Stereo to 3D Audio Conversion



Turn your music and film audio into something spatial

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Stereo to 3D Audio Conversion

VRX Audio converts any stereo music or film audio into 3D spatial audio in realtime. We support head-tracked spatial audio by upmixing to Ambisonics and we support fixed position spatial audio using our custom HRTF models. This can be rendered back to any two channel format and enjoyed on any set of headphones.


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VRX Upmix

Spatial Audio Stem Generation

VRX Upmix is our service to convert stereo audio into spatial stems using our patented source separation technology. The spatial stems can then be fed into any 3rd party spatialization engine such as Dolby ATMOS. Alternatively, use our stereo to Ambisonics conversion which is supported by YouTube and many VR headsets.


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cloud and embedded 3D sound

License VRX Audio Algorithms

Got a hardware or cloud based product? License VRX Audio algorithms to run in realtime on your smart headphones, tablets, phones, laptops, VR headsets or microprocessors. Our technology is available as a SIMD optimised C++ library and as a set of CLI tools for use in your cloud based streaming product.


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How it works

For Content Owners

Are you a record label, film studio or indie creator? Would you like to bring new life to your existing stereo content or rerelease it for spatial audio and VR platforms? Get in touch, transfer your stereo files and we process them within 48 hours. Our fixed position spatial audio is fully compatible with Spotify, YouTube, Apple Music and all streaming platforms. Our head-tracked spatial audio is supported on YouTube and any VR systems which support Ambisonics.


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For Content Streamers

Are you a music or video content streaming platform? Most of your audio content is probably in stereo. Content is increasingly being consumed on smart headphones and VR headsets which can deliver spatial audio. Want your content available as spatial audio? Using VRX Audio CLI tools you can add our stereo to spatial audio conversion to your transcoding pipeline and deliver all of your content as head-tracked spatial audio. Contact us to discuss licensing.


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For Hardware Manufacturers

Are you a hardware or chip manufacturer? Would you like your product to be able to convert stereo to spatial audio in realtime on device? License VRX Audio algorithms to run in realtime on your smart headphones, tablets, phones, laptops, VR headsets or microprocessors. Our technoology is available as a SIMD optimised C++ library and as a set of CLI tools for Linux, Mac OS and Windows. Get in touch today to discuss licensing options.


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Get in touch to arrange a demo

Frequently Asked Questions

3D Audio broadly describes a class of spatial audio effects which allow for the realistic placement of sound sources anywhere within three-dimensional space, including behind, above or below the listener. This is not possible with normal stereo headphone listening which only allows for a sound source to be placed somewhere between your left and right ear. As a result, the sound always feels like it is coming from inside your head. 3D audio overcomes this limitation and is already widely used in gaming and virtual reality. The principal benefits of 3D audio are externalisation, directionality, head tracking, immersion and realism.

Realism: 3D Audio experiences aim to sound as similar to real world listening scenarios as possible and have several benefits over stereo listening on headphones. For both film/tv and music, the principal benefits of 3D audio are externalisation, directionality, head tracking and realism.

Premium Content: Fans love additional content such as remixes and alternate versions. A 3D Audio mix is a truely unique experience and a worthy addition as premium content to any release. Similarly, audiophiles seek out the most natural listening experiences and would appreciate the availability of a dedicated 3D audio mix when listening on headphones.

Promotional Benefit: There is great promotional benefit to releasing updated versions of existing content. Remastered albums and films are a great example of this. It often results in a flurry of promotional activity which creates renewed interest in the artist or film.

Preference: Even beyond extrinsic reasons for converting to 3D audio, many people just prefer the experience over stereo because it is more natural sounding and less fatiguing. Check out some of our demos to experience the difference.

For any content being created today, there is already a multitude of 3D audio tools and systems. However, these systems assume you have access to the individual source audio tracks in order to create a 3D audio mix. This is a huge limitation if you do not have access to the individual audio tracks. The majority of previously recorded music, TV shows, films and youtube videos were recorded or mixed down to stereo. This legacy content will continue to be consumed on new VR/AR/MR platforms. However, the audio presentation will be limited to stereo unless there is an efficient way to convert it to 3D audio without unearthing the multitracks at great expense.

That's where VRX Audio comes in! Our patented source separation and spatialization technology allows for any stereo audio recording to be separated into any number of individual stems, which are then spatialized independently to create a truly immersive 3D audio mix. The end to end process is fully automatic requiring no user intervention. As a result, our technology could run on any end-user device in real-time and convert all incoming stereo audio to 3D audio on the fly. VRX represents a significant improvement over stereo within any VR/AR/MR experience. We want to bring VRX to all of the legacy audio content in the world.

Contact us and our team will process any content you send us within 48 hours. We support all audio and video file formats.

Are you a hardware manufacturer making headphones, phones, tablets TVs, laptops or mircoprocessors? VRX is also available for license to run in realtime in your products. Our technoology is available as a SIMD optimised C++ library and we have CLI tools for Linux, OSX and Windows for testing or cloud deployment. Contact us for more information.

VRX will soon be available as a cloud based web application for efficiently converting large volumes of video or audio content into 3D Audio. Just drop your files in the app's file manager view and download them when they are ready. The processing is between 5x and 10x realtime so you won't have to wait long! Just a few minutes.

It depends, every piece of content will react differently to the VRX spatialization process. VRX uses the stereo pan positions as cues to decide where to place the sources in the spatialized sound field. Content with a wide stereo presentation will result in a more convincing spatial presentation. Content which is closer to a mono presentation will respond less favourably to the process.

Our technology uses generic HRTFs meaning that each person will have a different perception of how much spatialization has been added. Generic HRTFs are suitable for most people but may not work for some.