Web Science and Digital Libraries Research Group

(Note: This is the first in a series of posts about visualizations created either by students in our research group or in our classes.) The US Navy runs a Hearing Conservation Program (HCP) which aims to protect the hearing and prevent hearing loss in service members.  Persons who are exposed to levels in the range 85-100 dB are in the program and have their hearing regularly tested.  In the audiogram, there is a beep sounded at different frequencies with increasing volume.  The person being tested raises their hand when they hear the beep and the frequency and volume (in dBA) are recorded.  A higher volume value means worse hearing (i.e., the beep had to be louder before it was audible). Not only are people in the HCP regularly tested, but they are also provided hearing protection to help prevent hearing loss.  The audiogram data includes information about the job the person currently holds as well as if they are using hearing protection. Researchers are interested in studying Noi