7 Weird Mixing Terms And What They Mean | Music Think Tank

Guest post by Michael Hahn. This article originally appeared on Soundfly’s Flypaper

Engineers can get pretty fired up when they’re talking about mixing music. Your sound is a difficult thing to describe — throw in a layer of technical jargon and it can be downright frustrating just to talk about your tracks.

Fortunately, there are some common terms engineers use to help communicate mix issues and the qualities of sound. I’ll go through seven of the most common “odd” mixing terms, what they mean, and how to deal with the elements of your mix they refer to.

1. “Boomy”

Boominess refers to excessive low frequency energy that causes exaggerated sustain effects on your speakers. For example: “I want this kick to be fat, but right now it’s just boomy.”

Speakers can only accurately reproduce so much low end. Too much low frequency energy can make the speakers start to struggle. This causes negative ripple effects that can radiate all the way up the frequency spectrum.

How to fix it:

• Deal with boomy bass by using a high-pass filter on sources with a lot of low end.
• Move the filter up until you start to hear a negative impact on the sound — you might able to cut more than you think.

2. “Muddy”

Muddy generally means congestion from a buildup of competing elements in your low midrange. For example: “The whole mix gets muddy when I unmute the bass. Maybe I should cut some frequencies around 250 Hz.”

The low midrange is a tough region for beginner and intermediate engineers. When it’s too muddy, the clarity and separation of instruments takes a hit.

How to fix it:

• Avoid a muddy mix by carving out your low-mids wherever they’re not essential to your desired sound.
• Instruments that traditionally dominate the low end of the spectrum, like kick and bass, are a first choice for low-mid scooping. Most of the energy in these sources should be concentrated in the low end so the mids are less crowded for other instruments.

3. “Boxy”

Boxy refers to a sound or mix composed of mostly midrange frequencies with not enough lows and highs. For example: “These guitars are too boxy. We should try a mic with more high end.”

A boxy mix sounds flat and can lack detail. You’ll see why when you reference mix against a well-produced commercial recording.

How to fix it:

• Avoid boxiness by making sure to not over-boost your mids or neglect the extreme ends of your frequency spectrum.

4. “Warmth”

Warmth typically refers to harmonic distortion and un-hyped top end. For example: “Wow, adding that tube compressor plugin really warmed up this vocal.”

Warmth is a sought-after quality often attributed to analog equipment. It’s part of what makes a mix smooth, rich, and enjoyable to listen to.

How to get it:

• Create warmth by gently rolling off your highs and using saturation/analog-style processors.
• Be sure to do so in moderation — too much artificial saturation from analog emulation plugins can tip the scales back toward harshness. Don’t take it too far!

5. “Harsh”

Harshness is often used to describe aggressive upper midrange that’s fatiguing to listen to. For example: “The square wave synth is pretty harsh. Can you bring down the filter’s cutoff frequency a bit?”

Harshness is a major problem in lots of mixes. The last thing you want is for your mix to cause ear fatigue for your listeners. The effects of a harsh mix can be even worse on common listening systems like earbuds and laptop speakers.

How to fix it:

• Avoid harshness by being extra careful with your EQ and mic positioning when dealing with energy in the 3-5 kHz range.

6. “Depth”

Depth is the three-dimensional quality of a mix. For example: “Panning the room mics wider seems to give the drums a bit more depth.”

Depth is desirable for creating the immersive sensation that draws listeners into your mixes. It helps with instrument separation and the overall sense of space.

How to get it:

• Use a combination of close miking and distance miking while tracking to give yourself a variety of ambiences to blend during mixing.
• Different sources at different perceived distances and pan positions will help establish the depth of your mix.

7. “Air”

Air is the subtle liveliness in the upper frequencies of a mix. For example: “The overhead ribbon mics sound pretty dark and could use some air.”

Air brings out the realism and dimension in sources like vocals and room mics. A smooth, open, airy top end is a common aim for many mixes. Think of air as a present, pleasing, and well-EQ’d treble range in your mix.

How to get it:

• Use a gentle bell or shelving filter on your smoothest sounding EQ to lightly boost the top end anywhere from 8-16 kHz.
• Be careful, though! Going overboard can introduce harshness back into your track. A little bit goes a long way!

Subtle air in your mix can help your vocals sit smoothly on top of everything else and make your room mic recordings lively and realistic.

What we talk about when we talk about mixing

Mixing audio is a highly subjective process, so the terms we use to describe it are, too. Every engineer probably feels differently about what exactly “air” or “depth” means for them. The definitions of these terms are just guidelines to get you thinking and talking about the issues or strengths in your mix and how to better aim for a specific sound.

Now that you know what it all means, go deeper into your mix with a better destination in mind!

Learn more about modern mixing production techniques (like EQ, compression, levels, pan setting, digital signal processing, FX sends, and so much more) from some of today’s leading sound engineers, and get your record sounding crisp! Preview Soundfly’s newest and most in-depth mentorship-assisted online mixing courses, Faders Up I: Modern Mix Techniques and II: Advanced Mix Techniques, for free today.

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