Code Number: 3C55.85

Demo Title: Acoustical Filters - Stewart Filters

Condition: Good

Principle: Filters and Filtering

Area of Study: Oscillations & Acoustics

Equipment:

Stewart Filters, microphone, small speaker with wave generator or laptop computer

Procedure:

We have available to us several filters built by G. W. Stewart during his tenure here at the University of Iowa. Stick a small speaker in one end and a microphone in the other to see their spectrograms. We usually use MatLab for this.

Disclaimer

These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist. The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose. The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources. Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks. These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage. Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.

Instructional Resources and Lecture Demonstrations

3C55.85 - Acoustical Filters - Stewart Filters

Disclaimer