Build a Band
Strings
To generate a vibration on a stringed instrument is by plucking the strings. Plucking the strings causes all surrounding particles to bump into each other, creating vibrations.
We created different notes by using different lengths. We measured out the lengths to be exactly ½ the wavelength of each sound. We also made the strings tight so that they were easier to play.
We propagated the sound by putting a hole in the bottom portion of the guitar. This allows the sound to bounce around the inside and shoot out the hole. This directs the sound in a certain direction. This also makes it so all the sound is concentrated in one direction. This also made collective waves which made it louder.
Wind
To generate a vibration for our PVC pipe (Clarinet) it comes from your mouth. The 7 holes on our clarinet are the different notes and that is how the vibration spreads differently, with each note representing a different pitch. The sound amplifies from the funnel on the end of the clarinet and it makes the sound amplify.
Chimes
The chimes generate vibration when they are struck with a hammer. The force of the hammer causes the chimes to move back and forth which is vibration. The chimes are all cut to a specific length to form different wavelengths and notes. This also causes different frequencies. The shorter length chimes have higher pitch notes and the longer chimes have lower pitched notes. To amplify the sound we made sure the chimes weren’t touching anything except the rubber bands that were holding them up. This way, the sound waves would not be interfered on by a lot of objects and stay at a high volume.
Wave So Strong
To the beat of 679 By Fetty Wap
Chorus:
All the different waves, and they all can be modeled too,
Longitudinal and Transversal, just to name a few,
To make some waves, give it a clap,
If you don’t believe me, I’ll call it cap,
Yardy know when the volume hits its peak,
Waves so strong, it make a durag look weak
Verse 1 (Longitudinal):
We’re gonna start with Longitudinal, Cause that’s where it's at,
The model we use, make it real flat,
The vibrations are just like a gnat,
They follow the direction of propagation, you better believe that,
The lower the frequency, the more the model will stretch,
Longitudinal model, very easy to sketch,
The model looks like a slinky,
But all the waves are smaller than your pinky.
Verse 2 (Transversal):
Next is transversal, the second of the two,
This is the last because there's only just a few,
The two models are similar, just like Deja Vu,
This model has its ups and downs, just like you,
The vibrations of this wave create right angles,
It’s kinda confusing, so let me untangle,
The direction of propagation is followed no more,
This wave is so interesting it’s impossible to ignore.
Chorus:
All the different waves, and they all can be modeled too,
Longitudinal and Transversal, just to name a few,
To make some waves, give it a clap,
If you don’t believe me, I’ll call it cap,
Yardy know when the volume hits its peak,
Waves so strong, it make a durag look weak
Verse 3 (Wrapping Things Up)
Now that we’ve told you all about waves,
We’ll send the haters right into their graves,
Everything we told you has been facts,
We would tell you more but it’s not in our contracts,
For those of you who weren’t entertained,
I think it's time that you get a brain,
This whole thing has been quite fun,
But the time has come, and we are now done
Design Process
String
We never were able to completely finish our string instrument, but we had a pretty thorough design of what we were planning to do. We planned on making a guitar with 4 strings. We learned that strings must be half of the notes wavelength to make the right sound. Our plan was to make the strings lengths of notes 1,3,5,7. Then, to play 2,4,6,8, you would put a finger on each string to change the pitch.
Wind
We completely our wind instrument first. We had a clarinet type design with 7 holes in the pvc pipe. For a wind instrument, the holes must be 1/4 the distance from the mouthpiece as compared to the wavelength. Since our instrument had 7 holes, the hole at the end was our note 1, and the holes where the rest. We also added a funnel on the end to spread the sound more evenly.
Chimes
For chimes, they must be the wavelength. We made 8 chimes and suspended them between wooden blocks using rubber bands. We twisted the rubber bands around each side of them and connect the rubber bands to the wooden blocks
Frequency
Frequency is directly related to wavelength. The longer the wave, the higher the frequency. The higher the frequency, the higher the note.
Wavelength
Wavelength is directly related to frequency. The longer the wave, the higher the frequency
Wave speed
The wave speed depends on what medium the sound is moving through. If it is moving through air, it will move fast since it is a normal medium
Amplitude
Amplitude is how loud the sound can be
Transverse Wave
A wave vibrating at right angles from where it was created
Longitudinal Wave
A wave vibrating in the direction of propagation
Electromagnetic Spectrum
The spectrum that covers all the different types of waves. It also includes all the waves that are not visible.
Reflection
Two things we did well were brainstorming and building. We brainstormed well during the design process. We worked efficiently and had our blueprints ready in 20 minutes. The next thing we did well was building. We built our instruments well and fast. The chimes were very sturdy and sounded amazing, the wind instrument played well, and we weren't done with the guitar yet.
Two things we can improve on were teamwork and paying attention. During the project, one group member broke off and work on his own. In the future, we need everyone to work together. Another thing is paying attention to instructions. Our group was constantly confused on what we had to do, which led to us being slowed down.