Stewart Filters

 

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.