Sonic grains can be made tangible

Granular synthesis is a form of musical sound generation where what is heard is constructed out of very brief sound fragments.

These fragments are called grains, and have a duration of 100 to 1 ms.

A question that is relevant to the real-time control of granular synthesis is: “At what level of detail could the state of ongoing sound generation be displayed via touch?”

A pilot experiment indicates that this is possible at the level of individual grains.

It seems that force pulses applied to the human fingerpad may display grain state, via their presence, duration, amplitude, and vibrational content.

Moreover, this can happen at the same timescale as that of sonic grains.