Materials for Sound Barriers *
AbstractWhat are the best materials to use for blocking out unwanted noise from the environment? You can build a test box (or test frame) around an audio speaker. Use a sound level meter to measure the speaker output. Use different materials to cover the walls of your test box (or frame), and see which materials do the best job at blocking the sound. For a more advanced project, perform your tests using different sound frequencies. Are some materials better at blocking certain frequencies than others? Which sound frequencies are most difficult to block? Why? (Boyd, 2004; Wandro, 2004)
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Last edit date: 2017-07-28
- Boyd, C.T., 2004. "Sound Barrier," California State Science Fair Project Abstract [accessed April 26, 2006] http://cssf.usc.edu/History/2004/Projects/J1103.pdf.
- Wandro, S.J., 2004. "Sound Barriers," California State Science Fair Project Abstract [accessed April 26, 2006] http://cssf.usc.edu/History/2004/Projects/J1143.pdf.
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