Investigative Skills in Science
Research Proposal Form - FINAL
Research Proposal Form - FINAL
Project Title: Investigation of the soundproof of a material
Research Plan
Project Title: Determination of the most sound proof material
1. RATIONALE: Include a brief synopsis of the background that supports your research problem and explain why this research is important and if applicable, explain any societal impact of your research. Include at least 3 in-text citations in your rationale. (500 words)
The goal of the experiment is to find out which material is the most soundproof. This hopefully may be implemented for construction preventing the sound from disturbing others.
We have learnt that sound is the energy things produce when they vibrate. We have also learnt that the vibration forces air around it vibrate and carry energy out from the things in all directions. Eventually, even the air inside your ears starts vibrating and that is when you begin to perceive the vibrating drum as a sound.
Absorbing means using rubbery materials that soak up incoming sound energy so there's less to transmit onwards into a room, whereas dampening means using a solid, wall that doesn't readily vibrate. Dampening and absorbing might mean fitting solid, thick doors rather than hollow ones, or double doors separated by an air gap
The dictionary definition of soundproofing is “to prevent sound from coming into a room or building, or from being heard outside it”.
Soundproofing is all about making amendments to the physical structure of a property so that vibrations and airborne sound are dispersed and absorbed efficiently.
Soundproofing works by tackling the two ways in which sound travels.
The most common way that sound travels are as air-borne sound, this occurs when soundwaves, caused by something like someone speaking or music being played, travel through the air.
The second way sound travels is as impact noise, this is when sound vibrations travel through a solid structure such as floorboards.
Airborne noise is the noise that travels through the air.
Someone talking, a radio or TV playing are examples of common airborne sounds.
Airborne noise can be a problem in homes where you have thin internal walls which are poorly insulated and have gaps in them (for example around plug sockets).
The lack of insulation means the sound can travel freely through the gaps in your wall without being absorbed.
Dealing with airborne noise effectively involves dampening and adding mass. This is done by sealing up walls, doors, floors and ceilings (walls are usually the primary culprit) and adding insulation to prevent airborne noise from travelling through.
2. RESEARCH QUESTION(S):
2.1 Research question being addressed
How does sound travel through materials
What material is the most soundproof
Types of materials that can reduce sound?
2.2 Hypotheses
The styrofoam is the most soundproof material
2.2.1 Independent variable
Types of material
- Wood
- Cotton Cloth
- Paper
- Aluminium foil
- Cardboard
- Styrofoam
2.2.2 Dependent variable
The dependent variable is the amount of sound detected. We believe that the soundproof foam panels are the most soundproof material
2.2.3 Controlled variables
(a) Distance between the material and the sound producer
(b) Distance between the material and sound detector
(c) The surrounding material
(d) The thickness of the material
(e) The shape of the material
(f) The surrounding sound volume
(f) The surrounding sound volume
(g) The frequency of the sound emitting from the same device
2.3 How is this based on the rationale described above?
We can use the rationale to understand how soundproofing works.
3. Method
3.1 Equipment list:
- Decibel Sensor/Sound Sensor
- Wood
- Cotton Cloth
- Paper
- Aluminium Foil
- Cardboard
- Styrofoam
- Phone
- Speaker
3.2 Diagrams
Figure 1: Experimental setup
3.3 Procedures: Detail all procedures and experimental design to be used for data collection.
- Set up the experiment as shown in Figure 1. With the height of the box as 18 cm, the length as 20 cm and width as 15 cm
- Connect the phone and the speaker and produce a sound of 2,000 Hz
- Use a decibel sensor/ sound sensor to measure and record the loudness of the sound without material as L1
- Place the material ,with a height of 18cm, the length of 20cm and width of 0.4cm in the slot and cover it up with the lid
- Use decibel sensor/ sound sensor to measure and record the loudness of the sound as L2
- Calculate the change in loudness of the sound using L=L1-L2
- Repeat steps 2 to 6, for 2 more times
- Calculate the average change of the sound
- Repeat steps 2 to 8 with the remaining materials.
3.4 Data Analysis: Describe the procedures you will use to analyze the data/results.
- Tabulate the data of the sound reading
- Plot a bar chart with all the numbers
- Find the average for each material
- Compare the data and find which one was the most soundproof
4. Risk, Assessment and Management: Identify any potential risks and safety precautions to be taken.
Table 1: Risk Assessment and Management table
5. References: List at least three (3) major sources (e.g. science journal articles, books, internet sites) from your literature review. Choose the APA format and use it consistently to reference the literature used in the research plan. List your entries in alphabetical order for each type of source.
E-Book
Cox,T. (2014). W. W. Norton & Company. Retrieved from http://1.droppdf.com/files/cw6xr/the-sound-book-trevor-cox.pdf
Website
Woodford, C. ( 2009 ). “Sound.” Explainthatstuff. 14 Jan 2020, from https://www.explainthatstuff.com/sound.html
Website
Woodford, C. ( 2009 ). “Soundproofing.” Explainthatstuff. 14 Jan 2020, from https://www.explainthatstuff.com/soundproofing.html
Website
Dan. “Soundproofing: What Is Is, How It Works & How to Do It.”Soundproofpanda. 16 Jan 2020, from https://soundproofpanda.com/soundproofing/
E-Journal Article
Kitahara, T. (5 August 2014). International Journal of Vehicle Design. Study on effective application of soundproofing materials through low noise prototype car development, abstract. Retrieved from https://www.inderscienceonline.com/doi/pdf/10.1504/IJVD.1984.061108
Youtube video
Linus, S. [teckhquickie]. (2015, December 12). Sound Dampening As Fast As Possible. Retrieved from https://www.youtube.com/watch?v=VDCl-PysXLE
6. Bibliography: List at least three (3) major sources (e.g. science journal articles, books, internet sites) from your literature review. Choose the APA format and use it consistently to reference the literature used in the research plan. List your entries in alphabetical order for each type of source. It should also include at least the 3 entries in the References section.
E-Book
Cox,T. (2014). W. W. Norton & Company. Retrieved from http://1.droppdf.com/files/cw6xr/the-sound-book-trevor-cox.pdf
Website
Woodford, C. ( 2009 ). “Sound.” Explainthatstuff. 14 Jan 2020, from https://www.explainthatstuff.com/sound.html
Website
Kivi, R. ( - ). “How Does Sound Proofing Work?.” Explainthatstuff. 14 Jan 2020, from https://www.explainthatstuff.com/soundproofing.html
Website
Woodford, C. ( 2009 ). “Soundproofing.” Explainthatstuff. 14 Jan 2020, from https://www.explainthatstuff.com/soundproofing.html
Website
Dan. “Soundproofing: What Is Is, How It Works & How to Do It.”Soundproofpanda. 16 Jan 2020, from https://soundproofpanda.com/soundproofing/
E-Journal Article
Kitahara, T. (5 August 2014). International Journal of Vehicle Design. Study on effective application of soundproofing materials through low noise prototype car development, abstract. Retrieved from https://www.inderscienceonline.com/doi/pdf/10.1504/IJVD.1984.061108
Youtube video
Linus, S. [teckhquickie]. (2015, December 12). Sound Dampening As Fast As Possible. Retrieved from https://www.youtube.com/watch?v=VDCl-PysXLE
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