Cody Casey
Equalization (EQ) is a commonly used audio process in music and video post-production that uses filters at various frequency bands to shape the sound of an audio file, instrument, or vocal performance. Logic Pro, a digital audio workstation (DAW), offers a range of EQ options, including Single Band EQs, Multiband EQs, and Channel EQ. Channel EQ, in particular, is a versatile multiband EQ with eight colour-coded frequency bands that allow for precise sound shaping. It is a powerful tool for enhancing vocals and shaping the overall sound of a project mix. This paragraph introduces the topic of how to pan EQ in Logic, exploring the various EQ options available and highlighting the versatility of Channel EQ in Logic Pro for audio production.
| Characteristics | Values |
|---|---|
| Equalisation (EQ) | One of the most-used audio processes |
| EQ | Specialized filters that control the frequencies of the sound they're applied to |
| Single Band EQ | Simplest type of EQ that allows changes to one frequency band within the spectrum |
| Types of Single Band EQ | Low cut and high cut, lowpass and highpass, shelving and parametric EQs |
| Multiband EQ | Combines several filters in one unit, controlling a large part of the frequency spectrum |
| Channel EQ | A versatile multiband EQ, with 8 colour-coded frequency bands |
| Bands | 1 & 2: High Pass and Low Shelving filters |
| 7 & 8: High Shelving & Low Pass Filters | |
| Remaining bands: Parametric filters | |
| Controls | Frequency, Gain and Q Value for each band |
| Linear Phase EQ | Can be inserted in the first Audio Effect slot |
| Vintage Tube EQ | A free plugin in Logic Pro |
| Logic Pro's Channel EQ | A parametric equalizer, allowing adjustment of specific frequency bands |
| Logic Pro X | Includes sound effects, plugins, and Channel EQ |
| Channel EQ | Provides eight colour-coded frequency bands, including lowpass and highpass filters, low and high shelving filters, and four flexible parametric bands |
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Logic Pro's Channel EQ
The Channel EQ is typically used as the first effect on a channel strip, allowing for sound shaping before applying other effects. It is an excellent tool for beginners as it has a spectrum analyser, providing a real-time view of all the frequencies of a track. The graphic controls make it easy to view and adjust the audio signal. The frequency, gain and Q value for each band can be adjusted by dragging the lines and control points in the graphic display.
To add the Channel EQ to a project, click the EQ overview on a channel strip, or choose Equalizers > Channel EQ in the channel strip Audio Effect plug-in menu. The Channel EQ can also be added by clicking the EQ thumbnail window on a track, which opens the Channel EQ by default.
The Channel EQ is a powerful tool, but it should be used conservatively. Drastic boosts or cuts to a signal may indicate an issue during the recording process. It is important to remember that there is no "right way" to EQ a track. Every genre is different, and the most important factor is that the music sounds good to the producer and their listeners.
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Single Band EQs
Single-Band EQs are the simplest type of EQs, allowing you to apply changes to one frequency band within the spectrum. This EQ type is suitable when you want to adjust a specific frequency band, and it can be useful for creating interesting filter sweep effects with the High or Low Cut filters.
The Single-Band EQ in Logic Pro has different modes, each with its own set of basic controls. The Low Cut EQ attenuates the frequency range below the selected frequency, effectively removing the bass. The Low Shelf EQ, on the other hand, only affects the frequency range below the selected frequency, similar to Low Cut but with a more horizontal cut-off. The Parametric EQ is a simple filter with a variable centre frequency, allowing you to boost or cut any frequency band in the audio spectrum. It can be used as a notch filter with a very restricted frequency range to target specific frequencies.
Additionally, the High Shelf EQ only impacts the frequency range above the selected frequency, making it a useful tool for targeting specific high-frequency bands. Conversely, the High Cut EQ attenuates the frequency range above the selected frequency, similar to the Low Cut but for higher frequencies. The Slope knob lets you choose the amount of cut in decibels per octave, with higher values resulting in a more noticeable effect.
The Q Factor knob in the Single-Band EQ allows you to set the width of the frequency band around the cutoff frequency. This gives you precise control over the affected frequencies. With Single-Band EQs, you have the flexibility to adjust the width of the band, the number of frequencies involved, and the gain and Q values to suit your desired outcome.
