Abstract
As voice waves cannot propagate through water, divers need to find alternative ways to communicate with each other. Researchers have investigated different approaches to develop underwater communication systems. Designs differ in complexity, quality of voice signal, and cost. In this study, transmission of a voice signal in a water medium via light-emitting diodes (LEDs) of different wavelengths was experimentally investigated. The scattering of different wavelengths was examined, revealing that light from LEDs with shorter wavelength exhibits less scattering. The maximum propagation distance that can be reached using a 460-nm LED is observed to be 33.3 m.