Abstract
A hypercard stack has been written that provides an interactive approach to the basic concepts of acoustics. It is assumed that the students will know little or no mathematics. Graphical displays are provided of wave motion and the superimposition of waves. Students can both see and hear the effect of adding waves of their choice. Concepts such as the Nyquist frequency, vibration of air in a tube and in the vocal tract, and the parameters required for synthesizing speech are demonstrated. A section of the stack is concerned with the properties of damped exponential waves. The notions of the addition of sine and cosine waves and the correlation between two waves are demonstrated, as a basis for understanding Fourier analysis. The stack is copyrighted, but is available for nonprofit use at a nominal charge from the author.
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