Thomas D. Rossing
Phys. Dept., Northern Illinois Univ., DeKalb, IL 60115
To teach acoustical principles using only basic high school mathematics, acoustical phenomena should be emphasized rather than theory. Phenomena should be illustrated with simple demonstration experiments and with videotapes of phenomena that cannot be demonstrated live in the classroom. The voice source can be represented in the time domain by a waveform and in the frequency domain by a spectrum. Students should have early exposure to both representations and learn to appreciate their complementarity. Sound spectra and glottal waveforms resulting from different types of phonation are illustrated.