Finally, A Broadcast Mixer Designed for Music

The problem is, surround sound music content is virtually nonexistent, and up-mixing technology that turns stereo mixes into surround sound is designed for video, butchering music-centric content.

With Déjà Vu up-mixing technology, for the first time ever, broadcasters can deliver a 5.1 mix that doesn’t muck up music.

This all-new audio algorithm uses sophisticated yet lightweight, artifact-free processing that moves stereo mixes into the immersive era. Packaged as an OEM object, Déjà Vu is also plug-and-play ready for play-out servers or could be used off-line for file-based workflows.

How does Déjà Vu work? Here's a brief video explainer.

Modes Of Operation

Déjà Vu operates in multiple modes: mono, stereo (2.0, 2.1), quad (4.0, 4.1), and 5.1 surround. Other speaker configurations can be supported, including higher channels counts and non-standard speaker placement. There is access to adjust the individual levels for stereo input, master output, as well as individual channels. 

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Stereophonic audio is represented as two physical channels situated to the left and right of the listener. The perception of audio which sonically appears in the center of the two channels is created in the stereo mix through the summation, of the Left and Right channels, for the specific element that is directed to the center. This is known as ‘phantom center.’

For example, a mix may contain three elements: guitar in the left channel, bass in the right channel, and a vocal in the center. The phantom center channel vocal was created by mixing an equal amount of the vocal element to both the left and right channels. The listener hears guitar in the left, bass in the right, and vocal in the perceived center.

To create surround, cues are derived from the original stereo mix to generate a physical center channel. This is done through a static linear process. The isolated center channel, along with the stereo cues are used to derive the rest of the surround channels. The exception is LFE, which is created through a linear low pass FIR filter applied to the summed original Left and Right channels.

Leading in Up-Mix Technology

In the vast sea of up-mix technologies, DejaVU stands out. While many methods convert or generate ambiance, they often compromise on width or introduce unwanted artifacts. DejaVU's approach ensures the original spatial integrity of the sound, delivering an experience that's as close to the original recording as possible.There are two categories of Up-Mix algorithms: multichannel converters and ambiance generators. Multichannel converters, which include linear (“passive”) and steered (“active”) matrix methods, are used to derive additional loudspeaker signals in cases where there are more speakers than input channels. These methods are typically implemented in the time domain.

While linear matrix methods are relatively inexpensive to implement, they reduce the width of the front image. In a two-to-three channel Up-Mix, any signal intended for the center is also played through the left and right speakers; the channel separation between left and center, for example, is only ~3dB.

Matrix steering methods update the matrix coefficients dynamically and provide the ability to extract and boost a dominant source. These methods are particularly useful for content such as movie soundtracks, in which one source may be of primary interest at any given time, but the signal-dependent gain changes may cause audible side effects with music.

Ambience generation methods attempt to extract or simulate the ambience of a recording. The term “ambience” refers to the components of a sound that create the impression of an acoustic environment, with sound coming from all around the listener but not from a specific place. Ambience may include room reverberation as well as other spatially distributed sounds such as applause, wind, or rain. The goal of the ambience extraction is to increase the sense of envelopment, typically using the rear speakers.

Ambience generation methods may extract the natural reverberation from the audio signal (for example, by taking the difference of the left and right inputs, which attenuates centered sounds and preserves those that are weakly correlated or panned to the sides), or they may add artificial reverberation.

Wanna take her for a spin? You can download Déjà and try her for free here.

Experience Live 5.1 Surround Sound Music with Déjà Vu

Déjà Vu offers a transformative audio experience for entertainment venues and sacred spaces alike. Dive into a soundscape where every note envelops, every chord resonates, bringing alive an ambiance that feels palpably real. It's not just about hearing; it's about experiencing.

Déjà Vu advanced audio technology is designed for any venue or audio entertainment system, where surround is supported. It can also be used as a production tool to create surround content from existing stereo source files, such as music, or motion pictures.

And Déjà Vu operates with any stereo or two-channel audio source: CD, over-the-air radio (FM-Stereo/HD Radio), Satellite Radio, a mobile player (iPhone), and streaming.

