Can You Hear That Note? A Specialized Hearing Aid for Musicians

Overview

Objectives/Goals The goal of this experiment was to find and redesign a standard audio amplifier to fit a homemade band pass filter. The band pass filter was designed to detect the specific frequencies of a violin. Together, the amplifier and filter would be able identify and amplify the frequencies of a violin. The objective was to get the amplifier to amplify at a 85 percent accuracy level, and it was expected to amplify at a 60 percent level. Methods/Materials Five different schematics were put together, fitted with the band pass filter, and then tested in this project. The schematics consisted of capacitors, resistors, and other electrical parts. The diagrams were tested on breadboards before soldered. The final amplifier was tested with six different songs, and was awarded points across five scales covering five different areas of sound properties. Results Only a buzzing sound came from two of the five schematics, and another two didn#t work. The one that did work was tested, and the results were compared to the results of a standard amplifier. Conclusions/Discussion The first three schematics didn#t work properly due to miscalculations and the last schematic detected violin frequencies at a 63.9% accuracy level. The highest ranking scale was loudness, which meant the amplification process was successful, and the lowest ranking scale was crispness. The standard amplifier performed at a 64% accuracy level.

Awards (1)

• Honorable Mention

Competition history

• CSEF 2014 Electronics & Electromagnetics · Entry J0920

Resources

• CSEF project summary ↗

Related projects

Closest projects by meaning, across every fair and year in the corpus.

Browse more like this

• All Physics and Astronomy projects
• CSEF Physics and Astronomy projects
• Every CSEF 2014 project