MOTU Audio Express User's Guide Page 57

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CUEMIX FX
57
DEVICES MENU
If you are working with more than one MOTU
audio interface product, this menu displays all
interfaces that are currently on line. Choose any
device from the menu to edit its settings using the
CueMix FX software.
Below each device are five signal analysis tools: FFT
Analysis, Oscilloscope, X-Y Plot, Phase Analysis,
and the Tuner. Choose one to open its window. For
details on these features, see the following sections.
FFT Analysis / spectrogram . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
X-Y Plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Phase Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Tuner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Figure 10-6: Opening the FFT, oscilloscope, X-Y Plot, Phase Analysis,
and Tuner windows.
Scope channels
The Scope channel selection menus (Figure 10-1 on
page 52) let you choose what input channels will be
fed to the CueMix FX audio analysis (scoping)
features described in the following sections.
Scoping the main outs
If you wish to scope audio output, send it to the
Audio Express main outs (Mix 1) and choose one
or both of the Mix1 returns from the Scope
Channel Selection menus.
Scoping host software audio output
If you want to scope audio output from your host
software, send your hosts output to the main outs
(Mix 1), enable the Mix1 Return Includes Computer
Output option (File menu), and choose one or both
of the Mix1 returns from the Scope Channel
Selection menus.
FFT ANALYSIS / SPECTROGRAM
Choose FFT Analysis from the Devices menu
(Figure 10-6) to open a new window that displays a
real-time Fast Fourier Transform (FFT) frequency
measurement curve, as shown in Figure 10-5. Each
MOTU audio interface has its own FFT/
spectrogram window.
Figure 10-5: FFT display.
View
controls
Y-axis labels for FFT display
Horizontal
controls
Vertical
controls
Spectrogram
controls
Grow
handle
Scope
channels
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