Chapter 1 : EQs and Filters
Equalizers are used to alter specific areas within the audio frequency spectrum. To fully master how to work with EQ's, it is important to understand the relationship between frequencies. musical pitches, and harmonics.
Filters are used to cut or boost specific frequencies. On their own, they are generally used to color sound. EQ's are collections of filters, and are generally used for tonal equalization by allowing certain frequencies to pass through unchanged while boosting or attenuating the level of others. See and hear how the phase of a signal is affected when processed with EQ.
Discover how these two filters work to shape and sculpt either the low or high end of a sound's frequency range.
Learn how to create pass bands that allow a narrow range of frequencies to pass through while higher and lower values are attenuated. Also see how to set up the opposite, a stop band to attenuate a narrow range while allowing higher and lower frequencies to pass through.
Shelving EQ's provide constant gain change (either boost or cut) beyond a user definable shelf frequency and are useful for gentle overall tonal adjustments rather than the steep progressive cuts of low and high pass filters. See and hear how Low Shelf and Hi Shelf EQ's work on various instruments.
Designed primarily for live use, graphic EQ's are based around a large number of fixed frequency filters (usually 31 bands) each with fixed bandwidth. A vertical boost/cut slider is the only control over each band.
Also sometimes referred to as Peak Notch filters, they are the most flexible of all. Parametric EQs' allow for adjustable center frequency, gain, and bandwidth (referred to as "Q"). They are great for targeting specific areas of the frequency spectrum.
Explore some ideas and strategies to think about as you approach EQ'ing elements in your mix.
Many EQ plug-ins offer a spectral matching capability where the EQ curve of one source is applied to another. Learn some interesting and creative ways of using and abusing these functions.
Chapter 2 : EQ In Action
Watch and listen as the results of various mic placements are demonstrated, compared, and contrasted, on both acoustic guitar and an electric guitar amp.
Watch and listen as the results of various mic positioning and distances are demonstrated, compared, and contrasted during the process of recording a female vocalist.
Watch and listen as a variety of high and low shelf, parametric, and hi-pass filters are used to tighten up and focus the sound on the various elements of a multi-tracked drum kit.
Discover how to use parametric EQ's to notch out various frequencies on multiple guitar parts to separate them from each other.
Watch as steep high pass and low pass filters are used to create a bandpass effect, while a parametric band is used to carve out some sonic contour within the limited range passing through the EQ.
Consider the range and timbre of the acoustic guitar parts being played as we carve away different areas of the frequency spectrum to help them blend better with the rest of the mix.
Explore how EQ is used for gentle sweetening on female vocals in both the upper and low ends of the frequency spectrum.
Listen and compare each section of the mix back to back with and without EQ applied.
See how linear phase EQ is used for subtle broad tweaks on a finished stereo mix.
Equalization or "EQ" as it's commonly referred to, is the most basic, but important effect you'll apply to your tracks and recordings. But do you really know how to effectively use it, or better yet, how to not use it? Well, Eli Krantzberg is back yet again with another truly awesome product, "EQ Explained".
Eli starts at the beginning, with the frequency spectrum and the important relationship between frequencies, musical pitches, and harmonics. Next are filters and how they work and interact with your sound. Eli then demystifies Low & Hi Pass Filters, Band Pass & Reject Filters, Shelving EQ, Graphic Equalizers and Parametric EQ's. Eli wraps up the first category with priceless tips, strategies and creative ways to use Spectral and EQ Matching plug-ins.
Eli continues with a category called "EQ in Action" where he shows you how good EQ begins with proper mic placement when recording acoustic and electric guitars, vocals and drums. He then continues by demonstrating how EQ is used within a mix to separate instruments in similar tonal ranges, and blend others. And finally, how to listen and compare sections of a song with and without EQ and how to use Linear Phase EQ for subtle, broad strokes on a finished stereo mix.
The practice of using EQ is one that you can never know enough about. Even if you have some experience using EQ, it's a great idea to learn other approaches for using it. So dig in and learn to sculpt your sound like a true sonic artist... Get "EQ Explained" today.
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