Definition - What does Monaural Sound mean?
Monaural sound is also known as monophonic sound or simply mono.
Techopedia explains Monaural Sound
One of the biggest benefits of using monaural sound is in the fact that the same sound level reaches all listeners. In other words, unlike stereo audio systems, monaural systems do not convey any sensation of location or depth. This factor is taken advantage of in well-designed mono systems for speech reinforcement and speech intelligibility. Compared to a stereophonic audio signal, a monaural signal has better signal strength with the same power.
Examples of monaural sound systems are mono split cluster systems and single-channel center clusters.