Procedura assistita del guadagno
| Site: | QSC |
| Course: | TouchMix Training (Italiano) |
| Book: | Procedura assistita del guadagno |
| Printed by: | Guest user |
| Date: | Thursday, 21 November 2024, 5:05 AM |
Description
Trascrizione Video
0:07
Welcome back to the next installment of the TouchMix Training Series.
0:10
In this installment, we’ll be going over one of the more unique functions of the mixer, the Gain Wizard.
0:16
To access this function you just press the Wizard button on the mixer and Gain Wizard on the touchscreen.
0:22
But you might be asking, “Well what does it do?" Well during setup and sound check,
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one of the first things to do is gain stage each input for optimum signal-to-noise ratio.
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To do that, you would typically an instrument or a microphone to a channel input
0:38
and increase or decrease the analog gain trim to maximize that input’s signal, without clipping.
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This adjustment is done on the preamp, before it makes it to the digital domain of the mixer.
0:50
But in reality, the levels of the sound check might not be the same as the live performance.
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No matter how well-tuned the sound check goes, the excitement of the performance
0:59
might lead the musicians to push their levels further than expected.
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If that happens, the signal is going to clip – causing distortion and other nasty sounds.
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The mixer can’t automatically dial this down because the clipping is taking place
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in analog before the mixer receives it.
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If you’re engineering a live mix then you’ll see the clipping and you can dial it back down again.
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However, many TouchMix users are the performers themselves,
1:24
and won’t be paying attention to the clip indicator during the set
1:27
because they’ve got more important things to do:
1:29
like entertaining the audience. Well that’s when you call on the Gain Wizard.
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On your home fader screen, you’ll see your channel’s faders as well as the mini-faders at the top of the screen.
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A channel’s meter will turn red momentarily when its channel is clipping,
1:43
but the mini-fader that represents that channel will stay red.
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But that doesn’t tell you how much clipping there is or what to do about it.
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What the Gain Wizard does is keep track of your channel inputs and tells you how severe the clipping is.
1:55
When you select the Gain Wizard you’ll see a representation of all of the input gain trim knobs,
2:01
any clipped input channels, and a meter indicating how many tick marks it recommends you turn one down.
2:08
Then all you have to do is adjust that trim knob manually to keep your channel from clipping
2:13
or suffering from distortion again during your set.
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Tap the reset button to clear the indicators and you’re good to go.
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If, during your performance, you ever see a red clip light on one of the main fader banks,
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it’s a good idea to jump into the Gain Wizard to see how much you should trim back that input
2:28
to get it back under control. And just so you know,
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if you ever want to clear those clip indicators from the mini-fader bank without going to the Gain Wizard,
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simply go to your menu screen and tap Clear Clip. And that’s about it. No guessing required.
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The Gain Wizard is just one more way that the TouchMix ensures you’ve got the perfect mix for your live event.
2:49
In the next installment, we’ll take a look at the Aux and Monitor settings.
2:52
So we’ll see you then.
3:01
You shall not pass audio. He’s a Wizard. Yeah, we got that.
Descrizione della lezione
Ulteriori informazioni su come utilizzare la procedura guidata del guadagno per monitorare automaticamente gli ingressi di canale per evitare clipping e consigliare l'utente su come regolare correttamente le impostazioni del preamplificatore.