Designed for applications where traditional passive treatments and conventional ANC fall short, Plasmapanel excels in complex, compact, or noise-critical settings—such as HVAC ducts, kitchen rangehoods, industrial enclosures, or reverberant 3D spaces. Whether installed in isolation or deployed in scalable arrays, Plasmapanel enables precise, programmable acoustic management without compromising space, aesthetics, or system integration.

Breakthrough Plasma-Based Technology

At the core of Plasmapanel is a high-voltage electrode array that creates an ionized gas layer using corona discharge. This ionized field is precisely modulated to generate pressure waves in real time, eliminating delays typically caused by mass or mechanical compliance. As a result, the panel functions as a responsive, solid-state sound source for active noise control. Unlike conventional porous absorbers or traditional active noise cancellation systems, the Sonexos plasma-based approach enables deep-subwavelength, ultrawide-bandwidth control—including efficient attenuation of low-frequency noise—all without moving parts.

AI-Enabled Acoustic Adaptation

Plasmapanel constantly senses its acoustic surroundings through embedded microphones and responds in real time using the Sonexos AI-enabled software. This software can intelligently optimise its performance whether in active absorption, cancellation, or redirection modes, adjusting automatically as the acoustic environment evolves.

Whether compensating for changes in airflow, temperature, or mechanical load, Plasmapanel ensures consistently optimal performance—especially in dynamic environments like ventilation systems, vehicle cabins and domestic appliances, such as rangehoods and clothes dryers.

Engineered for Seamless Integration

With a profile thinner than 30 mm and weight under 8 kg/m², Plasmapanel is easily installed into ducts, ceilings, or appliance structures where space and access are limited. The system supports custom dimensions and curved or non-standard geometries, enabling precise integration into architectural, industrial, or OEM product designs.

Ethernet and USB interfaces make configuration and firmware updates straightforward. Whether deployed as a single smart surface or across a networked array, Plasmapanel brings unmatched versatility to noise-critical applications.

Features

Solid-State AI-Driven Noise Control
  • Plasma-based sound generation for non-mechanical, broadband noise control
  • AI-powered adaptation adjusts output in real time for absorption, cancellation, or redirection
  • Embedded microphones and sensors enable adaptive system response
  • Integrated high-voltage Class-D amplifier delivers efficient, high-power signal drive
Lightweight, Scalable & Connected
  • Ultra-slim (<30 mm) and lightweight (<8 kg/m²) design for easy system integration
  • Customizable sizes and shapes to fit ducts, panels, or enclosures
  • Ethernet and USB interfaces for setup, monitoring, and synchronization
  • Operates stand-alone or as part of scalable, coordinated arrays

Benefits

Eliminates Low-Frequency Noise Where Others Can't
  • Effective control of low-frequency noise (30–1,00 Hz) beyond the reach of passive treatments
  • Consistent broadband response, independent of sound source direction
  • Adaptive to changes in environment, flow, and mechanical load
  • Scalable for both compact spaces and large 3D environment
Installs Easily—Fits Anywhere, Works Everywhere
  • Installs easily on walls or in tight spaces and appliance housings
  • Blends seamlessly behind acoustically transparent materials or within OEM designs
  • Flexible across commercial, industrial, and residential use-cases
  • Maintenance-free operation with no moving parts or mechanical wear

Application

Plasmapanels offer versatile configuration and deployment options to reduce noise and improve the acoustics in a wide range of environments:

Automotive

  • Passenger vehicle cabins
  • Light truck and minivan cabins
  • Commercial vehicle cabins
  • Vehicle HVAC and exhaust systems

Mass Transportation

  • Private aircraft cabins
  • High-speed train cabins
  • Passenger aircraft cabins
  • Crew and first class cubicles

Consumer

  • Domestic appliances
  • Building HVAC systems
  • Professional audio installations
  • Residential spaces

Industrial & Commercial

  • Industrial HVAC
  • Plant control rooms
  • Machine rooms
  • Extraction fans

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About us

Sonexos is a Swiss engineering company specializing in high-performance audio and sound control. We develop and supply advanced solutions for audio enhancement, noise and vibration control to clients in the consumer, transportation, automotive and industrial sectors.

A core innovation is our Plasmapanel technology—an active acoustic solution that achieves broadband sound absorption in enclosed spaces such as vehicle cabins, rooms, offices, ducts, and machinery. Unlike passive treatments that rely on mass or porous materials, Plasmapanel actively absorbs the energy of incident sound waves upon contact, delivering lighter, more space-efficient noise reduction across a wide frequency range.

 

Beyond our R&D capabilities, Sonexos provides strategic advisory services to help clients accelerate innovation in sound and acoustics. Our offerings include product design consultation, acoustic benchmarking, system integration support, and scalable manufacturing guidance—ensuring successful deployment of advanced technologies and long-term differentiation in the marketplace.

By combining deep technical expertise with a pragmatic, system-level approach, Sonexos empowers companies to elevate acoustic performance where it matters most – where sound enhances experience.