What is Audyssey’s Dynamic EQ and Dynamic Volume?
By Dennis Burger
Audyssey’s Chris Kyriakakis explains how these automatic sound control features work and what we can expect in the future.
If you’ve shopped for a new A/V receiver anytime in the past few years, you’ve no doubt seen Audyssey’s logo join the ever-growing collection of silk-screened faceplate emblems. The company’s MultEQ automatic room correction system has quickly become the de facto standard for equalization in home theater, and is included these days as standard equipment on receivers and preamps from Denon, Integra, Onkyo, NAD, and Marantz. Recently, Audyssey introduced two new sound-shaping technologies to the market, dubbed Dynamic EQ and Dynamic Volume, which take the concept of automatic room correction to the next level. To get the skinny on these new features, we sat down with Chris Kyriakakis, founder and chief technology officer of Audyssey, to discuss their origins and the problems they hope to address.
Q. Let’s talk about Audyssey’s Dynamic EQ feature, which we’ve seen popping up on A/V receivers as of late. How does it work?
A. Well, Dynamic EQ is an extension of our room correction technology, MultEQ, so let’s talk about that for a minute first. MultEQ was designed after lots of research at the University of Southern California, where I teach along with Tom Holman, one of our co-founders. It’s unique because it was the first [room correction solution] to address how you take sound measurements in a room at multiple positions, and how you combine those measurements to make filters that fix audio problems over a large listening area.
The most common way of doing room EQ is that you put a microphone at your main listening position, play some pink noise, and then you look at the frequency response and make an inverse of that…
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