Whispp, a Dutch AI company developing on-device voice reconstruction technology, has raised €5M in a follow-on round led by LUMO Labs alongside strategic angel investors, complemented by non-dilutive funding from the European Innovation Council Accelerator.
Founded in 2020 and based in Leiden, the company will use the investment to advance its AI models, develop new products, expand its intellectual property portfolio, and deepen partnerships with global device manufacturers and semiconductor companies.
Addressing The Market Opportunity
Existing speech enhancement solutions are primarily designed to reduce background noise and improve audio clarity. Whispp operates at a different level, using AI to reconstruct speech characteristics that have been diminished or lost entirely, rather than simply cleaning up what remains.
The technology addresses two distinct needs simultaneously. For people with voice impairments and speech disorders, it offers a way to communicate more naturally and confidently. For the broader consumer device market, it represents a new class of voice experience that device manufacturers can bring to their products. As AI continues to reshape how people interact with technology, the demand for communication tools that are more seamless, effective, and inclusive is growing across both markets.
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How The Technology Works
Whispp’s proprietary voice AI runs in real time, entirely on-device, and across any language. The system transforms whispered speech into a clear voice that closely matches the speaker’s original vocal characteristics, enabling private and discreet communication without requiring network connectivity or cloud processing.
The on-device architecture is central to the company’s strategy for working with mobile and PC original equipment manufacturers, as it allows Whispp’s voice features to be integrated directly into hardware without dependence on external infrastructure. The company began by developing the technology for people who had lost their voice to illness or who stutter severely, and is now expanding into broader consumer applications while continuing to develop medically validated assistive tools for those who need them most.
Growth And Market Traction
Founded in 2020, Whispp has built its technology to a stage where LUMO Labs, its lead investor, has made a follow-on commitment alongside new strategic angel investors. The European Innovation Council Accelerator has also provided non-dilutive funding, reflecting recognition of the technology’s potential impact across both assistive and mainstream communication applications.
Expansion Plans
The €5M round will fund continued development of Whispp’s proprietary AI models, the launch of new products, and the expansion of the company’s patent portfolio. A key focus is deepening partnerships with global device manufacturers and semiconductor companies to accelerate integration of Whispp’s voice reconstruction technology into mobile and PC platforms at scale.
Looking Ahead
Joris Castermans, Founder and CEO of Whispp, described the company’s trajectory: “With this funding round we make a giant leap towards global implementation of our technology with mobile and PC OEMs. The current developments at Whispp exceed my boldest dreams I had for this stage of the company.”
Andy Lurling, Founding Partner at LUMO Labs, explained the evolution of the firm’s conviction in the company: “We initially invested in Whispp because of its mission to help people reclaim their voice. Since then, it has become clear that the technology can address a much broader challenge: revolutionizing the quality and accessibility of digital communication. Whispp is uniquely positioned at the intersection of these developments, and we look forward to continuing our support for the team as they scale their impact and bring this technology to a much broader audience.”
About Whispp
Whispp is a Dutch AI company founded in 2020 and headquartered in Leiden. The company develops real-time, on-device voice reconstruction AI that transforms whispered speech into a clear, natural voice that reflects the speaker’s original vocal characteristics. The technology runs in any language without cloud dependency and is designed for integration into mobile and PC devices through partnerships with global hardware manufacturers. Whispp originally developed its platform for people with voice impairments and speech disorders and is expanding into broader consumer and medically validated assistive applications.
