What is a kathodophone? The kathodophone was a commercially unsuccessful mic with no moving parts that detected sound waves by measuring the change in density of ionized air between an anode and a cathode. The failure of this type of mic was due to unavoidable dust particles, which created too much noise in the mic signal.
Kick Drum Tunnel:
What is the kick drum tunnel miking technique? The kick drum tunnel is a miking technique that places a microphone at the end of a tunnel made of carpet, cardboard, or a sound blanket that extends off the kick drum. The kick drum tunnel provides the mic with more room sound and less bleed from the other drums.