An active loudspeaker by Hermann Scherchen

loudspeaker ball nullstrahler hermann scherchen
The rotating loudspeaker ball with 32 loudspeakers developed by Hermann Scherchen (source http://www.studiodabbeni.ch/exhibitions/20/hermann-scherchen:-alles-hörbar-machen-i).

Due to his intensive occupation with recording and reproduction of music the conductor Hermann Scherchen (1891-1966)  became aware of the enormous increment of people listening to music … read more

Bandoneonbook by Hans W. Koch

Hans W. Koch performing Bandoneonbook for laptop
Hans W. Koch performs Bandoneonbook, using the acoustic feedback between the internal microphone and loudspeaker of the laptop.

In Bandoneonbook (2003) by Hans W. Koch the acoustic feedback between the small internal microphone and loudspeaker of a computer is played … read more