Immersive sound that connects people
with stories, spaces, and themselves

From XR and mental health to museums and art - we design sound experiences that move people beyond the ordinary

Trusted by leaders in XR, healthcare, and culture

Sphere of Sound creates award-winning immersive audio for XR, mental health, museums, and art.
From subtle details to full sonic worlds, our sound design connects people with stories, spaces, and themselves.

What partners say

  • “Jelmer and the Sphere of Sound have consistently delivered incredible audio experiences to accompany our art in both physical spaces and digital productions."

    Micah Johnson, Artist

  • "It was fantastic to work with Jelmer. Jelmer provided our VR film with spatial audio. With his own insight, he managed to elevate the film to a higher level because he understands how VR works as an immersive media technology. Additionally, he was able to compensate for our shortcomings in visuals with audio. Jelmer is the go-to person for spatial audio."

    Michel Verspagen, Ubuntu-Media & VR Bioscoop

  • "I have had the privilege of working with Jelmer on a great range of productions for various, (often quite demanding), clients. Whether directing vocal talent to produce a pop song, or composing an intricate orchestral score, he always goes above and beyond expectations. I would highly recommend him for any production where music is key."

    Frank Oly, Oly & Reed Productions

  • "A pleasant and flexible collaboration, leading to an Immersive Audio product by Sphere of Sound, where the Ameland feeling truly comes to life."

    Jelle Westra, Amelander Museum Foundation

  • "Jelmer helped Beemup realize and bring to life our showcase. A process full of trial and error, the full immersive audio experience was impressively laid down by Jelmer. Besides a great collaboration on content, our production really got a boost. Highly recommended!"

    Alex van der Baan, YOM

  • "For me, Jelmer is a true audio and sound artist. With extreme sensitivity and a unique way of creating sound, he is an added value to my VR company VRROOM. Especially jamming and testing together with 3D sound combined with Virtual Reality makes Jelmer a great partner for us. Both in personality and professionalism a true fine audio specialist."

    Koen Toornvliet, VRROOM

  • "It's a true pleasure and honour to work with an industry expert like Jelmer"

    Clemens Amon, atmoky

I’m Jelmer Althuis, founder of Sphere of Sound. I design immersive, spatial audio for XR, mental health, museums, and art.
In the past five years I’ve created 150+ soundscapes (100+ for VRelax’s therapeutic VR library) and led award-winning installations like Oorlog Dichtbij.
2× ISA 2025 winner. My work blends art, science, and clear outcomes: calmer users, deeper presence, stories that stick.

Ready to make your story heard - and felt