The Receptive Transducers converts only a small portion of the stimulus, but it is more than the brain can process.

The energy of the signal for vision is electro-magnetic waves. Short waves are transduced to be experienced as a violate color and long waves as red.

There are shorter waves than violate, however, that our transducers aren‰t equipped to convert (eg., xrays and gamma rays) and likewise longer waves (eg., radio waves).

Lined up on a football field from shortest to longest electro-magnetic waves, the light spectrum we are sensitive to would occupy the width of a...blade of grass! We are, in an absolute sense, severely visually impaired.
The case is similar for hearing. Curiously, however, this may be a good thing, since the brain can only process per unit of time, 7 bits of information. Try to remember a 14 digit telephone number and you will see what I mean.