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Microphone Solutions

From 3D design reviews up to fully tailored solutions, SELTECH is here to support you and allow you to always be innovative and competitive in the audio and electronics market.

Sound Channel
Design

The correct integration of a microphone is a key point for good sound capture in your product. However, we know that as soon as a microphone is “loaded” with an acoustic path, its frequency response (and more particularly its resonance peak) changes, thus being able to alter the audio band of the signal considered (example of speech key frequencies given below).

Relying on Lumped Element (LEM) models, the response of a full microphone system can be properly predicted and adjusted to the application bandwidth.

Beamforming
solutions

Microphone beamforming is now widely used across various industries to enhance audio capture by directing sensitivity towards desired sound sources. Seltech excels in designing and predicting the directivity patterns of linear broadside arrays, differential end-fire arrays, differential circular arrays, and two-dimensional planar arrays, ensuring optimal performance and precision in complex acoustic environments.

linear broadside array

Differential circular array

Differential end-fire array

2D Planar Array

linear broadside array

Differential circular array

Differential end-fire array

2D Planar Array

Testing
capabilities

Based on popular techniques involving a reference microphone next to the module under test, Seltech can evaluate the behavior of a bare microphone module as well as the recording function of a complete device. Dedicated ultrasonic sources allow to quantify your system out of the audible bandwidth, when the application requires it.

Do you need an acoustic study for your product ?

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