GRAS Sound & Vibration

Ear simulator kits GRAS 43AA

Ear simulator kits GRAS 43AA

Technology

The GRAS 43AA is a complete test jig for acoustical measurements on telephone handsets and earphones in accordance with:

• IEC60318-1 & -2 Electroacoustics – Simulators of human head and ear – Part 1: Ear simulator for the calibration of supraaural earphones, 1998-07
• ITU-T Recommendation P.57 (08/96) Series P: Telephone transmission Quality, Objective measuring apparatus: Artificial Ears

It consists of the following components:

• GRAS 26AC ¼" Preamplifier 
• Mounting plates for circum-aural and supra-aural headphones

The Test Jig has an adjustable spring-loaded arm to exert a variable force on the test object.