Introduction
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
Read more about RA0045-S1 here
The Anthropometric Pinna
Compared to the standardized pinna, the anthropometric pinna embodies a number of improvements to the concha and ear canal, combined with increased collapsibility of the helix, and improved mounting. It is made of soft silicone, 35 Shore OO hardness.
The external shape of the pinna is identical to that of the standardized KEMAR pinna, but concha and ear canal have been modified so that they closely mimic the properties of a real human ear. The ear canal has been extended and is now an integral part of the pinna which seals directly against the ear simulator. Like the human ear, the ear canal has the 1st and 2nd bend, and the interface with the concha is oval. Fit and insertion consistency are much improved over the cylindrically or conically shaped ear canal extensions that are used with the standard pinna.
The flexibility of the outer ear has been improved, and when mounting supra-aural and circum-aural headphones the pinna now collapses against the head very much like a human ear.
In addition to the traditional push mounting from the outside, the pinna is secured with two screws from the inside of KEMAR\'s head. These two screw ensure that the pinna is held firmly in place. Therefore, it seals perfectly against the ear simulator and the head, and it is, therefore, possible to mount and dismount DUTs repeatedly without compromising the seal.
Read more about the Anthropometric Pinnae here.
Typical Applications
The anatomical shape of the pinna makes it possible to achieve a very good fit and sealing with anatomically shaped in-ear transducers.
Controlling the insertion depth is easy, leading to good insertion consistency and highly improved repeatability and accuracy of measurements.
The improved fit and seal also means that the low-frequency response is improved. It will allow you to reproduce base notes, as well as effectively measure (active & passive) attenuation.
Therefore, the 45BB-10 KEMAR is ideal for accurate and repeatable testing of headphones, earphones and in-ear hearing protectors.
Performance and warranty
KEMAR is made of components from our standard portfolio, all manufactured of high-quality material and branded parts that were chosen and processed to ensure life-long stability and robustness. This enables us to offer a two-year warranty against defective materials and workmanship.
Exceptions: Microphones included in KEMAR as for these our normal five-year warranty apply. The warranty period for cables is six months.
