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Musical Instrument: Blog post #2

Posted by Anonymous in Physics - Echols on Friday, May 27, 2011 at 11:40 am


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)?

I was thinking about doing piano at first. Pretty sure I'm going to make either a xylophone or a twanger to make matters easier. Sound is produced with the xylophone by hitting on the keyboard of different sounds and pitches. The longer the rod the more mass it has where as to a shorter rod it'll have a more pitch sound.

2. Based on your understanding, how are you changing the pitch? What physical characteristics are important in this instrument?

 It depends on the length and width of the rod to create the sound.  


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?

I planned on using metal plates to use as the keyboard and a box to have a base for the plates. From my understandings, the length and width of the rod will have more of an effect in constructing the instrument I would like to play. 

4. What outstanding questions do you still have?


Am I on the right path Ms. Awesome? 

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Music Instrument Blog

Posted by Douglas Wallace in Physics - Echols on Friday, May 27, 2011 at 8:23 am


 

The instrument I chose was a xylophone. In order to produce sound you must hit the xylophone. The xylophone is a rectangular type of instrument with longer or shorter rectangles that produce higher and shorter notes. Those rectangles or hollow bars (depending on design) produce higher and lower pitched noises when you hit them.

 


When you hit the instrument the vibration through the material causes the sound waves to occur. If the bars are larger there needs to be more vibration, therefore causing a deeper sounds. So the size of the bars actually causes the pitch. For the instrument I am making I will most likely be using metal, copper, or PCP piping. I will play the instrument by hitting it with some type of bar that will actually cause sound. I will use nails and screws to make the instrument and as little tape as possible because tape muffles the sound and interferes with the sound waves. 

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Musical Instrument Blog #2

Posted by Anna Roman in Physics - Echols on Thursday, May 26, 2011 at 11:08 pm


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 sound is produced by strumming the strings of the ukulele creating a vibration. It is echoed by having a decent sized hole on the body of the ukulele rightl beneath the strings, so the vibration that each string makes is echoed.

2. Based on your understanding, how are you changing the pitch? What physical characteristics are important in this instrument?
- I will be changing the pitch by changing the tension of each string (loosening the string or tightening the string). By doing this the strings will change pitch and be either lower or higher depending on how I change the tension. On ukuleles there is a part located at the top of the neck (big long part) that has fours tuners. Where you basically tie each string to one of the tuners and when you want to change the tension you simply turn the tuner left or right depending on how hig or low you want the pitch.

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?
- The materials I will mainly need are:
- A box of some sort that I can cut a hole in and use as the body of the ukulele
- A longer piece of wood that I can use as a neck
- Small pieces of something that I can use for the frets
- Another piece of wood to put the tuners on so I am able to change the pitch
- Four tuners
- Four ukulele strings (not four of the same, one of each chord)

I believe that is basically all I will need material wise. Since a ukulele is very small each material does not have to be big, since I want to keep it small. So I will have to look up the measurements of a ukulele so I can know how big the materials have to be. I will simply play this instrument by strumming the strings, creating the sound, while holding down my fingers on the strings on different frets creating different notes.


4. What outstanding questions do you still have?
- Why is there specific strings for a ukulele and how does it make a difference?
- How is it that the hole on the body of the ukulele creates the echo for the strings? and how big, depth wise, would I have to make the hole for the echo to work?
- How do you know how far apart to put the frets? and how does this change the notes and chord of the strings?
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Musical Instrument Blog #1&2

Posted by Alaya White in Physics - Echols on Thursday, May 26, 2011 at 10:32 pm

​I have decided to make a water xylophone.  
water
water
Link to video example of water Xylophone

A water xylophone is played by a mallet like stick of something hand banging onto the instrument and the vibrations of the parts of the instrument is what makes the sound. With a water xylophone, the water and the glass jars are what vibrates and make the sound. The notes change depending on the different jars with different amounts of water in them. The more the water the more pitch the not has (lower pitch), but when the jar has less to very few water, the sound and pitch is much higher. 

The materials used for the xylophone is 5-7 jars filed with water measured in different milliliters of water, food coloring (optional to make it visually appealing), and a mallet/striking instrument to create the sound. The sound of the water xylophone is produced by vibrations of the water and the jar. The mallet contains all of the potential energy before in has any encounter with the jar with water in it. The energy transfers into kinetic energy when the mallet hits the jar. that energy is spread throughout the jar which makes the sound and creates sound waves.
Tags: Homemade Instruments, Physics and Instruments, Science Leadership Academy, Alaya White, Water Physics, Water xylophone, awhite
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Musical Instrument Blog 2

Posted by Jeffrey Kessler in Physics - Echols on Thursday, May 26, 2011 at 9:58 pm

1. The friction between the rotating glass and one’s wet finger creates a slight level of friction. This friction creates a vibration in the bowl, which then redirects the vibration’s frequency towards the user.


2. The pitch of the instrument is changed by using an instrument with a different bowl shape/size that produces a frequency equivalent to the specific note.


3. The materials necessary to construct the instrument include numerous glass bowls, a spindle mechanism, and a small container of water. Playing the instrument involves  changing my thumb from one bowl to the next. I plan to complete the instrument as soon as possible.


