Microphone memoirs of the horse and buggy days of radio.

I went even further, then; for at night, when the whistling commenced, I made a microphone test.

A microphone transmitter was arranged so that the vibrations of the voice would affect the stream of gas flowing in a sensitive burner.

Not if I die stopping it!" A familiar voice, issuing from the lips of the fauna voice made natural and audible as the living human tones, by means of a delicate microphone attachment inside the bronze headtautened his nerves.

Direct connection now being established with a microphone secreted in the base of the brass lamp on the study table, three floors below, and the perforated side of the microphone detector serving as an earpiece, one could hear every word uttered by the conspirators.