.
Initially, it is the metallic mouth piece that produces the sound. Mouth pieces vary in size. A mouth piece with a deep cup will produce a more mellow sound where a mouth piece with a shallow cup will produce a brighter, more piercing sound. This will determine how much air is let into the body of the trumpet, changing the wave pattern.
How is Pitch Changed?
The pitch is changed depending on the volume of the air that is vibrating as well as the speed of the trumpeters vibrating lips. The volume of air depends on the length of the tube; the longer the tube, the larger volume of air, creating a lower pitch. By buzzing the lips faster or slower the trumpeter allows the air to resonate at different harmonics. To get all 12 noted on the scale the trumpeter has to press the valves in order to change the air flow.
When you press the valves, how does the sound change?
The valves are what control the airflow. The valves are used to get closer intervals. After the valves there are three different slides that the air runs through to change the pitch.This is how the pitch is lowered when certain valves are pressed. The valves lower the pitches at different intervals depending on which valves are pressed down and how many are pressed down at the same time.
References
http://au.yamaha.com/en/products/musical-instruments/musical_instruments_compendium/trumpet/how_does_the_trumpet_generate_sound/
http://www.scientificamerican.com/article/does-temperature-affect-instrument-sound/
http://www.lutherhigh.org/documents/arts/les_band/instrument_info/trumpet_info.pdf
http://www.angelfire.com/band/vhstrumpets/pages/how.html
What are some environmental/social impacts of the sound produced?
Some environmental impact of the sound a trumpet makes is the temperature of the room, they type of mouth piece being used, whether or not the trumpeter is using a "muffler", and where the trumpet is being played, whether is be an opera house, a bed room or even a storage closet will change the sound the trumpet makes.
Some social impacts are how many people are in the room when the instrument is being played, also if there are other noises in the room at the same time the trumpet is being played could effect the sound waves if they were to collide with one another.
Dents in the trumpet may also affect the sound if the dents are in the tubing.
Unit 4 Rich Task
By: Karly Lockhart
Full transcript