Test Fixtures

KEMAR Mannequin

The KEMAR Mannequin from GRAS Sound and Vibration is an acoustic test fixture that provides the Head Related Transfer Function (HRTF) by simulating the physical characteristics of the human auditory system, head and torso. The KEMAR Mannequin is used to auditory research application and binaural recording/sound quality applications. When fitted with IEC 711 couplers, the […]

G.R.A.S. 45CB Test Fixture

G.R.A.S. provides a full line of test fixtures to support acoustic measurement, recording and auditory measurement applications.

G.R.A.S. 43AA Ear Simulator Kits

The ear simulator is designed to resonate in the same way that the human ear does, which gives accurate results without the need for more expensive and bulky mannequins when performing audiometer calibration or production line testing of headphones or headsets.

G.R.A.S. Sound and Vibration Model 45CA Hearing Protector Test Fixture

The G.R.A.S. Hearing-Protector Test Fixture Type 45CA is for testing the performance of hearing-protection devices such as ear plugs and ear muffs (supra-aural as well as circumaural). It conforms with ISO 4869-3 and can be used with one1 or two2: WS1P or WS2P microphones respectively 1-inch or ½-inch (with adapter, e.g. RA0017) IEC 60318 Ear […]

Sound Power Microphone Array Fixtures

The Sound Power Hemisphere array fixture from GRAS Sound and Vibration provides and easy and repeatable method for positioning and holding an array of microphones for sound power level determination. GRAS Hemisphere Brochure_21-1

Normal Incidence Sound Absorption and Sound Transmission (Kundt) Tube

Kundt Tube for Measurement of Normal Incidence Sound Absorption and Sound Transmission Acoustic Impendence Tube These machined aluminum Kundt tubes from SCS-Vibroacoustics in Italy are by far the highest quality tubes for measurement of acoustic impedance, normal incidence sound absorption and sound transmission that we have seen.  The modular section design allows it to be […]

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