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cami19 Jun 2026 12:04
I have another question about Persistent Saturator.
The plugin allows me to adjust the saturation amount in both positive and negative directions independently from the band's gain. For example, I can boost a frequency band by +3 dB, but set the saturation amount to -10%.
What is actually happening when the saturation control is moved into negative values versus positive values?
Does a negative saturation value generate a different harmonic structure than a positive value? For example, does it favor even harmonics, odd harmonics, or some other type of harmonic behavior?
In short, how does the saturation algorithm change when moving from negative to positive values, and what should I expect to hear in terms of tone, harmonics, and perceived coloration?
The plugin allows me to adjust the saturation amount in both positive and negative directions independently from the band's gain. For example, I can boost a frequency band by +3 dB, but set the saturation amount to -10%.
What is actually happening when the saturation control is moved into negative values versus positive values?
Does a negative saturation value generate a different harmonic structure than a positive value? For example, does it favor even harmonics, odd harmonics, or some other type of harmonic behavior?
In short, how does the saturation algorithm change when moving from negative to positive values, and what should I expect to hear in terms of tone, harmonics, and perceived coloration?
CEO Youngjin.S19 Jun 2026 15:58
The Saturation control in Persistent Saturator is not simply a drive knob that only increases distortion. It works more like a bipolar harmonic blend control for each EQ band, allowing you to decide not only how much nonlinear character is generated, but also how that nonlinear component is blended back into the signal.
When the Saturation value is positive, the harmonic residue generated by the saturation stage is added back into the original band signal. This makes the selected frequency range feel denser, thicker, and more harmonically active. Depending on the source and the selected Drive Type, it can add warmth, edge, weight, presence, brightness, grit, or a stronger sense of forwardness.
When the Saturation value is negative, the plugin does not switch to a completely different saturation algorithm. Instead, it takes the nonlinear residue created by the same saturation process and blends it in the opposite direction. In other words, negative Saturation is not best understood as “a different distortion type,” but rather as an inverse harmonic blend. It can reduce or counterbalance the density, roughness, excessive coloration, or harmonic buildup that would normally be added by positive saturation.
For example, you can boost a band by +3 dB while setting Saturation to -10%. In that case, the EQ band itself is still being lifted, so that frequency range becomes more present. However, the saturation color in that band is being restrained rather than enhanced. This can be useful when you want to bring a frequency forward without making it harsher, thicker, or more distorted.
A practical example would be a vocal presence band. If you want more presence around the upper mids but positive saturation makes the vocal too sharp or grainy, a small negative Saturation value can help keep the band clear and forward while reducing excessive harmonic edge. Similarly, in the low end, negative Saturation can help maintain weight while preventing unnecessary harmonic bloom or muddiness.
It is also important to note that negative Saturation does not automatically mean “even harmonics,” and positive Saturation does not automatically mean “odd harmonics.” The even and odd harmonic balance is mainly determined by the selected Drive Type and its internal shaping behavior, such as symmetry, asymmetry, bias, clipping curve, foldback, and texture characteristics.
So, in simple terms, positive Saturation adds more harmonic color, density, and character, while negative Saturation works more like a subtractive or inverse coloration control. Positive values push the color forward negative values pull that color back or blend it in the opposite direction.
(The above answer was translated from Korean to English using Google Translate!)
When the Saturation value is positive, the harmonic residue generated by the saturation stage is added back into the original band signal. This makes the selected frequency range feel denser, thicker, and more harmonically active. Depending on the source and the selected Drive Type, it can add warmth, edge, weight, presence, brightness, grit, or a stronger sense of forwardness.
When the Saturation value is negative, the plugin does not switch to a completely different saturation algorithm. Instead, it takes the nonlinear residue created by the same saturation process and blends it in the opposite direction. In other words, negative Saturation is not best understood as “a different distortion type,” but rather as an inverse harmonic blend. It can reduce or counterbalance the density, roughness, excessive coloration, or harmonic buildup that would normally be added by positive saturation.
For example, you can boost a band by +3 dB while setting Saturation to -10%. In that case, the EQ band itself is still being lifted, so that frequency range becomes more present. However, the saturation color in that band is being restrained rather than enhanced. This can be useful when you want to bring a frequency forward without making it harsher, thicker, or more distorted.
A practical example would be a vocal presence band. If you want more presence around the upper mids but positive saturation makes the vocal too sharp or grainy, a small negative Saturation value can help keep the band clear and forward while reducing excessive harmonic edge. Similarly, in the low end, negative Saturation can help maintain weight while preventing unnecessary harmonic bloom or muddiness.
