What could be more important, than hear your mix as it is? There is no secret, that room acoustics design is playing main role here. Room treatment is very delicate and complex task to satisfy number of criteria and balance them out. There are so many different ways to approach design, they have been developed during number of last decades and still a lot of things are still empiric, so every acoustic designer have his own approach.
My design criteria is simple. Room should allow you to hear your speakers, so any masking should be eliminated, which means there must be no reflections coming earlier, that 20ms after direct arrival which are stronger, than -20dB relative to direct signal. After that reflections from 20ms till 50ms are critical for tonal perception of the signal so during that time spectral decay should be as even as possible without any frequencies standing out. After that follows room RT60 decay which has several parameters, like frequency dependent time, spread, spatial parameters and others which makes decay subjectively nice without causing any masking and coloration.
To achieve predictable results I use EASE Acoustical simulation software which is powerful analysis and prediction tool for room acoustics. Before and after treatment I do room acoustical measurements to ensure smooth design process and predictable result.
Here are some of my works:
Mastering studio in Rotterdam, Holland