HMS II.4 (Code 1240) - Artificial Head
Measurement System with Ear Simulator
In contrast to HMS
II.3, the Artificial Head Measurement System HMS II.4
is only equipped with an ear simulator but not with an
artificial mouth, thus only allowing measurements of communication
devices and networks in receiving direction.
The simulation of the head
geometry has been reduced to the acoustically relevant
structures of the human anatomy and results in a recording
technology which corresponds to the acoustical behavior
of human test persons under realistic conditions.
II.4 meets the requirements of ITU-T Recommendation P.58
in receiving direction.
HEAD acoustics GmbH