| Title: |
Inexpensive Audio Activities: Earbud-Based Sound Experiments |
| Language: |
English |
| Authors: |
Allen, Joshua; Boucher, Alex; Meggison, Dean; Hruby, Kate; Vesenka, James |
| Source: |
Physics Teacher. Nov 2016 54(8):500-502. |
| Availability: |
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://scitation.aip.org/tpt |
| Peer Reviewed: |
Y |
| Page Count: |
3 |
| Publication Date: |
2016 |
| Document Type: |
Journal Articles; Reports - Descriptive |
| Descriptors: |
Physics; Science Education; Introductory Courses; Audio Equipment; Science Laboratories; Acoustics; Science Experiments; Computer Software |
| DOI: |
10.1119/1.4965276 |
| ISSN: |
0031-921X |
| Abstract: |
Inexpensive alternatives to a number of classic introductory physics sound laboratories are presented including interference phenomena, resonance conditions, and frequency shifts. These can be created using earbuds, economical supplies such as Giant Pixie Stix® wrappers, and free software available for PCs and mobile devices. We describe two interference laboratories (beat frequency and two-speaker interference) and two resonance laboratories (quarter- and half-wavelength). Lastly, a Doppler laboratory using rotating earbuds is explained. The audio signal captured by all experiments is analyzed on free spectral analysis software and many of the experiments incorporate the unifying theme of measuring the speed of sound in air. |
| Abstractor: |
As Provided |
| Number of References: |
18 |
| Entry Date: |
2016 |
| Accession Number: |
EJ1117841 |
| Database: |
ERIC |