The 45BC KEMAR head & torso with mouth simulator is an acoustic research tool with built-in ear and mouth simulators that simulates the changes that occur to soundwaves as they pass a human head and torso. Its equivalent without mouth is GRAS 45BB KEMAR Head & Torso, non-configured.

The KEMAR head and torso simulator was introduced by Knowles in 1972 and quickly became the industry standard for hearing-aid manufacturers and research audiologists (visit KEMAR.us to read the full story). The GRAS KEMAR has the same dimensions and acoustical properties as the original KEMAR from 1972 and is 100% backward compatible.

When fitted with pinna simulators, ear canal extension, and Ear Simulator, according to IEC 60318-4 or low-noise, KEMAR closely mimics the acoustic properties of the human ear. A KEMAR equipped with a mouth simulator also mimics the properties of the human mouth, and can, therefore, be used for testing of communication devices containing both microphone and loudspeaker. A 45BC KEMAR with mouth simulator has the same acoustical properties as a 45BB KEMAR without mouth simulator, except for a minor difference caused by the 45BC KEMAR's slightly open mouth.