Which factor does NOT contribute to sound transmission through a medium?

The velocity of sound is indeed an important concept in understanding how sound travels through different media, but it does not directly contribute to the process of sound transmission itself. Instead, sound transmission primarily relies on the physical properties of the medium, including the vibration of particles, density, and temperature.

When sound waves travel, they create vibrations in the particles of the medium, which is essential for transmitting sound. The density of the medium affects how easily these vibrations can occur: denser materials can transmit sound more effectively in some cases, while less dense materials may allow sound to travel more slowly. Temperature also plays a role because it can impact the speed of particle movement in a medium; warmer temperatures typically result in faster particle movement, which can enhance sound transmission.

In contrast, while the velocity of sound is a measure that reflects how fast sound travels under specific conditions influenced by the previously mentioned factors, it does not itself contribute to the mechanisms of sound transmission. Instead, it is a resultant property that describes the speed at which sound moves through the medium once sound transmission has already been established.