Using new technology requires the pedagogue to research the areas of physiology
and acoustics that pertain to phonation. The technology of vocal amplification through sound systems becomes clearer to the user when an analysis defines the results and shows that microphones do not correct vocal faults - they merely amplify them. Some sound systems synthetically add in harmonics. In such cases, the singer is noted as a better recording studio singer than performing artist. Experience tells us that it is better to bring all the tools a voice requires - a full range of harmonics and a pleasing vibrato - with us, rather than rely on recording technology to supply the missing elements. The following sections demonstrate some applications of digital technology to vocal analysis and pedagogy.