miniDSP Ltd, Hong Kong /
www.minidsp.com
/ Features and specifications subject to change without prior notice
25
5.5.3
Cross-point gain and inversion
At each cross-point, the gain of each signal being mixed can be set to a value between -72 and +12 dB. To set the
gain, right-click on the cross-point and a gain control will appear. Set the gain by moving the slider, or
alternatively, type the value in directly into the entry box below,
press the Enter key
, then click the
close
button.
Each cross-point can also have the signal inverted by clicking on the
Invert
button. When the mixed signal is
inverted, the button will be displayed in green and its label will change to
“Inverted”.
The
Invert
button is useful in applications such as generating a difference signal for rear fill. If you want to try
this, experiment as follows:
1.
Create L
–
R and R
–
L signals as shown in the matrix below.
2.
Add a delay of about 20 ms to the rear channel outputs.
3.
Add high pass and low pass filters to the rear channels to limit bandwidth (experiment to see what sounds
best).
