Auditory Demonstrations in Acoustics and Hearing Conservation is a compact disc that contains a series of audio demonstrations that illustrate fundamental concepts in acoustics (e.g., frequency, sound level, tonal and broadband noise sources, A-weighting, octave band filtering, audiometric test frequencies, and simulated hearing loss demonstrations). The disc was produced for the Glenn Research Center by  David Nelson and  Ashton Taylor of  Hoover & Keith, Inc..

The disc includes material appropriate for classroom use as well as broadband noise for fitting hearing protectors, and industrial noise samples recorded at NASA Glenn Research Center by Telarc International Corporation. These GRC noises were used to produce sound effects for Telarc's CD Symphonic Star Trek CD#80383 (1996). To listen to a couple of the recorded sound effects visit the  Public Affairs Office Web Page.

A second demonstration disc, Auditory Demonstrations II: Challenges to Speech Communication and Music Listening, has been produced to illustrate the impact of acoustical conditions and hearing loss on everyday listening situations. The disc also includes recordings of several styles of music that have been modified to demonstrate auditory changes due to progressive noise-related hearing loss.

For more information about this CD, see the publication below:

	Nelson, David A. and Cooper, Beth A. "Auditory Demonstrations in Acoustics and Hearing Conservation." Proceedings of Noise-Con 1998. (.pdf file)
	View the CD script.(.pdf file)
	View the track list.(.pdf file)

You will need to install the free Adobe Acrobat Reader viewer software to see the documents that are in Portable Document Format (PDF file).

Please give us feedback on Auditory Demonstrations in Acoustics and Hearing Conservation. We welcome your comments, error reports, suggestions for improvement of this product, and ideas for future products you'd like to see.

Subscribe to ATL's E-mail distribution list for periodic news on hearing conservation and acoustical testing topics.