MOTU UltraLite-mk4, User Manual

Page: 64 / 94

M O T U A U D I O T O O L S
64
Logarithmic or Linear X-Axis Scale
The x-axis defaults to a logarithmic scale, but it can
be changed to a linear scale if desired. In the View
controls (Figure 9-6), click
Logarithmic to access
the x-axis scale options menu. With a linear scale
selected, frequency is constant, but the width of
each octave along the x-axis is different. With a
logarithmic scale selected, octaves are displayed
with a constant width, but frequency is displayed
logarithmically within each octave.
Axes display
The
Axes
control (Figure 9-6) sets the opacity of
the grid displayed in the graph, from 100% (fully
visible) down to 0% (fully hidden).
Pausing the display
The Pause button in the upper right corner of the
View section (Figure 9-6) allows you to freeze the
display at any time. To resume, click the button
again.
Horizontal controls (frequency axis)
The Horizontal controls (Figure 9-7) configure the
value range of the x-axis (frequency). Click and
drag the values up or down to set them, or double-
click to return to the default value.
Figure 9-7: The Horizontal controls.
There are two modes for the controls: Zoom/Offset
and
Min/Max
. To change the mode, use the
Horizontal control menu (Figure 9-7).
In Zoom/Offset mode, Zoom sets the display zoom
from 1x to 100x, where the number represents the
zoom factor relative to the entire frequency range.
For example, when the horizontal zoom value is 1x,
the entire frequency range from 10 to 24000 Hertz
is displayed; when the horizontal zoom value is 2x,
one half of the entire frequency range is displayed.
Pos determines which frequency is displayed at the
center of the graph.
In
Min/Max
mode,
Min
and
Max
set the lowest and
highest displayed frequencies (in Hertz).
Vertical controls (amplitude axis)
The Vertical controls (Figure 9-8) operate similarly
to the Horizontal controls, except that they
configure the y-axis (amplitude).
Figure 9-8: The Vertical controls.
In
Zoom/Offset
mode,
Zoom
sets the display zoom
from 1x to 100x, and
Pos
sets the center amplitude
of the graph. In Min/Max mode, Min and Max set
the smallest and largest displayed amplitude.
Spectrogram controls
The Floor control (Figure 9-9) sets the amplitude
threshold for the spectrogram display, from -144
dB up to 0 dB.
Figure 9-9: The Spectrogram controls.
The
Alpha
control (Figure 9-9) sets the opacity of
the spectrogram information displayed in the
graph, from 100% (fully visible) to 0% (hidden).
Horizontal controls menu
Vertical controls menu