TDT Medusa4Z User Manual page 54

Sound Chamber Fundamentals | 54
directly back into the subject's ear. Second, the floor is a hard reflective surface that offers little
to no damping.
Figure 7 - An example of a bad sound chamber.
Figure 7 is also incorrect because the speaker is aligned orthogonal to the wall, which also
provides a direct reflective path back to the subject's ear. In both cases, depending on the
exact distance of travel, the reflections will accumulate at the subject's ear to create
constructive or destructive interference, which will distort the stimulus and give an undesired
sound pressure level.