The Quilcom SIM-KZ is a Kazoo simulating effect plugin designed to be used with a microphone input to process your humming voice. If you want to learn more about this truly remarkable instrument and its history have a look in the background folder. Click on the picture to download the zip file which includes 32 and 64 bit plugins, the FlowStone schematic and the User Guide. If you get a copy of FlowStone you can examine the schematic and use whatever modules you want in your own designs. The schematic isn’t needed for the plugins to work.