It is clear that all transcommunicators, by means of both old or new techniques, use equipment with microphones to record audios. Either with outdated.
Microphone types and specific microphone techniques
Physics 434 Module 3 - T. Burnett 1 Physics 434 Module 3 Acoustic excitation of a physical system.
Sound Audio – All microphones convert sound waves into electrical energy – the audio signals.
New phenomenon: recording without microphone?
