ETMC Technologies :: G.R.A.S. Sound & Vibration :: RA0039 - Ear Simulator: an "IEC 60318-1:1998 Electroacoustics" ear simulator with an input impedance closely resembling that of an average human ear. When the RA0039 is coupled to a sound source, the impedance will load the sound source similar to the loading caused by the human ear. The RA0039 is measured and calibrated according to the ITU-T Recommendation P.57 (08/96) ”Series P: Telephone transmission quality, Objective measuring apparatus: Artificial ears”. The RA0039 is also part of the G.R.A.S. Artificial Ears Type 43AA and Type 43AD.

<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/00012/00058/00166/00172/">no-frames</A>.</p> <p>The IEC 318 Ear Simulator Type RA0039 is an ear simulator with an input impedance closely resembling that of an average human ear. When the RA0039 is coupled to a sound source, the impedance will load the sound source similar to the loading caused by the human ear. <p>The RA0039 meets the requirements of IEC 60318-1:1998 Electroacoustics - "Simulators of human head and ear - Part 1: Ear simulator for the calibration of supra-aural earphones". <p>The RA0039 is measured and calibrated according to the ITU-T Recommendation P.57 (08/96) ”Series P: Telephone transmission quality, Objective measuring apparatus: Artificial ears”. <p>The RA0039 is also part of the G.R.A.S. Artificial Ears Type 43AA and Type 43AD. <p>Specifications Type RA0039 <p>Standards: IEC 60318 (prev. IEC 318) and ITU-T Recommendations P.57 (08/96) <p>Frequency range: 100 Hz - 4 kHz <p>Dimensions: Height:19.8 mm <p>Diameter: 60 mm <p>Weight: 137 g