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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

High-Frequency Testing

Testing up to 20 kHz for ear simulator and microphone-based systems

For standard testing, click here. For low-noise testing, click here. For hi-res testing, click here.

Reference Level Acoustic Test Fixtures    |   Universal 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

High-Frequency Testing (20 kHz)

45BB-13 High-Frequency ear simulators and anthropometric pinnae, 2-Ch LEMO

45BB-14 High-Frequency ear simulators and anthropometric pinnae, 2-Ch CCP
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

High-Frequency Testing (20 kHz)

45BC-13 High-Frequency ear simulators and anthropometric pinnae, 2-Ch LEMO

45BC-14 High-Frequency ear simulators and anthropometric pinnae, 2-Ch CCP

Universal Acoustic Test Fixtures

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.

45CA Headphone/Hearing Protector Test Fixture
2-channel Test Fixture

Very high Self-Insertion Loss (<65 dB)

Modifiable with various ear simulators and pinnae

Perfect for ANC performance test due to the high SIL

Headphone       Earphone        In Ear Blue

High-Frequency Testing (20 kHz)

45CA-9 High-Frequency ear simulators and anthropometric pinnae, 2-Ch LEMO

45CA-10 High-Frequency ear simulators and anthropometric pinnae, 2-Ch CCP
45CC Headphone Test Fixture
Modular 2-channel Test Fixture

ANC performance test (low-level ANC)

Adjustable to suit any headphone test setup

Precise setup reproduction for use between R&D, PL and QA/QC

Headphone        Headset blue

High-Frequency Testing with IEC 61094 1/2” WS2P Microphones

45CC-1 1/2” microphones, 2-Ch. LEMO

45CC-2 1/2” microphones, 2-Ch. CCP


Headphone        Headset blue

High-Frequency Testing with IEC 61094 1/4” WS3P Microphones

45CC-9 1/4” microphones, 2-Ch. LEMO

45CC-10 1/4” microphones, 2-Ch. CCP


Headphone       Headset        EarPods blue        In Ear Blue

High-Frequency Testing with IEC 60318-4 with Pinnae

45CC-16 1/2” microphones with pinnae, 2-Ch. LEMO

45CC-17 1/2” microphones with pinnae, 2-Ch. CCP

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        EarPods blue        In Ear Blue

High-Frequency Testing (20 kHz)

43AG-6 High-Frequency ear simulator and anthropometric pinnae, LEMO

43AG-7 High-Frequency ear simulator and anthropometric pinnae, CCP
43AC Ear Simulator Kit
1-channel Table-top Test Fixture

For measurements on hearing aids

Earphone       In Ear Blue

High-Frequency (20 kHz)

43AC-S4 High-Frequency ear simulator, LEMO

43AC-S5 High-Frequency ear simulator, CCP