Maico MA 33 Operation Manual page 45

Operation Manual MA 33
Figure 51
Utilization of BPTA mode (Figure 52):
Figure 52
Click on the white area and choose red circle (meaning right), cross (meaning left) or
circle with cross (for both).
The average results of the sum of the whole selection.
5.5.2.8 Bone Conduction Threshold (MA 33 BC, Speech)
Bone conduction, which involves the transmission of sound waves through the skull
directly to the inner ear, provides information regarding the function of the inner ear. For
a neural hearing loss, the values of air conduction and bone conduction are the same. In
this case, a hearing loss of the middle ear can be eliminated.
Place the bone conduction transducer so that the flat, circular side of the transducer is
positioned on the mastoid, on the noticeable ledge of the cranial bone behind the auricle.
The other side of the headband is placed in front of the opposite ear.
8100092 Rev. 9 43 19/08/2019