Sean Olive’s Next Act Is Hear3D, a Spatial-Audio Startup for OEMs

The new Hong Kong company packs a startling amount of Harman experience into a B2B audio shop. Its public pitch is credible. Public proof remains thin.

Sean Olive’s retirement lasted about five months on paper.

Harman announced his departure in May 2025 after 32 years at the company. Hear3D Limited was incorporated in Hong Kong on October 9, 2025, and its website now identifies Olive as a founder and chief scientist. A Hong Kong seed investor lists a Hear3D funding round and company formation the following month.

This is no retirement hobby with a soldering iron and an optimistic Etsy account. Hear3D is pitching spatial-audio technology to the companies that make headphones, true-wireless earphones, televisions, soundbars, computers, AR/VR equipment and automotive audio systems.

The product is expertise

Hear3D has announced no consumer hardware, app, preorder campaign or retail price. Its product is an engineering stack offered to manufacturers.

The company describes portable audio libraries that can run on hardware ranging from PCs to low-power microcontrollers. It also offers real-time tuning tools, embedded-system design and psychoacoustic validation against competing products.

In plain English, Hear3D wants to help an equipment company move from “we should add spatial audio” to something that can survive processor limits, battery constraints, factory production and actual human listeners.

That distinction matters. Plenty of spatial-audio demonstrations sound convincing on a powerful development computer. Shipping the same effect inside a pair of inexpensive earbuds, without unacceptable latency or battery drain, is where the polite PowerPoint slides usually stop helping.

Hear3D says it can handle that less glamorous part.

What the spatial stack has to do

Spatial headphone rendering usually relies on head-related transfer functions, mercifully shortened to HRTFs. An HRTF describes how a sound arriving from a particular direction is altered by the listener’s head, torso and outer ears before reaching each eardrum.

A renderer applies those directional differences to the left and right channels. The brain interprets the resulting timing, level and frequency cues as a sound located somewhere outside the headphones.

Individual anatomy complicates the job. A generic HRTF can produce excellent results for one listener and vague, inside-the-skull mush for another. Front-to-back confusion and weak height perception are familiar failure modes.

Head tracking adds another ingredient. As the listener turns, the renderer updates the audio so a virtual source remains attached to the room, screen or game world. Excessive latency makes the sound field lag behind the motion. Sensor drift can slowly rotate the room while everyone involved insists the software is behaving perfectly.

Hear3D says its technology delivers real-time, head-tracked rendering on current mobile processors and DSP hardware while preserving stable spatial cues and audio-video alignment. Those remain manufacturer claims.

The public site supplies no motion-to-sound latency figure, processor load, memory requirement, power consumption or supported input-format list. It does not explain whether Hear3D measures, estimates or lets the user select an individualized HRTF.

A formidable research bench

Olive’s work at Harman helped establish controlled listening tests and objective measurements as practical tools for evaluating speakers and headphones.

He and Todd Welti, now Hear3D’s founder and principal scientist, were central to the preference research behind the Harman headphone target. The basic idea is that many listeners prefer headphones whose tonal balance resembles an accurate loudspeaker in a good room.

The underlying studies also found meaningful variation in preferred bass and treble. The Harman target is an evidence-based starting point. It did not arrive on stone tablets.

Olive served as president of the Audio Engineering Society and has published more than 55 research papers. In 2026, the AES Educational Foundation introduced the Olive Award for Excellence in Audio in his honor.

Welti brings an equally practical research history. His work spans headphone preference, binaural reproduction and low-frequency behavior in rooms. Owners of multiple subwoofers may know his name from research showing how placement and signal processing can improve bass consistency across a seating area.

The rest of the Hear3D roster fills in product development and implementation.

CEO José Arjol Acebal is an engineer with experience in hardware, acoustics and spatial audio. Hear3D says he served as a distinguished engineer at Harman through 2024.

CTO Alfredo Fernandez Franco is a former Harman senior director whose published patent work covers personalized HRTFs, real-time movement tracking and virtual sound-source rendering.