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Multiband EQs
Channel EQ is a versatile multiband EQ, with 8 colour-coded frequency bands. These include high-pass, low-pass filters, as well as low and high shelving and four flexible parametric bands. Bands 1 and 2 are the High Pass and Low Shelving filters, respectively, while Bands 7 and 8 are your High Shelving and Low Pass Filters. The other bands are parametric filters.
Along the bottom, you have the specific controls for each band, here you'll find the Frequency, Gain and Q Value for each band. Note that these can also be adjusted by dragging the lines and control points in the Graphic Display. The Analyzer button toggles the Analyzer on or off, and the Q-Couple button turns on Gain-Q coupling to automatically adjust the Q when you change the gain on any EQ band.
Channel EQ can be used to shape the sound of individual tracks or audio files or for tone-shaping on an overall project mix. The Analyzer and graphic controls make it easy to view and change the audio signal in real time.
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EQ plug-ins
Equalization (EQ) is one of the most commonly used audio processes in music and post-production video work. It involves using filters at various frequency bands to shape the sound of an audio file, instrument, or vocal performance. EQ plug-ins are specialised filters that control the frequencies of the sound they are applied to. They allow certain frequencies to pass through unchanged, while others can be raised or lowered.
There are several types of EQ plug-ins available in Logic Pro, including Single Band EQs and Multiband EQs. Single Band EQs are the simplest type, allowing you to apply changes to one frequency band within the spectrum. Types of Single Band EQ include low cut and high cut, lowpass and highpass, shelving, and parametric EQs. Multiband EQs, on the other hand, combine several filters in one unit, allowing you to control a large part of the frequency spectrum. Logic Pro's Channel EQ is an example of a Multiband EQ, with 8 colour-coded frequency bands, including highpass, lowpass, low and high shelving, and four parametric bands.
In addition to the Channel EQ, Logic Pro also offers a Vintage Tube EQ plug-in, which emulates older hardware units known for their distinctive "sonic colouration". The Vintage Tube EQ is modelled after the Pultec EQ, which is known for its warm colour. Logic Pro also includes a Linear Phase EQ, which has identical parameters to the Channel EQ, allowing settings to be freely copied between them.
When using EQ plug-ins, it's important to remember that there is no "right way" to EQ your tracks. Every genre has its own unique sound, and you should trust your ears to determine what sounds best. However, some general tips for using EQ include cutting frequencies that are masking a track or making it unclear, boosting frequencies to make a track stand out, and adjusting the gain after boosting a frequency to maintain the balance of your mix.
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Vintage EQ
Logic Pro includes three Vintage EQ plug-ins based on classic EQ modules from the 1950s, 1960s, and 1970s. The three plug-ins are the Vintage Tube EQ, Vintage Graphic EQ, and Vintage Console EQ, which feature the distinct tonal characteristics of the original units.
The Vintage EQ plug-ins impart a "sonic colour" on signals, unlike modern equalizers, which are precise and clean. Each vintage EQ unit has a distinct tonal signature, and they all share a set of common Output parameters, along with unique parameters. The Drive knob, for instance, sets the amount of gain/saturation of the chosen vintage EQ output stage, and the Output Model pop-up menu allows you to choose a vintage EQ model output stage.
The Vintage Tube EQ, for example, is modelled after the Pultec EQ, which is known for its warm colour. The Vintage Console EQ, on the other hand, emulates the EQ section of a well-known mixing console channel, and the Vintage Graphic EQ emulates a classic mixing console graphic EQ module.
The Vintage EQ plug-ins also allow you to choose how the plug-ins process phase shifts. You can choose the Natural setting to emulate the boost or cut phase shifts of the original EQ, or the Linear setting to introduce no phase shifts, which is useful when making extreme boosts or cuts.
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Frequently asked questions
EQ stands for Equalisation, a process that uses filters at various frequency bands to shape the sound of an audio file, instrument or vocal performance.
Channel EQ is a versatile multiband EQ and one of the most-used Logic Pro plug-ins. It provides eight colour-coded frequency bands, including lowpass and highpass filters, low and high shelving filters, and four flexible parametric bands.
To add Channel EQ to your project, click the EQ overview on a channel strip or choose Equalizers > Channel EQ in a channel strip Audio Effect plug-in menu.
To adjust the gain and Q simultaneously, drag the intersection of vertical and horizontal lines in the selected band. To adjust the centre frequency only, drag the control point.
