What term describes information or data that is perceivable by our senses, such as audio or video?

The term that accurately describes information or data that can be perceived by our senses, including audio or video, is intelligence. Intelligence refers to the actual content or messages that are conveyed through various forms of media, such as sound or visual imagery. This concept represents the meaningful aspect of communication, encompassing all types of information that engage our sensory perception.

In contrast, the other terms provided refer to different aspects of signals in communications. For instance, a modulating signal refers to the signal that varies another signal (the carrier signal) to encode the message, but it does not represent the content itself. Carrier frequency designates the frequency of the wave that carries the information through modulation. Signal processing involves manipulating signals to enhance or extract information from them but does not describe the content that we can perceive with our senses.