…feedback agent provocateur…mic connected to speaker, mic distance controlled by feedback volume (loud feedback…more distance…less feedback…less distance…more feedback and so on and so on)
![](https://praxistest.cc/wp-content/uploads/2012/09/Bildschirmfoto-2015-08-26-um-14.09.46-1038x576.png)
…feedback agent provocateur…mic connected to speaker, mic distance controlled by feedback volume (loud feedback…more distance…less feedback…less distance…more feedback and so on and so on)