Then, by simply placing a carbon microphone in the transmission line, the strength of the signal could be varied in order to add sounds to the transmission--in other words, amplitude modulation would be used to impress audio on the radio frequency carrier wave.
The strength of the signal could be varied in order. This was by simply placing a carbon microphone in the transmission line. This was then. This was to add sounds to the transmission. Amplitude modulation would be used to impress audio on the radio frequency carrier wave. This was in other words.