MultEQ

At the core of everything Audyssey creates is our first technology, MultEQ™. Based on 6 years and $6 million of research at the USC Immersive Audio Lab, MultEQ delivers accurate, enveloping, and distortion-free sound in any listening environment. It has won numerous awards and is the basis of several other Audyssey technologies. MultEQ has been established as the standard room correction technology for today's leading audio products.
Measurement
Room distortion is caused by sound reflecting from surfaces within the listening space. A patented time domain method was developed to accurately capture the negative effects of these reflections at multiple locations.
Clustering
The distribution of the problems caused by reflections is not uniform. Traditional averaging techniques give equal weight to each problem. Audyssey developed a new method to automatically assign greater importance to larger problems, therefore using processing resources more effectively.
Equalization
With this information, MultEQ creates equalization filters for each channel resulting in improved soundstage, accurate tonal balance and smoother bass.