This motion may be approximated by that of the tines of a tuning fork when struck, and could be seen as a sinusoidal or SINE WAVE from the trace of a pen attached to the tine and moving against paper ...

However, if every period of the sound is analyzed ... Compare: FOURIER SYNTHESIS, HELMHOLTZ RESONATOR, LAW OF SUPERPOSITION, SIMPLE HARMONIC MOTION, SOUND ANALYSER, TIMBRE. As well, it appears that ...