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Others Like “Sound Frequency Analysis.”

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Science Fair Project Idea
A concert piano. It's a beautiful instrument and a spectacular sight when it's all set up on stage. The first thing you may notice when you first look at a concert piano is the impressive-looking soundboard, that large board on the back of the piano that is tilted up at an angle. It is used for amplification. The sound board greatly increases the volume of sound coming from vibrations of the strings. The soundboard is positioned so that it gathers the sound vibrations coming from the strings… Read more
Music_p022
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Time Required Average (6-10 days)
Prerequisites You must have a classical guitar and a personal computer with a microphone, or a tape recorder with a visual display of input signals.
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
Do violin students have better relative pitch than piano students? Since the violin requires the player to choose the correct location to stop the string in order to sound the proper note, you might think that violin players would, as a result of practice, have better ear training than piano students. On the other hand, you could argue the opposite viewpoint, since piano students would have the benefit of hearing correct intervals (assuming that the piano is in tune). Which hypothesis do you… Read more
Music_p002
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Time Required Long (2-4 weeks)
Science Fair Project Idea
Tennis racquets, baseball bats and golf clubs all vibrate when they hit the ball. You can often feel it in your hands, particularly if you "mis-hit" the ball. You can find the point(s) on your racquet, bat or club—called the "sweet spot"—that minimize unwanted vibrations. Low-tech method: hang the racquet or bat straight up and down with a string from its handle. Lightly hold the handle with your thumb and forefinger and have a helper sharply tap the bat, strings or club face… Read more
Sports_p033
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Time Required Average (6-10 days)
Science Fair Project Idea
Use sound recording and analysis software to record voices of your family members. Can you figure out ways to identify each family member by just looking at the analyzed sound patterns from their voice (e.g., spectral frequency analysis)? Develop a hypothesis about what types of sound analysis will identify an individual. Have a helper record additional test files of your family members, without telling you which file belongs to whom. Unplug your computer speakers and see if you can… Read more
CompSci_p027
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Time Required Average (6-10 days)
Science Fair Project Idea
Learn how to edit sound files so that you can manipulate the recorded sound mathematically. You can either find specialized audio editing software or do background research to teach yourself about sound file structure so that you can write your own simple program to manipulate sound files. Try arithmetic operations on the sound values (e.g., adding or subtracting a constant, multiplying or dividing by a constant). How do these operations alter the sound? Try other mathematical operations:… Read more
CompSci_p029
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Time Required Average (6-10 days)
Science Fair Project Idea
Want to send coded messages to your friends? Can you write a simple letter-substitution encryption program in JavaScript? How easy is it to break the simple code? Can you write a second program that "cracks" the letter-substitution code? Investigate other encryption schemes. What types of encryption are least vulnerable to attack? Read more
CompSci_p031
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Time Required Long (2-4 weeks)
Science Fair Project Idea
Students who are mathematically inclined can use the student version of a program like MatLab or Mathematica to convert a digital image into numbers, then perform operations such as sharpening or special effects. This is a great way to learn about image processing algorithms. Read more
Photo_p018
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Time Required Long (2-4 weeks)
Science Fair Project Idea
The renowned pianist Vladimir Horowitz once said, "The most important thing is to transform the piano from a percussive instrument into a singing instrument." Check out this project to learn about sympathetic vibrations, one way to make piano strings sing. Read more
Music_p012
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Time Required Very Short (≤ 1 day)
Prerequisites To do this project, you'll need a piano which is in tune. You'll also need to know enough about the piano to find notes by their letter names.
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
You may know Lewis Carroll as the author of Alice in Wonderland, but did you know that in real life he was a mathematician who studied symbolic logic and logical reasoning? How can math help you solve Lewis Carroll's Logic Game? (Bogomolny, 2006) How are algorithms for solving the game Sudoku similar to solving a logic problem? (Hayes, 2006) For the super-advanced mathematical genius, try to evaluate currently available, logic-based computational tools, or design a better one!… Read more
Math_p035
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Time Required Average (6-10 days)
Science Fair Project Idea
Have you ever noticed that hip-hop songs have a fast tempo, while country ballads are usually slow? Do you think there is a correlation between the number of beats per minute (bpm) in a song and the type of music? You can explore whether different genres of music have different bpm ranges by measuring the bpm in several different songs from a number of different genres. Bpm can be measured using free music software, like the one listed below in the Bibliography, or by counting all the beats you… Read more
Music_p017
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Free software can be downloaded to help measure the beats per minute in songs. See the Bibliography for more details.
Cost Very Low (under $20)
Safety No issues
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