The impact of audio feedback was explored by Henrik Knarborg during the rehearsal process on percussion instruments. The feedback was altered by digital effects and provided through headphones. By changing the sound to either very compressed (where all sounds are equally loud) or very sustained (where all sounds are prolonged and blend together), the experiment examined how these variations influenced Henrik’s approach to the rehearsal.
“I experimented with this technique while practicing Iannis Xenakis’ Psappha. The altered audio feedback significantly affected my performance, particularly in my interpretation of rhythm and pulse. Compression, in particular, led to a more precise and controlled approach, enhancing my ability to maintain a consistent rhythm. Sustained feedback, on the other hand, encouraged a greater focus on the overall development of the music and phrasing, with less emphasis on rhythm.
I also experimented with this method while practicing the marimba in a very small room. By adding a cathedral-like sustain effect, I was able to explore the long lines in the music, thus creating a more cohesive performance of the piece.
This experiment made it clear to me how manipulated audio feedback can change my perspective in the interpretive process and serve as a tool for new ways of self-evaluation, offering fresh insights into performance practice and technique.”