The Plasmapanel AirFlow Platform™ is designed for airflow applications where traditional silencers, foams, and linings struggle to deliver effective low-frequency noise reduction. As a scalable platform that can be shaped and configured to suit a wide range of system geometries, it supports applications from compact domestic appliances and residential ventilation units through to large-scale HVAC ducts. This flexibility enables precise, programmable acoustic control without imposing pressure loss, added bulk, or the hygiene and maintenance concerns associated with porous materials.

Airflow-Optimised Plasmadrive

At the core of the Plasmapanel AirFlow Platform is a solid-state acoustic metalayer driven by a low-power plasma interface. This interface modulates pressure at the air boundary in real time, achieving true absorption rather than the reflection or leakage typical of passive silencers. The platform delivers wide-band control from 30 Hz to 1500 Hz, including efficient attenuation of low-frequency fan and compressor noise, all without moving parts or restrictive baffles. The AirFlow Platform maintains stable acoustic performance in duct velocities up to 10 m/s, ensuring compatibility with modern ventilation, HVAC, and appliance airflow designs.

Powerful AI-Enabled Sound Control

The Plasmapanel AirFlow Platform continuously monitors its acoustic and flow environment using embedded sensing and AI-enabled DSP. The system intelligently optimises absorption as fan speeds, flow conditions, or tonal components change, maintaining stable low-frequency performance across varying operating states. Whether managing turbulence in ducts, variable-speed ventilation, or appliance cooling noise, the AirFlow Platform delivers consistently high acoustic performance throughout the duty cycle.

Versatile & Scalable Form-factor

With a slim profile, low mass, and modular construction, the Plasmapanel AirFlow Platform is easily integrated into duct walls, around fan housings, or along external conduits where space and geometry are constrained. It supports custom dimensions and scalable acoustic surface area, enabling alignment with diverse appliance, ventilation, and HVAC designs. Consuming only a few watts and eliminating the need for petrochemical foams or fibrous fillers, the AirFlow Platform offers a solid-state, maintenance-free solution that supports long-life reliability and ESG objectives in airflow-driven systems.

Features

Solid-State & AI-Driven
  • Plasma acoustic interface provides wide-band active absorption
  • AI controller adapts to airflow, fan speed, and tonal changes
  • Integrated sensors deliver real-time adaptive response
  • High-efficiency HV drive supports stable, low-power operation
Compact, Intelligent & Connected
  • Slim (<30 mm) modules fit inside ducts and appliance housings
  • Lightweight design mounts easily on walls, bends, and diffusers
  • Works with straight, curved, and custom duct geometries
  • Supports single-module or multi-module system scaling

Benefits

Eliminates Noise Where Silencers Fail
  • Reduces noise without blocking or restricting airflow
  • Installs cleanly in tight or complex duct locations
  • Compatible with diverse duct layouts across all HVAC tiers
  • Delivers consistent performance from small to large installations
Easily Installed in Ducts & Appliances
  • Fits where silencers and foams cannot physically be installed
  • Maintains airflow by avoiding baffle- and foam-related losses
  • Integrates behind OEM covers with limited redesign impact
  • Requires no mechanical maintenance or material replacement

Applications

The Plasmapanel AirFlow Platform offers flexible configuration and deployment options to reduce noise and improve acoustic performance across a wide range of airflow systems.

Automotive

  • Cabin HVAC
  • Battery cooling
  • Air intake modules

Mass Transportation

  • Aircraft ECS
  • Bus HVAC systems
  • Train HVAC systems

Consumer

  • Heat pumps
  • Central AC systems
  • Home ventilation

Industrial & Commercial

  • Data centre cooling
  • Commercial HVAC
  • Rooftop units (RTUs)

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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.