clintmartin
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Re: EQ/Equalizer Plugin for Sonar
2015/11/12 20:19:42
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Richard Cranium
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Re: EQ/Equalizer Plugin for Sonar
2015/11/13 00:14:40
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bitflipper
And I haven't had an E. Coli infection. But I still cook the sh*t outa my burgers.
You could save a lot of time simply by just not sh!ting in your burgers to start with.
post edited by Richard Cranium - 2015/11/13 00:30:25
Studio One 3 Rocks The House, Frequently Voted Best DAW 2015 !!
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AllanH
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Re: EQ/Equalizer Plugin for Sonar
2015/11/13 22:17:01
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I thought I'd demonstrate one example of how the proChannel EQ works differently than I expect. The link below shows the following: I created an Albion String instrument and routed it to a channel strip called "Strings". I then routed the output from the "String" channel strip to "Master" Screen shot 1 ("Strings") shows the spectrum in the proChannel with the EQ active, but not filtering. Screen shot 2 ("Strings") shows the the proChannel EQ active with a HP filter active. I chose 150Hz, to cut some bottom off. You can see what is cut off by it being greyed out Screen shot 3 shows the "Master" channelstrip ProChannel EQ active but not filtering. It (imo) should have match #2, but it includes the lowered frequencies supposedly removed by the HP filter in Step 2. https://goo.gl/photos/gvnbEHc5z98f3jfr6I have a more difficult-to-reproduce example , where there is audible amplification in parts of the spectrum where there shouldn't be. This may still be "driver-error", but this is not the behavior I expect. This done by choosing a steep HP filter curve. There is then on occasion amplification right above where the cutoff is supposed to be. In the case above there is amplified sound in the 150-500 Hz range (a guess). This is not the case for all HP frequencies and does not occur all the time. To me it sounds as a high-order filter over-shoot for the HP filter, but it is not reflected in the spectrum before or after the HP filter. Allan
post edited by AllanH - 2015/11/14 08:48:54
Sonar Platinum, EWHO/D, Spitfire, Miroslav, Pianoteq, ...., Kurzweil.
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AllanH
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Re: EQ/Equalizer Plugin for Sonar
2015/11/14 00:30:13
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Additionally, thank you for all the great info about other EQs. The FX is really so key to good sound.
Sonar Platinum, EWHO/D, Spitfire, Miroslav, Pianoteq, ...., Kurzweil.
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bitflipper
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Re: EQ/Equalizer Plugin for Sonar
2015/11/14 09:57:26
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Interesting observation. From the screenshots, it looks as though the EQ continues to apply a HPF after the band's been reset. I don't have ProChannel so I can't try to duplicate it, but if that's the case maybe you have found a bug. Not one that I'd classify as an "artifact", but rather a UI bug.
Are you sure the screenshots are of the exact same section, e.g. looping on a measure? Could something else account for the difference between the first and last pictures? I can get a similar visual with, say, Ozone's EQ if the display is set to infinite averaging.
 All else is in doubt, so this is the truth I cling to. My Stuff
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AllanH
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Re: EQ/Equalizer Plugin for Sonar
2015/11/14 10:07:25
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What I did to capture the screenshots was use a simple sustained cord comprised of C2 + G2 + C3 just to get spectral components in the lower spectrum. This make it easy to capture screenshots of essentially the same thing.
What bothers me more than anything is the master EQ appears to receive the original data, not the filtered output of the String EQ. Interestingly, it does appear as if the actual audio is being filtered, and so the lower frequencies in the Master EQ are not audible to me.
I think the real issue is that the EQ "illustrative" filter curve (i.e. the HP filter) is bogus. There is no way that a high-pole filter (i.e. steep) doesn't exhibit some amount over overshooting. It's simply not smooth as illustrated.
I realize I'm too much of an engineer at times, but when the visuals clearly are erroneous, it's difficult to know what I'm doing.
Sonar Platinum, EWHO/D, Spitfire, Miroslav, Pianoteq, ...., Kurzweil.
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bitflipper
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Re: EQ/Equalizer Plugin for Sonar
2015/11/14 14:00:03
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Next step: put a different spectrum analyzer after it, to see if it's an error in PC's graph. SPAN's pretty reliable for that, and you can specify larger FFT block sizes to maximize accuracy.
All else is in doubt, so this is the truth I cling to. My Stuff
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AllanH
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Re: EQ/Equalizer Plugin for Sonar
2015/11/14 17:30:05
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Thank you for the SPAN suggestion. I've tried it and here at the findings: 1) the output from the EQ'd String strip, as measured by SPAN, is about -65 db at 50 Hz with the High Pass filter set to 150 Hz. The EQ displays the signal at -18 db at 50 Hz. 2) the Master EQ shows -6db at 50 Hz (this is signal as generated by the String strip). It should ideally be -65 db or at least -18 db. Clearly erroneous. So: ProChannel EQ does not work correctly, or at a minimum the display is incorrect. I would think that the display is derived from the signal, so in conclusion ProChannel QuadCurve EQ does not work as advertised. So it wasn't the echo in the empty space between my ears after all 
Sonar Platinum, EWHO/D, Spitfire, Miroslav, Pianoteq, ...., Kurzweil.
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bapu
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Re: EQ/Equalizer Plugin for Sonar
2015/11/14 18:08:15
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AllanH
Thank you for the SPAN suggestion. I've tried it and here at the findings:
1) the output from the EQ'd String strip, as measured by SPAN, is about -65 db at 50 Hz with the High Pass filter set to 150 Hz. The EQ displays the signal at -18 db at 50 Hz.
2) the Master EQ shows -6db at 50 Hz (this is signal as generated by the String strip). It should ideally be -65 db or at least -18 db. Clearly erroneous.
So: ProChannel EQ does not work correctly, or at a minimum the display is incorrect. I would think that the display is derived from the signal, so in conclusion ProChannel QuadCurve EQ does not work as advertised.
So it wasn't the echo in the empty space between my ears after all
Fill out a problem report?
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bitflipper
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Re: EQ/Equalizer Plugin for Sonar
2015/11/14 20:53:48
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Next step is to route the identical signal to another equalizer set to exactly the same settings and compare. That will tell you whether the EQ isn't working correctly or if it's just the spectrum display that's off.
Some equalizers (but not ProChannel, AFAIK) let you specify the filter slope in decibels per octave, which makes it fairly easy to figure out what the gain reduction should be. at 50 Hz To get -65 dB at 50Hz, that would have to be quite a sharp filter, perhaps -48dB/octave (an eighth(!)-order filter). Your screenshot does not show a -48dB/octave filter, but looks more like a first-order -6dB/octave filter. Such a slope would not result in -65 dB at 50 Hz, but closer to -10 dB.
All else is in doubt, so this is the truth I cling to. My Stuff
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