Microphone and microphone system

An infrared-ray cordless microphone system comprising:

• a microphone formed with a body having an upper end and a lower end;
• modulator means housed in said body for modulating an acoustic-to-electric converted sound signal through a predetermined process;
• infrared-ray transmitter means for transmitting an output infrared signal obtained by converting the modulated sound signal from said modulator means;
• said infrared-ray transmitter means includes an infrared-ray emitter for emitting said infrared signal and an infrared-ray permeable cover arranged at the lower end of the body through which the infrared signal passes;
• a sound output means having infrared-ray receiver means for receiving the infrared signal from said microphone;
• demodulator means for demodulating the received infrared signal;
• and
• electric-to-acoustic converter means for converting the demodulated signal into a sound signal.