Duocel® Acoustic Metal Foam Devices

What is an Acoustic Foam Microphone?

An acoustic foam microphone is engineered using advanced metal foam material, typically aluminum, designed for superior sound clarity and reduced distortion. Unlike traditional mesh or windscreen designs, this technology provides dual benefits:

  • Electrical shielding to reduce interference.
  • Wind noise suppression for cleaner outdoor recordings.

This unique construction ensures that even the most subtle audio details are preserved.

Who Uses Acoustic Metal Foam Microphones?

These high-performance microphones serve professionals across diverse fields:

  • Recording Artists & Audio Engineers
    Studio professionals choose metal foam microphones for precision, transparency, and balanced tonal quality, essential for music production and vocal recordings.
  • Field Recordists & Researchers
    Biologists, environmentalists, and sound designers rely on these devices for capturing delicate natural sounds—from bird calls to atmospheric ambiance—without interference from wind or environmental noise.
  • Broadcast & Media Professionals
    Perfect for live interviews, outdoor shoots, and film production, where clarity under variable conditions is critical.

Why Is Metal Foam Better?

Our metal foams provide unmatched acoustic performance thanks to their uniform open-cell structure. Here’s why they stand out:

  • Wind Noise Reduction: Open-cell foam minimizes turbulence that causes unwanted rumble.
  • Superior Noise Isolation: Deflects ambient and background sounds, ensuring a focused audio signal.
  • Enhanced Frequency Response: Maintains fidelity across the full spectrum of sound.
  • Durability & Lightweight Design: Ideal for demanding environments, both indoor and outdoor.

Performance Data

  • Frequency Response Curve (vs Standard Microphone Windscreen)
    • Duocel® shows flatter response across 20 Hz – 20 kHz, meaning more accurate sound reproduction.
  • Wind Noise Reduction (%)
    • Duocel® achieves 80–90% reduction, outperforming others significantly.
  • Signal-to-Noise Ratio (SNR) Performance (outdoor windy conditions)
    • Duocel® maintains higher SNR (~70–75 dB)
    • Conventional solutions drop below 60 dB.

Why ERG? 

ERG has designed, developed, and delivered microphones for a variety of industry’s, including professional studio recording.  ERG has the experience and engineering expertise to precisely adjust the Duocel® parameters to design an acoustic metal foam device that will meet your needs. We have a 50-year history of making quality Duocel® material and is certified to AS9100 Rev D. ERG is a vertically integrated company focused on customer service and turning ideas into production devices.

Aluminum

  • Lightweight
  • Cost Effective

Carbon

  • Lightweight
  • Cost Effective
  • Corrosion Resistant