For a flute, the referring to energy transfer and vibrations, sound is produced by having a standing wave of air in the column of the instrument. At the end of a flute, air moves freely. A flute is an example of a standing wave.
How is it played? What does the person have to do to produce sound?
It is played by blowing thorough the top and moving your fingers over the holes that produces different sounds at different frequencies depending on where the holes are positioned.
How do you change a note?
A note is changed when your fingers move over different holes.
How is it shaped?
The shape of it is sort of like a miniature metal pole.
What does this make you think about how you can create and change sound?
and where my fingers are positioned.
What connections (if any) do you think you can draw between what you are observing and you might already know about waves
To produce the sound of the guitar, the player had to pluck at each string.
The way he changed the note was plucking at different parts of certain strings and holding certain strings down towards the top of the guitar. The guitar is shaped regularly. The strings are straight down from the top of the guitar to the middle. The big part is shaped as like…a circle with its two sides squished in. The creation and change of the sound makes me think of tension and the length of each string having something to do with the pitch. I think that as you tune the guitar, which is pulling the strings tighter or loosening them, you affect the damping. Since it would affect the damping, the sound would either travel slower or faster depending on the tension of the string.
In a guitar, the sound is produced when you pluck the string of course. The thing about it is that when you hold your finger in different places on the string of the guitar, the sounds changes. The reason this is so is because the wavelengths change, giving you a lower sound the longer the wavelength, and a higher sound the shorter the wavelength, the frequency of the wave is also affected by the wavelength. When the wavelength is short, the frequency is high and when the wavelength is long, the frequency is low. In order to change the wavelength you must hold your finger at certain parts of the guitar string, making the string either shorter or longer when you pluck it with your other finger. The sound is loud because of the vibration. In the guitar there is a hole in the middle and a box kind of thing behind it. The vibration bounces off of that back piece of the guitar and out through the hole.
To change the pitch of my instrument, I will do the same. I will hold my fingers down at a specific spot on the string and pluck it. The physical characteristics that are important in this instrument are the length of the string and the tension of the string.
I will be using wood and copper strings. I chose to use these two things because they are also used in guitars, harps, and other string instruments and they all get good sounds. To play it, I will pluck the strings at certain parts. My plan to construct this instrument is to build it just like how a harp looks….or as close as I can get to one.
For my physics music assignment I decided to build a wind chime as my instrument. A wind chime is played not by mouth or string but my a hand and a hard object, ie mallet. Sound is only produced when another object hits one of the wind chimes. Typically a person has a mallet or stick and hits the wind chimes that are of different lengths to produce different sounds. Wind chimes are a bunch of pipes made out of metal that are of different lengths. They are generally places on strings and hung from ceilings. The shape of the wind chime makes me think that the length plays a big part in the sounds that are produced. For instance if you have a longer pipe the sound will be deeper and lower. When learning about waves I related it to my instrument. Different wavelengths produce different sounds because of the different frequencies. All of the pipes of the wind chime have different frequencies.
Blog Post #2
I want to design my instrument in a way where it isn't necessarily "easy" but more manageable. I want to make it so it is portable but still large enough to produce a good sound. Since taking a more in depth look into waves, and energy transfer with waves I've learned that, with my instrument, when another objects strikes against it, the energy form it transfers into the pipe and vibrates it. The vibrations cause the sound waves and the sound waves have wave lengths that make the sound. With my wind chimes the pitch of the instrument will change according to the length of the instrument. To build my instrument I will be using copper pipes, string, and wood. I'm using copper because it was the metal my teacher chose but really any metal will do. Once my instrument is built I will play it by taking another piece of metal and hitting it on the pipes.
I will build,
and then later on play the Flute for my group presentation. Our objective is to
build an instrument, and then play it for our class. There are obstacles that
we need to do such as calculation and such in order to do this. I researched
the background of the Flute. To play the flute and produce
sound, someone will have to blow through a hole at the end of the Flute and
while blowing, there would be holes at the other end of the Flute where the
persons fingers will be covering the holes and uncovering the holes based on
what notes that they want to play, and to change the notes. The Flute is a basic pipe; it can have
either one fixed end or two loose ends. It also has holes that are different
lengths from the hole at the opposite end, which is where the person blows
into. When i think about myself playing the Flute in order to
change the sound, i will have to simply practice where at what time my fingers
cover and uncover certain notes (the holes at the opposite end of the blow in
hole). Compared to waves, the size of the flute, and where the
holes are, determines the sound outcome. As the notes changes, the notes change
Energy from the air molecules transfer into the hole that is blown through, and they vibrate within the Flute, and as that happen, having the notes at the other end of the Flute either covered or uncovered, the Flute vibrations actually turns into sound. In order to change the pitch, the notes that are on the Flute are the holes. The hole that is farthest away from where it is to be blown into is the lowest note. The hole closest to where we have to blow in the holes to produce sound makes the highest pitch. So to change the pitch, simply change the notes. I will just use my fingers in order to play this instrument. I will play my instrument based off of the songs notes. If a note indicated that have to play note A, then ill have to use one of my fingers to cover up the A note. To build this instrument, I will have to have a PVC pipe for the flute structure itself, duck tape to have a fixed end flute by covering one side of the pipe, and a drill to drill holes where the notes will be.
The instrument I am interested in making is a pan flute. It is in the genre of wind instruments, which are generally played by blowing on them. To produce the sounds and notes from wind instruments, pan flutes in particular, I have to blow into the top open parts of the flute and the different length pipes each make a different note when blown into. The shape of the pan flute is like a diagonal array of pipes from tallest to shortest. This makes me think that length places a key part in the changing of notes. Based off a similar observation from blowing into soda bottles with various amounts of soda in them: when more space is in the bottle, the deeper the sound is when you blow, I think that frequency/pitch of the waves are based off length.
The instrument pan flute,produces sound by causing vibrations into the air within the pipes which causes the air molecules to vibrate and pass energy down until it reaches the fixed end and returns back up to the free end, making a sound. The various sounds or “frequencies” are produced depending on the length of the pipe. To recreate this instrument I will be using PVC pipes of various lengths and nickles to create the fixed ends. I will play this instrument just as anyone would play an actual pan flute, by blowing into the various pipes to form different notes of a song (row row row your boat in this case) .
The physical characteristics that are important are the length of the the metal bars. As well as small tube below each bar, which helps to project the sound and sustain it when the bar is struck. I can change the pitch of the xylophone by manipulating the size and thickness of the bars.
I will be sing pvc pipe, wood, nails, a metal spool for a mallet but I haveing yet decided what i'm going to use for the tubes yet. My plan for constructing my instrument is to complete most of it in school It doesn't seem hard to make the only part that stil confuses me is how to attach the tubes.
How do I attach the tubes to my xylophone ?
For the xylophone, the sound is produced when the plates on the xylophone are hit with the stick being used. The impact causes a vibration between the objects which results in a sound. Of course these sounds, put together melodically, makes music. i think that to change the pitch of the xylophone I would have to change the size of each plate, or pipe, which should result in a different sound.
To create my xylophone, I will use those bronze colored pipes, a piece of wood to attach them to and something to hit them with. To make sure that I have a different pitch for each pipe, I will make then different sizes. The xylophone will be easy to play by using the stick (I haven't decided what I will use), and hopefully easy to make.