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If you have a question, feel free to contact us:

GRAS Sound & Vibration 

Headquarter | gras@grasacoustics.com
UK       | sales-uk@grasacoustics.com
USA    | sales-usa@grasacoustics.com
China | cnsales@grasacoustics.com


GRAS worldwide

R&D and QA

Low-Noise Testing

Low-noise testing down to the threshold of human hearing

For standard testing, click here. For high-frequency testing, click here. For hi-res testing, click here.

Reference Level Acoustic Test Fixtures    |     Ear Simulator Kits

Reference Level Acoustic Test Fixtures

KEMAR head and torso simulators are multi-configurable and ideal for testing in laboratories and R&D where accuracy and precision in realistic simulation of head and torso-related diffraction are required. They can be used to generate 3-D simulation models of HRTF.

KEMAR
2-Channel Head and Torso Simulator

ANC Performance test

Intended for test that do not require mouth simulator

Headphone       Earphone        In Ear Blue

Low-Noise Testing/ANC (10.5 dB(A)

45BB-11 Low-noise ear simulator system and anthropometric pinnae, 1-Ch

45BB-12 Low-noise ear simulator systems and anthropometric pinnae, 2-Ch
45BC KEMAR with Mouth Simulator
2-Channel Head and Torso Simulator with Mouth Simulator

With mouth simulator for testing of headsets

Intended for test that do require mouth simulator

Headphone       Earphone       Headset        In Ear Blue

Low-Noise Testing/ANC (10.5 dB(A)

45BC-11 Low-noise ear simulator system and anthropometric pinnae, 1-Ch

45BC-12 Low-noise ear simulator systems and anthropometric pinnae, 2-Ch

Ear Simulator Kits

Table-top test fixtures are easy to use and ideal for testing on the production line when fast and repeatable mounting is an important parameter.

43AG Ear and Cheek Simulator
1-channel Table-top Test Fixture

Can measure circumaural, supra-aural and in-ear headphones

Headphone       Earphone        In Ear Blue

Low-Noise Testing/ANC (10.5 dB(A))

43AG-5 Low-noise ear simulator system and anthropometric pinnae