The Audio Engineer is the professional responsible for designing, implementing and testing solutions related to physical acoustics, electroacoustics, sound recording and spatial reproduction systems, audio and music synthesis and analysis, etc.
The responsibilities of an Audio Engineer are:
Physical acoustics
Domain, time, frequency, and time-frequency audio analysis (using spectrograms)
Room acoustics (measurement and analysis of room acoustic response)
Electroacoustics (measurement and analysis of microphones and speakers)
Machine listening (digital signal processing and artificial intelligence)