Robot-controlled acoustic holography for hearing aid development

Introduction

resound, usa

GN ReSound, a world leader in hearing aids, commissioned a special turnkey solution featuring robot-controlled measurements coupled with Statistically Optimized Near-field Acoustic Holography

Identifying feedback due to leakage or vibration in hearing aids is a major challenge for hearing-aid designers. GN ReSound, a world leader in hearing aids and audiological instrumentation, commissioned a special turnkey solution from Brüel & Kjær. It features robot-controlled measurements coupled with Statistically Optimized Near-field Acoustic Holography (SONAH). It has stabilized development-time requirements and provided improved insights that build GN ReSound’s knowledge base.

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Challenge
Solution
Result
Client Description

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Achieving the device performance and gain needed in a new design was impossible to predict. It was particularly important to get away from traditional conformal mapping using hand-held arrays. The company needed a solution that could provide accurate, repeatable conformal mapping on the small scale they needed, and do so automatically.

A turnkey, robotic solution using our patented SONAH technology provided the accuracy and repeatability needed by GN ReSound. The solution consisted of three main parts: the robot holding the probe microphone, the robot controller and LAN-XI module, and the PC workstation.

The new system enables sound intensity measurements to a precision that were impossible to carry out previously, and high-resolution mapping of small objects. Thanks to the precision of the system, the time needed for the development process – involving modelling, simulation, and verification – has been reduced by 20%. And repeatability has improved, too.

ReSound

ReSound is among the world’s largest manufacturers of hearing aids. ReSound® helps people rediscover hearing with technologies that emulate the function of the natural ear. Their aim is to give you the opportunity to live a rich, active and fulfilling life unaffected by hearing loss.

About ReSound

Measurement Microphones Brochure - Mockup

Article: Measurement Microphones Explained

Unlock the secrets of sound measurement! Microphones are everywhere, but measurement microphones are built for precision. Dive into the physics behind them and discover how they capture sound with accuracy. Download the full article to explore more!

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