MOTU Audio Express Guide de l'utilisateur télécharger pdf (Page 65)

CUEMIX FX

X-Y PLOT

The X-Y Plot window (Figure 9-17) graphs the

amplitude of a stereo audio signal on a two-

dimensional grid.

For each unit of time (i.e. each sample), the

amplitude of the left channel is displayed on the x-

axis and the amplitude of the right channel is

displayed on the y-axis. A thick white vertical line

marks where left channel amplitude equals zero; a

thick white horizontal line marks where right

channel amplitude equals zero (Figure 9-17,

below). There are also thick white diagonal lines

for y = x and y = -x.

Metering

Level meters are displayed above and to the right of

the graph for the left (green) and right (red)

channels, respectively. An additional Correlation

meter (blue) is displayed on the right. This meter

displays the correlation between the two channels.

The higher the meter, the higher the correlation

between the two channels. Below are a few

examples:

Opening the X-Y Plot

Each MOTU audio interface has its own X-Y Plot

window. Choose the X-Y Plot item from the

Devices menu under the desired interface

(Figure 9-6 on page 57).

Figure 9-17: X-Y Plot

Situation Meter

level

X-Y Plot graph Mathematical

relationship

Perfect

correlation

+1 Diagonal line going

from lower left to

upper right:

y = x

Zero

correlation

0 No discernible pat-

tern

None

Perfectly out

of phase

-1 Diagonal line going

from upper left to

lower right:

y = -x

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 81 82

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MOTU Audio Express Guide de l'utilisateur Page 65

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