Yet another acronym! Just one more to go along with PAM, PCM, ADPCM, MP3…..
This one (Resource Interchange File Format orRIFF) is a container file i.e. contains more than one type of data.
It is was created by Microsoft and IBM (according to Wikipedia anyway) as a multimedia content file. The header (first section) of the file determines what kind of data is in it. The picture below explains it better than I can.

Here is the slide from todays lesson: