Tuning

Tuning is the final step in the process of creating a sonorous and pure-sounding end product. Tuning a bell is not merely a question of measuring tones and then grinding away metal from the inside. The most important thing is to listen to the sound of the bell, the hum note and the overtones, and to how they sound in harmony or disharmony. Eijsbouts aims to produce a richness combined with tonal purity and sonority.

Besides using the computer to design bells, Eijsbouts uses it as an aid to achieving the desired tonal result, as well. However, the computer can never replace the human ear's role; the critical ear of the bell tuner will always have the last word in the tuning process.

During the tuning process, material is being shaved off using a lathe.

Measuring of the partials.

The bell tuners are listening in utmost concentration to the sound of a set of bells.