Is vocal auditory channel found in all forms of human communication via language?

The vocal auditory channel is the most common way humans communicate via language, but it is not the only one.

Here's why:

* Ubiquity: Most human communication relies on spoken language, making the vocal auditory channel the most prevalent.

* Other channels exist: Sign language, written language, and even tactile communication (like braille) are all examples of human language communication that do not rely on the vocal auditory channel.

* Evolution of language: While vocal communication likely came first, the development of other forms of language shows that humans are adaptable and capable of expressing complex ideas in different ways.

Therefore, while the vocal auditory channel is dominant, it is not universal in human communication.