ETMC Technologies :: G.R.A.S. Sound & Vibration :: Type Type 43AA - Artificial Ear: complete test jig for acoustical measurements on telephone handsets and earphones. It includes an IEC 318 Ear Simulator RA0039 which is individually calibrated according to the ITU-T Recommendation P.57 (08/96) "Series P: Telephone transmission quality, objective measuring apparatus: artificial ears".

<H1>No Frames? No Problem!</H1> <p><br>Go to G.R.A.S. Sound & Vibration web site with <A HREF="http://www.gras.dk/00012/00058/00159/00160/">no-frames</A>.</p> <p>The Artificial Ear Type 43AA is a complete test jig for acoustical measurements on telephone handsets and earphones. It includes an IEC 318 Ear Simulator RA0039 which is individually calibrated according to the ITU-T Recommendation P.57 (08/96) ”Series P: Telephone transmission quality, objective measuring apparatus: artificial ears”. <p>The Type 43AA comprises: <p> * IEC 318 Ear Simulator RA0039 <p> * ½" Pressure Microphone Type 40AG <p> * ¼" Preamplifier Type 26AC <p> * Test Jig RA0052 <p> * Mounting plates for circum-aural and supra-aural headphones <p>The Test Jig has an adjustable spring-loaded arm to exert a variable force on the test object.