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Elevating Audio Performance: Advanced Acoustic Design

At Seltech, acoustic innovation is at the core of what we do. Our team of specialists works alongside you to transform audio requirements into high-performing, reliable designs. Whether your project involves loudspeakers, microphone modules, or custom in-ear systems, we provide end-to-end engineering support to help you reach the sound quality you aim for.

Explore Our Acoustic Design Capabilities

Our acoustic laboratories, located in Paris (France) and Nanjing (China), are equipped to perform precise characterization at both component and system levels. We operate large anechoic chambers for full-device measurements, as well as dedicated tools for bare transducer evaluation — such as standardized baffles, ear simulators, and broadband sources used for module testing.

To accurately predict performance, our engineering team relies on a combination of Lumped Element simulations and hybrid acoustic models that merge LE and Boundary Element techniques.

These methods allow us to refine frequency responses, optimize acoustic loads, and validate design choices early in the development cycle.

For more advanced scenarios, we also model transducers in COMSOL Multiphysics, enabling detailed analysis of mechanical behavior and sound radiation when physical iterations are not yet possible.

Our team designs loudspeaker modules that meet both acoustic and mechanical objectives.

By shaping the internal volumes and using techniques like Bass-Reflex or Passive Radiator architectures, we can adjust bandwidth and increase low-frequency output.

When required, we complement the acoustic design with digital processing to extend low-end performance or mitigate unwanted resonances and distortion.

We also develop microphone modules optimized for clean sound capture and spatial filtering. Our work includes the tuning of acoustic channels and the design of multiple beamforming configurations, such as:

  • Linear broadside setups
  • Differential end-fire geometries
  • Circular arrays
  • Two-dimensional planar structures

These configurations are engineered to maintain stable directivity and high intelligibility in various acoustic environments.

For in-ear and over-ear modules, we combine electrical and acoustic modeling to create complete, predictable systems.

This approach allows us to integrate the transducer, enclosure, venting, and damping strategy into a single coherent design, ensuring the final audio signature meets the required performance.

What Our Offer Includes

Our full design service covers every step required to bring an audio concept from idea to validated prototype:

  • Definition of acoustic targets
  • Selection of transducers and supporting components
  • Simulation-based analysis and recommendations
  • Development of module architectures
  • Prototype testing and qualification with detailed reports
  • Proof-of-concept builds for early evaluation

This integrated workflow ensures that your product benefits from a robust and predictable audio design process.

 

Let’s Build Your Next Acoustic Innovation

If you are developing a new audio product or want to enhance an existing design, our teams are here to support you every step of the way.

Contact us to start your next acoustic journey with Seltech.

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