sound channel

sound channel

[′sau̇nd ‚chan·əl] (acoustics) A layer of seawater extending from about 2300 feet (700 meters) down to about 4950 feet (1500 meters), in which sound travels at about 1485 feet (450 meters) per second, the slowest it can travel in seawater; below 4950 feet (1500 meters) the speed of sound increases as a result of pressure. (electronics) The series of stages that handles only the sound signal in a television receiver.