Simplicity Meets Versatility

Understanding the complexities of music production, Déjà Vu is designed with creators in mind. Whether you're a budding artist looking to immerse your audience in a 5.1 surround sound experience or a seasoned producer aiming to reinvent classic stereo tracks, Déjà Vu offers a seamless transition. Its intuitive interface ensures that turning your stereo tracks into surround sound masterpieces is straightforward, without compromising the nuances of your original mix. From the subtlest notes to the most powerful crescendos, every element gets a spatial dimension

As the music industry evolves towards more immersive listening environments—from home theatres to high-end headphones—Déjà Vu ensures your tracks are future-ready, resonating with audiences across platforms and devices.

Redefining TV Audio with Déjà Vu’s 5.1 Surround Sound

Elevate your TV watching experience to cinematic heights with Déjà Vu’s 5.1 surround sound. Whether it's the heart-thumping action sequences or the subtle nuances of a dialogue, experience it with unparalleled clarity and depth.

Sporting Events

Especially during live sporting events such as football, baseball, or soccer. With our Déjà Vu the separation of audio between the broadcasters, the crowd's roar and on-field intensity is impeccable for a stadium-like feel.

The realm of Déjà Vu’s innovative technology isn’t just vast—it's transformative, bridging gaps across various commercial and consumer AV platforms.

Museums

Adaptive Audio for Diverse Exhibits: Each exhibit space is unique, and Déjà Vu ensures that audio is always optimized. From open-air spaces to enclosed galleries, audio playback is tailored to the environment, ensuring clear, uninterrupted learning experiences for all visitors.

Interactive Learning through Sound: Museums strive to create engaging and educational experiences. With Déjà Vu, audio exhibits are no longer just background noise. Instead, they become interactive soundscapes, guiding visitors through historical moments, art interpretations, or natural phenomena. Imagine standing amidst a historic battle or feeling the ebb and flow of an ocean, all powered by sound.

Live Venues

A New Dimension to Live Performances: Déjà Vu's surround sound system takes live performances beyond the stage, enveloping audiences in a 360-degree sonic embrace. It’s no longer just about watching a performance; it’s about being surrounded by it, feeling every note, every beat, and every emotion.

Seamless Acoustic Integration: For venues with acoustic challenges, Déjà Vu acts as a bridge, harmonizing audio outputs to create an evenly distributed sound stage. This ensures that every corner of the venue, from the front row to the back, gets an optimal listening experience. Déjà Vu creates 5.1 music mixes for venues that are so good, you’ll get a standing ovation.

Customizable Sound Experiences: No two venues are the same, and neither are their acoustics. Déjà Vu allows sound engineers to tweak and optimize audio outputs in real-time, ensuring that every performance is adjusted to the venue's unique characteristics, offering concert-goers a consistently high-quality experience.

Houses of Worship

Can not only stream in 5.1 to worshipers in attendance, but also stream in 5.1 to remote and virtual worshipers

Car Audio

The foundation exists, right now, to support 5.1 in most vehicles and Déjà Vu could be the core technology

Gaming

Real-time Immersion: In the gaming world, every sound cue matters. With Déjà Vu, players aren't just observers; they're part of the narrative. Footsteps, environmental cues, and action sequences gain depth, allowing players to truly inhabit the gaming universe.

Tactical Advantage: For competitive gamers, Déjà Vu's precise audio spatial recognition provides an edge. By accurately representing in-game sounds from their respective directions, players can respond faster to threats, making split-second decisions that could mean victory.

Elevate Your Home Audio Experience with Déjà Vu’s 5.1 Surround Sound

Surround sound isn’t just for theaters anymore. While traditional formats like SACD and DVD-Audio limited the availability of 5.1 content, Déjà Vu is here to revolutionize your home listening experience, making every song and show sound like a live performance.

Déjà Vu converts a stereo audio track into a surround audio track using a linear process that preserves natural sonic integrity, frequency response, and audio level, while faithfully supporting the music’s original production characteristics. And the best part? You don’t need to be an audio expert. Déjà Vu’s intuitive technology does all the work, making sure you get the best sound every time.

The Best 5.1 Surround Sound System Under $500

In the realm of audio technology, it's a rare feat to find a system that perfectly balances affordability with top-tier performance.

Déjà Vu is a testament to this balance. For under $500, you're not just investing in a 5.1 surround sound system; you're securing an unparalleled audio experience. While other systems in this price range might compromise on clarity or immersion, Déjà Vu stands out, delivering crisp, multidimensional sound that rivals even the most premium systems on the market. It's not just about saving money; it's about ensuring every dollar spent resonates with unmatched quality.