In 1959, for the first time, a Grammy award for 'Best engineered album, non-classical' was conferred.
Audio mixing is balancing the eq (equalization) of individual tracks. And mastering is optimizing the eq and overall level.
The average number of weeks to complete an audio engineering program is 48. when it comes to the cost of the program, in North America, its $15K-$20K.
However, the average cost of mastering a song is $300-$1,500. In the history of audio engineering, Al Schmitt won more wards than anyone.