Boys and Girls Ultimate: State Championships
Teams must qualify.
Today, is my birthday
Everyone celebrates except for me
Days pass, and go away
Am I the only one to see
I’m getting older by the day
Before I know it, my hair will go grey
But one thing will always be the same
Other then me being really lame
Age can’t stop who we are
or all the miles, we came so far
Age, is just a number in a book
A book, that someone already took
And all the pages, taken away
The only ones left say
We met, we loved, we live on
Past the front lawn
Past these simple lives
Today is my birthday
Everyone celebrates except for me
Days pass, and go away
But I’ll remember what you say
Past these simple lives
My birthdays today
I'd like to make a trumpet.
A trumpet is horn-like, in which a person has to blow, but not air, into the mouthpiece. In the not air part, I mean that it's more a buzzing through lips than just blowing air. It is one big horn, with many different tubes connecting three valves and eventually the mouthpiece.
I think maybe trumpets use hollowness to produce sounds. Maybe I could use this to my advantage in thinking of ways to make one.
All I can really say about waves is that they are formed from blowing into the trumpet. Maybe the way they change is by changing the loudness and the high/low notes.
Physics: Musical Instrument Blog
Talented Young Xylophone Player:
I am interested in playing a instrument that requires you to hit it and since I can't stand strings, we can't make drums, and I get dizzy by blowing too much air, I decided that I would play a xylophone type instrument instead. I always wanted to play a real xylophone because I never had one, but I have seen others play and I find it interesting. I am considering making a meal xylophone or possibly even a PVC instrument in which you force air through by smacking on it, but that may be quite complicated.
The xylophone is an instrument that is played with two sticks that have plastic spherical heads that hit the notes on the xylophone. Xylophones, like many instruments, have octaves and like the piano have various keys to hit. Xylophones are basically drums in the keyboard format that make chime sounds because they are plastic to metal. In order to produce sound the person playing the xylophone must hit note with the ball end of the stick. The notes are changed according to the size of the key that is hit as well as the tube below that causes the "extra" sound so that keys sound differently. The sound is sharpened when the keys are hit on the ends rather than the middle, which produces a fine sound, but it is duller the sound on the side keys.
Small keys have a higher pitch and the larger keys have a much low pitch. What this makes me think about how to create and change sound is that a force must be applied over a area in order to generate a sound and the differences in the area in which that force is applied changes the sound the instrument makes. I think that notes are sustained like waves are created. In other words, when a note is hit on an instrument, it you hear it and it fades quickly unless sustained (kept aloud). When waves are created they continue on if they are sustained, but fade if they are not. The same thing goes for stringed instruments. If the string is not constantly strummed, it won't continue to vibrate and produce sound.
If you think the Blue Man Group is cool, check this guy out, he made this amazing PVC instrument. It is official, if you play a xylophone or xylophone like instrument, you must play the Mario theme song.
Student makes his own PVC instrument and puts on quite a performance:
Physics Musical Instrument Blog #2
Sound is produced via energy transfer, which creates vibrations. When vibrations travel throughout an instrument they produce sound because the particles of the air are compressed and uncompressed in patterns, which make various frequencies depending on how frequent something vibrates back and fourth. In other words, vibrations cause particles to collide in patterns of compressed and uncompressed waves called sound waves. The energy transfer from the vibrations are what cause particles to collide the way they do.
Pitch is changed on a instrument depending on how much pressure is applied over an area. For example, a larger pipe when banged would have a lower pitch than a smaller one. I think the way pitch changes is caused by the distance that a wave or waves have to travel. Some physical characteristic are of course the length of the instrument, the shape (hollow or not), the material used (tension has a direct effect on the sound that something will make i.e. a high tension string on a guitar sounds good while a low tension spring does not, which is the reason for tuning the guitar).
I am still in the process of deciding what instrument to make, but I am thinking of making a xylophone out of pipes and metal parts, possibly even keys. I plan to play my interment by banging on the various pipes with the sticks that I will have to make up out of wood and some sort of plastic or other metal. While the plan is still in the process of creation, I may make my instrument by having the pipes hang from strings on one long pipe and having the pipes somehow kept in place, but free to move in order to create a sound. I am also considering maybe making a flute like instrument out of pvc pipe and drilling holes in it as well.
How do I create different notes with a xylophone? How can I make it so that the xylophone actually plays? Where do I put the holes on that flute and how do I generate the various notes? How does tension effect pitch?
The instrument that I am interested in making would be either a violin or a small classical guitar.
A violin is played by rubbing a bow across a set of different strings and then placing your fingers across different sections of the violins strings to create a higher or lower pitched sound. A guitar is played in a similar way, except there is no bow, only the strumming against the guitar's strings with either a fingernail or picker.
You can change a note in a guitar and violin by either plucking/strumming a different string or by placing your fingers on different portions of the string to create a different sound.
A violin is shaped like a pear, it has a curvy top but an even curvier bottom and in the middle lies the plane of strings. Guitars are sometimes shaped like violins with a pear-like shape as well, however instead of having a just a long strip of strings, some guitars have small holes in the center which is unlike a violin.
The shape of these instruments makes me think that the way they are held could possibly affect the way that sound is created and transferred. I know that in order to play a violin you have to hold it upright and parallel to an outstretched arm on a shoulder, yet with a guitar you can be more relaxed. A cello and violin are shaped very similarly, however they both produce different sounds and are held different ways, so that makes me wonder if the shape or the way the instrument is held can make a big difference.
The connections that I see is that when you strum a guitar and a note is played, it isnt continuous because the sound waves/vibrations eventually stop and this is very similar to the lab we did in class with the slinkys because when I would push one side, there would be a wave that would go to the other side and then stop.
I used to play the violin for about two or three years when I was in elementary school so I am somewhat familiar with the way it works and how to achieve different sounds, however, I have never played a guitar before.
Some helpful youtube videos:
Violin Basics -> http://www.youtube.com/watch?v=_04rjPbZarE
How to hold a violin --> http://www.youtube.com/watch?v=5dFjpdCdbXs&feature=relmfu
Simple Guitar Basics -->
--How is it played? What does the person have to do to produce sound?
Most woodwind instruments are tubes. The sound comes from a vibrating column of air inside the tube. The player makes this column of air vibrate in one of several ways:
By blowing across an edge, as in the flute, recorder, whistle, and root beer bottle
By blowing between a reed and a fixed surface, as in the clarinet and saxophone
By blowing between two reeds, as in the oboe, bassoon, sarusaphone and bagpipes
--How do you change a note? (you might have to watch very carefully to see this)
Woodwind pitch depends on the volume of air that is vibrating. A larger volume vibrates more slowly, for lower pitch; a smaller volume vibrates more quickly, for a higher pitch. For most woodwinds, the player changes pitch by opening and closing holes along the instrument's length. Without keys, there can only be as many holes as the player has fingers to cover them with. Adding keys allows the number and complexity of holes to be increased. Increasing the blowing pressure past a certain critical point (called the "break") causes the air column to resonate at a higher harmonic (see the harmonics section, below) and raises the pitch of many woodwinds by a large interval. In most cases this interval is an octave (e.g. middle C to high C), but in the clarinet it is a 12th (e.g. middle C to the G above high C). With minor variations this is the way woodwinds achieve large ranges.
--How is it shaped?
At one time, most woodwinds were made of wood; hence the name. The easiest way to characterize them now is as wind instruments (that is, you blow into them) which aren't played by buzzing your lips together.
--What does this make you think about how you can create and change sound?
i think that if you put your fingers on different holes it will kinda make it fun trying to play different notes because it is so easy to play the recorder.
--What connections (if any) do you think you can draw between what you are observing and you might already know about waves?
its like a vibrating sound that really makes the music from your fingers to your mouth with you blowing the air into the instrument.
1. How is sound produced by this instrument (now that you know more about sound, please try to refer specifically to the energy transfer and vibrations)?
The air vibrates over then under the fipple by the Bernoulli principal causing a vibration in the tube of air inside the recorder. The pitch is regulated by covering holes which in turn lengthen and shorten the length of vibrating air.
2. Based on your understanding, how are you changing the pitch? What physical characteristics are important in this instrument?
The recorder is distinguished from its cousin, the transverse flute, by the whistle mouthpiece built into the instrument. This mouthpiece channels the air stream through a "windway" and against an "edge" where the tone is produced, doing automatically what a flute player must learn to do through coordination of the lip muscles. The windway is an air channel carved into the "block" (of wood or plastic) which closes off the top of the instrument's tube. This block is also called a "fipple." The "window" is the rectangular opening on the front of the instrument where the edge and the bottom opening of the windway can be seen. you can really chang the pitch by the way you play the notes.
3. What materials will you actually be using for your instrument and why? How will you play your instrument? What is your plan for constructing the instrument?
- White pipe pice 69.5cm long
- I will drill the holes in and also one at the top i might have to turn it around a bit because of materials and turn it into a flute. so there will be one big whole at the top like a flute has to it can be played.
- Exactly the same posture needed for good singing, either standing or sitting, is needed for good recorder playing. The back should be straight but relaxed, and the shoulders, arms, hands and fingers should all be relaxed. Tension anywhere in the body can result in poor breath support, poor tone quality, problems with intonation, or fingers that are stiff and unresponsive. The second basic element of recorder playing includes breathing and breath control. The breathing that produces a focused, unforced, non-vibrato vocal sound for children is the breathing that produces a focused, unforced, non-vibrato recorder sound. A student who can sing in tune and control the breath sufficiently to shape phrases can transfer those skills directly to the recorder.
4. What outstanding questions do you still have?
There are 7 holes in a recorder, plus a thumb hole on the back, which makes 8!
When will we start building these instruments?