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Question about EQing
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| lowski |
I have been noticing that when I high pass or low pass something it is boosting the db level while not actually sounding louder, Why is this?. I'm not boosting the Q so I don't get it. I'm using Logic's EQ by the way..
Thanks |
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| cryophonik |
| I'm not familiar with that EQ, but does it have input and/or output levels? If so, are they set at +/-0dB? |
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| Zombie0729 |
| quote: | Originally posted by cryophonik
I'm not familiar with that EQ, but does it have input and/or output levels? If so, are they set at +/-0dB? |
some of the new EQ's have autogain as well... |
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| evo8 |
| the cutoff freq of the EQ could be in the same area as the sound you are eqing, i notice this on bass tracks sometimes |
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| Kenny Rogers |
| noticed the same in reason. adding a cutoff freq then the track suddenly was clipping. were talking about o.1dB or something though. |
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| vikernes |
| Are you talking about frequency ringing? This is normal. Avoid it by using a less steeper cut. |
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| derail |
| quote: | Originally posted by lowski
I have been noticing that when I high pass or low pass something it is boosting the db level while not actually sounding louder, Why is this? |
I've read about this before, but haven't really noticed it myself. Is it boosting the level a lot? That is, is this causing a major problem in your mixing, or is it just an academic question?
As Anthony Ross says, some EQs have autogain, to allow you to hear the effects of EQing without level changes altering your perception. |
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| lowski |
"Frequency ringing"?. That might be it. I'll try using a less steeper cut, I've been trying out -48db per octave (setting on the EQ) on the lows. The only other suspect is auto gain becuase I'm not boosting any levels.
derail. Yes it can boost the levels by a few db sometimes which is way too high!!. Also yes, it's causing problems mixing
Also Kenny Rogers; I too have noticed an increased level when using the stereo imager's high solo in Reason.
As for the Eq I was using, it was the Channel EQ in Logic |
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| music2dance2 |
| Try bringing the Q down on the curve a touch also. |
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| vikernes |
| quote: | Originally posted by lowski
"Frequency ringing"?. That might be it. I'll try using a less steeper cut, I've been trying out -48db per octave (setting on the EQ) on the lows. |
That's your problem right there. Be careful when using such high slopes on bass. 48db on bass will surely introduce a lot of ringing and change the bass sound/tone. Try a linear phase eq and see if that helps. Btw, this happens with every eq so if it sounds good just leave it or stick a limiter after it. The overall volume is the same, just some peaks are causing the rise in levels. |
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| Kenny Rogers |
yeah 4th order filter will boost a little just above the cutoff freq. 2nd order are supposed to not do this though so im shocked it does in reason as they are 12 and 6dB. closest example i could find:  |
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| lowski |
vikernes,
The boost in gain is happening on more then just the bass. I just tried sweeping the low cut freq of a hihat and it boosted it 2db !!.
I used Loigc's defualt settings.
gain/slope: -24db/oct
Q: .71
Most of the time I'm using these cuts to get rid of inaudible high and low frequencies. The goal being to bring down the overall db level a bit, but I'm getting the opposite effect. I thought this technique was commanly used to keep unwanted frequencies from building up?. Am I going about this all wrong?. |
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