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Range of Products

We design and manufacture an extensive range of products to cover virtually all front-end equipment needed for the precise and reliable measurement and recording of acoustic signals; from the transducer to the input of an A/D converter.

These are complemented by a range of more specialised transducers and accessories for more specific applications.

New Product Catalogue

An updated product catalogue is available with numerous new products as well as our range of well-known solutions for the serious acoustics engineer.

Click on the picture if you would like a copy sent to you.

G.R.A.S. Microphone Sets

½" Low-noise Microphone System Type 40HL

Handset Positioning System Type 45EA

For testing mobile and cordles phones, the Handset Positioning System Type 45EA positions handsets onto KEMAR Manikin Type 45BM.

The positioning system features nine moving segments allowing handsets to be exactly positioned according to requirements/standards. For repeated measurements, all moving segments are provided with graduated scales to be read off. 
The handset fixture with a spring arrangement provides for easy attachment/detachment of practically any mobile/cordless handset. It is applicable for both right and left ear, and it is easy to retrofit. 

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KEMAR Manikin with Mouth Simulator Type 45BM

The KEMAR ® Manikin Type 45BM is an acoustic research tool with built-in mouth and ear simulators. The manikin simulates the changes that occur to sound waves as they pass a human head and torso, such as the diffraction and reflection caused by each ear.
The mouth simulator is a sound source that simulates the sound field at close quarters and is typically used for testing handsets (e.g. mobile phones) by aid of the Handset Positioning System Type 45EA.
The artificial ear consists of three parts:
The inner ear, the IEC 60711 Ear Simulator
The middle ear, a well-defined and standardized ear-canal extension made of steel.
The outer ear, the KEMAR Pinna; several types are available (options for both hardness and size).

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CCP Intensity Probe Type 50GI

Surface Microphone Type 40PS

Low-cost surface microphone for general purpose measurements on planar and curved surfaces. Wide useful frequency range reaching up to 20 kHz and a large dynamic range topping at around 136 dB.

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Hearing-protector Fixture Type 45CA

For testing the performance of hearing-protection devices such as ear plugs and ear muffs. Conforms with ISO 4869-3 and can be used with one 1 or two 2 microphones or ear simulators for respectively monaural or binaural tests.

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Ear and Cheek Simulator Type 43AG

For measurements on earphones of various types. It simulates the ear and cheek of a human head as well as approximating the acoustic impedance of an average human ear under certain circumstances within a given frequency band.

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New Product Catalogue

An updated product catalogue is available with numerous new products as well as our range of well-known solutions for the serious acoustics engineer.

Click on the picture if you would like a copy sent to you.