Table of Contents
Advertisement
C H A P T E R
5 :
W I D E
B A N D
A U D I O
Q U A L I T Y
T E S T I N G
Excitation
The excitation diagram displays the internal representation (see Section 2.2) of a
signal.
The Bark scale is used for the horizontal axis, the vertical axis is scaled in dB
SPL. The curves are shown on a frame by frame basis, without any averaging.
As shown in Figure 5.14, the reference signal excitation, the test signal
excitation and the difference between both excitations can be selected. The
difference is calculated by subtraction in the linear domain and displayed in dB
SPL.
Click on "Next" to go to the dialog shown in Figure 5.15. Here choose
between different scalings of the X-axis. Currently available are scalings in Herz
as well as in Bark.
Figure 5.16 finally shows the resulting view of the Excitation diagram.
Figure 5.14: Select Signal Window for the excitation diagram type
97
Advertisement
Table of Contents
