As with other MEDIA FORMS, there is a specific language associated with radio production. In other words, there are a number of codes and conventions that radio productions follow. You will need to be aware of these codes and conventions if you are going to produce your own radio productions for your course or if you have to write about radio in your exam.
What strikes everyone, broadcasters and listeners alike, as significant about radio is that it is a blind medium.Crissell, Understanding Radio 1995 p3
A good source of information about radio can be found in Andrew Crissell’s Understanding Radio who seeks to ‘determine the distinctive characteristics of the radio medium’. For instance, there is a proximity with radio communication, in that it appears almost interpersonal, using speech as the primary mode of communication and yet it is a mass medium broadcasting from a few to many. It is of course essentially and primarily auditory, consisting of speech, music, sounds and silence. A really good account of how radio communicates to individuals is provided by Crissell in chapter 1 ‘Characteristics of Radio’, for instance, the relationship between radio and individual imaginations.
This appeal to the imagination gives radio an apparent advantage over film and television
Crissell p 7