It is also important to note that negative Saturation does not automatically mean “even harmonics,” and positive Saturation does not automatically mean “odd harmonics.” The even and odd harmonic balance is mainly determined by the selected Drive Type and its internal shaping behavior, such as symmetry, asymmetry, bias, clipping curve, foldback, and texture characteristics.
So, in simple terms, positive Saturation adds more harmonic color, density, and character, while negative Saturation works more like a subtractive or inverse coloration control. Positive values push the color forward negative values pull that color back or blend it in the opposite direction.
(The above answer was translated from Korean to English using Google Translate!)
CEO Youngjin.S20 Jun 2026 12:28
Yes, it can be understood that way to some extent. However, technically speaking, the negative saturation range in Persistent Saturator is not a traditional resonance suppressor or dynamic resonance remover.
A typical resonance suppression tool usually detects or targets specific resonant peaks and reduces their energy directly, often in a way similar to a dynamic EQ or resonance remover. Persistent Saturator’s negative saturation works differently. It does not automatically detect and remove resonant frequencies. Instead, it blends the nonlinear harmonic residue generated around the selected band in the opposite direction.
Because of this, negative saturation can feel like it is reducing harmonic density, roughness, excessive coloration, or harmonic buildup around a specific frequency area. If a band already sounds sharp, nasal, boxy, muddy, or overly resonant, applying a small amount of negative saturation can help make that area feel more controlled while still keeping the frequency range present in the mix.
That said, it would not be completely accurate to describe it as pure resonance suppression. It is not directly removing every resonant component from the original signal, and it is not analyzing the signal to automatically suppress resonant peaks. A more accurate description would be inverse harmonic blend, subtractive coloration, or harmonic density control.
For example, if a vocal feels too aggressive or grainy around the 2–5 kHz range, you can select that area and apply a small amount of negative saturation. The result may feel similar to softening a resonance, but what is actually happening is that the saturation residue and harmonic coloration around that band are being blended in the opposite direction, rather than simply cutting the frequency with EQ.
So, negative saturation can be used in a resonance-control-like way in certain situations, but technically it is better described as band-based inverse harmonic density control. If you need to remove a very specific resonance, using Band Gain cut and Q adjustment will still be the more direct approach. Negative saturation can then be used alongside that to refine not only the level of the resonance, but also its texture, density, and perceived coloration.
A typical resonance suppression tool usually detects or targets specific resonant peaks and reduces their energy directly, often in a way similar to a dynamic EQ or resonance remover. Persistent Saturator’s negative saturation works differently. It does not automatically detect and remove resonant frequencies. Instead, it blends the nonlinear harmonic residue generated around the selected band in the opposite direction.
Because of this, negative saturation can feel like it is reducing harmonic density, roughness, excessive coloration, or harmonic buildup around a specific frequency area. If a band already sounds sharp, nasal, boxy, muddy, or overly resonant, applying a small amount of negative saturation can help make that area feel more controlled while still keeping the frequency range present in the mix.
That said, it would not be completely accurate to describe it as pure resonance suppression. It is not directly removing every resonant component from the original signal, and it is not analyzing the signal to automatically suppress resonant peaks. A more accurate description would be inverse harmonic blend, subtractive coloration, or harmonic density control.
For example, if a vocal feels too aggressive or grainy around the 2–5 kHz range, you can select that area and apply a small amount of negative saturation. The result may feel similar to softening a resonance, but what is actually happening is that the saturation residue and harmonic coloration around that band are being blended in the opposite direction, rather than simply cutting the frequency with EQ.
So, negative saturation can be used in a resonance-control-like way in certain situations, but technically it is better described as band-based inverse harmonic density control. If you need to remove a very specific resonance, using Band Gain cut and Q adjustment will still be the more direct approach. Negative saturation can then be used alongside that to refine not only the level of the resonance, but also its texture, density, and perceived coloration.
NoobRolah3 Jul 2026 22:34
Hi, I work in Luna and I've been having problems with the Persistent Saturator. Basically, when I load it, it crashes Luna and I just can't use it. It only happens with the Saturator and only in Luna, since the other VSTs in the Persist series work fine. I've tried it in Ableton and Reaper and I can use it without any issues. I don't know if it's a DAW-specific problem, though I doubt it since it loads the others without any problems. This is on Windows.
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