Air Frequency
The 16–20 kHz band that gives mixes their open, shimmering, 'breathable' quality — and how to use it without harshness.
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Bell Curve
The parametric EQ bell curve is the single most-used frequency shaping tool in modern music production.
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Dynamic EQ
An EQ whose band gain reacts to signal level — combining surgical frequency precision with compressor-like transparency.
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EQ
Shapes audio by cutting or boosting specific frequency bands — the most fundamental tone-shaping tool in any mix.
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Filter
A filter attenuates selected frequency ranges, shaping tone in synthesis, mixing, and mastering through cutoff, slope, and resonance.
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Frequency
Frequency is the rate of sound wave oscillation measured in Hz — the single most foundational concept in mixing and sound design.
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Frequency Masking
Frequency Masking is the psychoacoustic effect where loud frequencies suppress the perceived loudness of quieter nearby frequencies in a mix.
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Fundamental Frequency
The lowest frequency component of any pitched sound — the single number that defines pitch identity, mix weight, and tonal character.
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Graphic EQ
A fixed-band equalizer whose slider positions visually map the frequency curve applied to an audio signal.
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Harmonic
Harmonics are integer-multiple frequency components above a fundamental that define timbre and drive every saturation and tonal decision in a mix.
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High-Pass Filter
A high-pass filter removes frequencies below a set cutoff, clearing rumble and mud from any signal in the mix.
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Linear Phase EQ
A phase-coherent equalizer that corrects frequency balance without introducing phase shift — essential on buses and masters.
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Low-Pass Filter
A low-pass filter passes frequencies below its cutoff and attenuates everything above — foundational to synthesis, mixing, and sound design.
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Mid-Side EQ
Mid-Side EQ processes center and side channels independently for surgical control over stereo width and frequency balance.
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Mud
Mud is the low-mid buildup (200–500 Hz) that clouds mixes — learn to identify and eliminate it at the source.
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Notch Filter
A narrow band-reject filter that surgically removes specific problem frequencies without disturbing the surrounding audio spectrum.
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Parametric EQ
Parametric EQ is the studio's most versatile frequency tool, offering independent control of center frequency, gain, and Q for each band.
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Presence
The 2–8 kHz presence region determines whether a sound sits forward and clear in a mix or recedes behind other elements.
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Q Factor
Q Factor defines how wide or narrow an EQ filter's bandwidth is — the single most important variable in surgical vs. musical EQ decisions.
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Resonance
Resonance is the boosting of a narrow frequency band at a filter's cutoff point, central to synthesis, EQ, and acoustic design.
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Shelf EQ
Shelf EQ boosts or cuts everything above or below a set frequency — the essential broadband tonal shaping tool in every mix.
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Sub Frequency
Sub Frequency (20–80 Hz) is the deepest audible band, delivering the physical weight behind kicks, 808s, and bass lines.
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