The papers of A.R. Morgan focus on three areas of electronics. They are the electronics of permanently polarized electrostatic microphones, SONAR pulse projection, and noise cancellation of submarine pumps.

The permanently polarized electrostatic microphone (electret) was the most current in 1962 after a long evolution of microphones which began with the carbon microphone invented by D.E. Hughes in England and by Thomas Edison and Emile Berliner in the United States. Edison was awarded a patent in 1877 amidst a bitter controversy regarding who was the first to transmit speech via the carbon microphone. Controversy was further extended when witnesses declared that Hughes had transmitted speech through a carbon microphone years earlier in England. Hughes is credited with the invention. Following 85 years of improvements to the microphone, Morgan experimented with a microphone which could be used without a source of wired electricity, operating with a permanently charged capacitance device offering more flexibility without being wired to just one location during use.

Morgan also worked on the development of a projector to provide improved SONAR (SOund NAvigation and Ranging). The pulse SONAR projector transmitted a pulse of electrical signals through water which bounce off of a target and returns in the form of sound signals, measuring the length and width of the pulse, translated into time and size of the target. Morgan's work with a superpower pulse projector lead to his patent for an underwater object locator in 1960.

Morgan's experiments with signals through water lead him to experiment with the cancellation of noise created by a pump in a submerged submarine. His work with noise control contributed to the electronics of stealth movement and underwater communications of submarines, especially during military engagements.