What is an Audio Interface?
An audio interface is a hardware device that essentially bridges the gap between the physical channels of audio in the analog portion of your studio, and the virtual channels of audio in your computer DAW.
It enables all of the music you record to be converted into a format your computer and DAW software can understand.
After you’ve processed the sound within your DAW, the audio interface then converts it from computer language back into a language your ears can understand.
Think of it like a translator that allows your ears and your computer to work in their own respective languages yet still communicate back and forth easily. Essentially it allows the “audio” to “interface” with the computer.