4. I currently have no additional questions.

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Musical Instrument Blog #2

Posted by Sofia Frank-Fischer in Physics - Echols on Thursday, May 26, 2011 at 4:00 pm

My instrument, a simplified "Hammered Dulcimer":
The instrument is played by hitting strings with a small metal mallet. When the mallet hits the string, it causes the string to vibrate. This vibration sets off a wave in the air molecules - a sound wave. The different strings of the instrument produce different waves, and therefore different pitches. For example, a more tightly pulled string will produce a higher frequency wave, which results in a higher pitch. Important physical characteristics of the instrument include something to tune the strings with, so that I can make sure they produce the right wave frequency. Another important characteristic is the mallet, because that is what causes the strings to vibrate. I think that I need to have some kind of base that will make the sound more audible, but I'm not sure how. Maybe something like a guitar – a hollow wooden construction. I'm not sure. I'm not sure what kind of material is best to use for the strings, but I think I'll use a spool of "string wire". I'll need wood for the base of the instrument and also a stick of wood for the handle of the mallet. I'll need some metal for the head of the mallet. I kind of want to try to use bridges as well, but I'm not sure how those work. I need to do a bit more research into that topic.
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Musical Instrument Blog

Posted by Basheer Lewis in Physics - Echols on Thursday, May 26, 2011 at 12:29 pm

I am making a bass guitar it is played most of the time using the fingers,but a pick could also be used if the person so choose.The tension on the strings produce a note and you are able to change the note thought pressing on the fret bored at different points.The waves it produces is sound wave that most of the time have a deep undertone.
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Blog #2 Musical Instrument

Posted by Julia Boyer in Physics - Echols on Wednesday, May 25, 2011 at 7:08 pm

The xylophone produces sound through the vibrations created when the mallet hits the keys. The vibrations displace air molecules, which creates waves because the air molecules are now bunched together and they are trying to rearrange themselves, but that causes more areas of bunched up air molecules.
These sounds are changed when the waves are altered. This can happen when the tension in the instruments changes or when the size of the object creating the waves changes. The latter is what the xylophone uses. Different keys of different sizes change the pitch: the smaller create higher notes and the bigger keys create lower notes.
To get the best sound, I will use metal tubes to create my xylophone. I think metal creates clear, sharp sounds and it will be easy to change the size of the tubes. I will need to research how the size changes the pitch in much more detail. Then, I plan to attach them to a base and hit them with mallets with metal tops to them.  

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Blog #2 Musical Intrument

Posted by Maxime Damis in Physics - Echols on Wednesday, May 25, 2011 at 5:53 pm

xylophone/wood blocks
Sound is produced by using a mallet style stick of either metal, rubber, or wood. It is hit against the metal or wood surface. When this happens, the energy from the mallet transfers into the energy of sound waves which are then created. The shape can have two closed ends or one loose end depending on the design. This creates different types of resonance. The vibrations are continued through the shape of the instrument (tubes or blocks). The length of these tubes or blocks is what changes the pitch. When building these wooden blocks or tubes, keeping the width constant is going to be very important. The only varying factor should be the length. This gives less variables to think about. As the length of the tubes or blocks increase, the pitch will decrease.

As far as the actual construction of the instrument goes, I am not entirely sure whether I am going to be making wooden blocks put together in a xylophone style or an actual metal xylophone. I think this will all depend on the actual plausibility of building the wooden blocks which were my original idea. I need assistance from Echols on this one. Building either will be a lot of work but I can use my engineering class periods to work on it. I will be playing this instrument using mallets. The only outstanding question I have is whether wooden blocks seem possible to Echols or if I should do a xylophone instead. 
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Musical Instrument Blog #1

Posted by Newon Dennis in Physics - Echols on Wednesday, May 25, 2011 at 12:36 pm

Since I was a little kid, the one instrument that’s always captured my attention was the guitar. It was something that could be used for so many different types of genres for music. Hip hop, rock, classical. It captured every sound. So the beginning of this year our school finally got a real music. Who was cool, fun, amazing at some many different types of music and he was an awesome friend. Mr. Newman has taught me a lot about the guitar, some good, some awesome. But such an amazing and interesting kind of instrument.

Playing the guitar takes a little time to really grasp, because you can play the guitar in two types of methods, using tabs and/or chords. For personally chords are much more fun and easier to play but tabs always good to learn especially if you want help with fingering. First you would place your fingers on the chord or sting you want to play then depend on the volume of mood of the song give the strings a strum and if you playing tabs you may have to play that one string first and move to another string so you strum the one string first then move onto the next one using the beat of the song to guide your strumming speed and/or strumming pattern.

To change a note:

For chords you would simply move from the previous chords to the next one while continuing you strumming pattern. Same thing for tabs except in some cases you would be moving from one string to another or one tab to another.

A guitar has a strange shape but it’s very helpful for playing and for the player.  But a fun way to describe its shape is to say it’s like an 8 on a stick.

Basically I want to be able to try and make a guitar that is as professional as possible which means I can’t take too long to make it. I know I’ll be able to get real guitar strings for it so that’ll help with the sound and I can try and make a guitar that represent my personality as well.

 

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PHYS-002

Term
2010-11.S2

Blog Tags

  • Science Leadership Academy 1
  • Homemade Instruments 1
  • Physics and Instruments 1
  • Alaya White 1
  • Water Physics 1
  • Water xylophone 1
  • awhite 1

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  • Rosalind Echols
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