Chief product officer Shimon Shmueli combines engineering and industrial-design experience. Advisor Jason Riggs has worked across headphones, gaming, teleconferencing and immersive audio. Hear3D identifies him as Harman’s former vice president of intelligent audio.

There is real overlap among these people. This is a team with a shared working history, rather than six impressive biographies collected for a pitch deck.

The patents prove experience

That shared history appears in the patent record.

On August 11, 2026, a US patent was granted for a personalized audio system using head-related impulse responses, head-position sensing and interaural crosstalk cancellation. Sean Olive, Todd Welti and Alfredo Fernandez Franco are among its inventors.

Another patent, granted in 2024, covers a headphone calibration process that can generate a personalized HRTF. Its inventors include Jason Riggs and Fernandez Franco.

Both patents are assigned to Harman. They demonstrate that Hear3D’s founders have worked directly on relevant technology. They do not establish that Hear3D owns or licenses those inventions.

Hear3D’s site does not identify a patent portfolio or clarify which parts of its stack are proprietary.

The OSSIC chapter cannot be skipped

Hear3D also reunites several veterans of OSSIC, an earlier attempt to commercialize personalized, head-tracked 3D audio.

Jason Riggs was OSSIC’s co-founder and CEO. José Arjol Acebal served as co-founder and COO, while Shimon Shmueli was vice president of products.

The OSSIC X was an ambitious eight-driver headphone designed to adapt spatial playback to the wearer’s anatomy. Prototypes impressed several experienced listeners. Production was the disaster.

OSSIC shut down in 2018 after raising a corrected combined total of about $3.2 million through Kickstarter and Indiegogo, plus substantial seed investment. More than 22,000 preorders had reportedly been placed. The company said it built 250 headphones, with only a small number reaching ordinary Kickstarter backers. Most customers received neither a product nor a refund.

That history is relevant because Hear3D is once again promising to move individualized spatial audio from concept to production.

A different route to market

Hear3D is selling software, tuning and integration services to established manufacturers. It is currently asking no consumer to finance an unbuilt headphone.

That shifts the factory bill, inventory and retail support burden to an OEM customer. Hear3D can concentrate on algorithms, embedded implementation and validation, which are closer to the team’s demonstrated strengths.

The company’s repeated emphasis on factory integration feels deliberate. The OSSIC team learned an expensive lesson about the distance between a convincing prototype and mass production. Hear3D now places that distance at the center of its sales pitch.

Software ventures still fail, of course. They simply fail with fewer ear cushions stuck in customs.

Hear3D enters a crowded market

Experienced founders do not get an empty lane.

CEVA’s RealSpace already offers embedded spatial rendering and head tracking for earbuds, headphones, computers, XR devices and cars. It supports several established DSP and microcontroller architectures. In June 2026, CEVA announced a Microsoft-certified Windows implementation aimed at gaming-headset and PC manufacturers.

Dirac Virtuo targets similar OEM customers with spatial processing for headphones and existing stereo content. Waves Nx offers personalized head tracking and room emulation, while THX markets custom spatial rendering and product tuning.

These companies generally sell through negotiated OEM agreements, so public license prices are scarce. Hear3D has disclosed no pricing either.

Its differentiation will therefore have to come from measurable quality, computational efficiency, integration speed and the usefulness of its validation work. The founders may open doors. A manufacturer still needs a reason to sign the contract.

What this means for audiophiles

Hear3D is several steps removed from your next equipment purchase. A manufacturer must license or commission the technology, integrate it into a product and decide how much of the cost reaches the customer.

Spatial audio can be valuable for games, movies and virtualized multichannel playback. Music is more contentious. Processing that improves externalization can also change tonal balance, soften imaging or add an artificial room signature.

A useful implementation should preserve timbre, respond quickly to motion and include a clean bypass. It should also work consistently across listeners. A glowing “Spatial Audio” badge proves none of those things.

Hear3D’s connection to Olive and Welti makes the company particularly interesting here. Both researchers built their reputations around controlled listening and the relationship between perception and measurement. Hear3D says validation is part of its service.

Reporting note: Hear3D supplied no review hardware or private technical briefing. This article is based on public company material, corporate records, patent data and archived reporting checked on August 22, 2026.