The engineers and audio experts at SRS understand both how sound is transmitted and how sound is perceived, and so we developed a way to restore a more natural sounding audio to your everyday audio devices. For WOW HD, we combined several advanced technologies that provide high frequency clarity, restore the width and depth of sound, pound the bass without actually having to move a ton of air and elevate the sound to the correct level.

Immersive 3D Audio. Ever heard the term 'spatial cue' used in casual conversation? We use it all the time around here, but what it means is being able to perceive or 'see' different parts of the audio in different parts of space—like hearing a car crash just left of center and ambulance sirens on the far right. SRS technology restores these spatial cues that are normally lost in playback processing, and makes your audio field remarkably wider and deeper. The processing curves are complex, and have as much to do with how people perceive sound as they do with physical playback. But the result is enthralling.

Improved Bass. We know tiny speakers cannot reproduce deep bass. It's physically impossible. But bass sounds always come with overtones, and if ears are presented with all the overtones, the brain fills in the 'missing fundamental.' SRS patented bass technology was based upon an amazing combination of psychoacoustic understanding and technical know-how, and manages to restore the sensation of deep bass. It identifies the bass notes that cannot be reproduced, and restores and boosts the overtones. It's all in your head, courtesy of some nifty audio wave processing, and the restoration really is magic.

High Frequency Clarity.Techniques used in digital compression or broadcast transmission can reduce the clarity of audio content, leaving you with a rather lackluster audio experience. SRS' premium high definition technology restores clarity by enhancing the high frequency content, bringing into focus the rain falling or wind howling in a movie scene or the cymbals and acoustic guitar strumming in your favorite song.

Elevated Sound. Audio speakers get put where it's most convenient. That convenience may be for design or manufacturing processes, and not necessarily audio fidelity. Which is why we created a technology to restore sound to its proper level, vertically. We know ears are very good at determining the direction of sound. We use that knowledge—a product of years of research—to contour the audio ever so precisely, and make the audio sound like it's coming from where it's supposed to. Not way down low or up high or off-axis, but right where it's supposed to be.

With SRS WOW HD, each technology is specifically tuned—individually and together—for every single make and model. There is no one size fits all for audio—every player of every type is tuned deliberately and precisely to give that specific device the absolute best sound possible.

The original Circle Surround® was a breakthrough surround sound processing technology that not only decoded Circle Surround encoded broadcasts and DVDs, and decoded other matrixed content such as Dolby Pro Logic II and DTS, but also created a surround sound experience with non-matrixed stereo content.

The upgraded Circle Surround II adds 6.1 channel capability in addition to advanced features that make voice and dialog more clear, and bass stronger and deeper.

Dialog Clarity. Audio creators today have more sound tools than ever to work with, and more channels to put sound in. So naturally, they create rich, dense audio for any purpose—movies, TV, music and games. Problem is, with such heavily layered audio tracks, sometimes the vocals and dialog get lost in the shuffle … or buried under sound effects. Dialog Clarity boosts the frequency range of the human voice in a way that makes the human voice rise above the audio effects, so you can hear clearly every word you're supposed to hear.

Improved Bass. We know small speakers cannot reproduce deep bass. It's physically impossible. But bass sounds are always accompanied by overtones, and if your ears are given all the overtones, your perception will fill in the 'missing fundamental.' SRS' patented bass technology is based on an amazing combination of psychoacoustic understanding and technical know-how, managing to restore the sensation of deep bass. It identifies the signals that cannot be reproduced, and restores and boosts the overtones.

Circle Surround II also processes mono signals, offering an enveloping experience without the audible artifacts that had plagued prior mono-to-multichannel technologies. The mono signal is first separated into simulated stereo channels, and only then expanded to simulate surround sound.

Circle Surround II is the most sophisticated and versatile surround sound decoder and processor available today.