PreSonus UC Surface handleiding
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4 Graphic EQ
4.2 Using the Smaart Spectrograph to Ring Out Monitors
UC Surface
Reference Manual
4.1.2 RTA
Clicking on the RTA button (from the Fat Channel EQ or GEQ tab) will
launch a real-time analyzer in which x = frequency and y = amplitude.
An RTA provides a close visual representation of what you are hearing. It
provides a view of the long-term spectrum of the signal, such as the one-
third-octave spectrum long-term average of a musical performance.
4.2 Using the Smaart Spectrograph to Ring Out Monitors
The spectrograph shows frequency data over time, so a constant frequency,
such as feedback, results in a straight line in the spectrograph. In a feedback
loop, a portion of the signal from the speaker returns to the microphone,
resulting in a buildup of energy that creates squealing, screeching feedback.
“Ringing out” is a process of attenuating the frequencies that are feeding
back to maximize gain before feedback in your oor monitors.
1. With the mic input gain at an appropriate level, bring the aux-
send level up on the mic channel you wish to ring out.
Power User Tip: If you are using one console for stage monitors and another console
for front-of-house, set the mic input gain on the front-of-house console. Do not “gain
up” the mic signal on the monitor mixer for the sake of getting more volume out of a
stage monitor, as you can do that in other places (Mix level for individual channels,
Aux Out level for global control, etc.). Gain staging is very important in order to have
a feedback-free show.
2. Select the graphic EQ for the aux output of the stage monitor you are ringing out
3. Enable the spectrograph.
4. Slowly bring the aux output level up until you hear (and see) feedback.
Note: Ringing out stage monitors will produce feedback. If you are not careful, you
can produce a lot of feedback. Do not make sudden gain boosts; go slowly and
carefully to avoid causing any damage to speakers and ears.
5. Feedback will show up as a solid line on the spectrograph and as
a line peak on the RTA. Use the dynamic threshold to adjust how
bright, and at what input level, the frequency information plots.
6. Lower the GEQ fader for the oending frequency in 3 dB
increments to attenuate it out of your stage monitor.
Power User Tip: Bring back the level on the GEQ slider to the point just before
feedback so you don’t take out too much frequency content and sacrice overall
timbre. Because the speaker is pointed at the mic, stage-monitor feedback typically
occurs in the higher frequencies, which also is where intelligibility comes from.
Maximizing your intelligibility and gain structure results in clearer-sounding
monitors.
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Productinformatie
| Merk | PreSonus |
| Model | UC Surface |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 14432 MB |
