Sound & signal
Filter
A filter removes everything above or below a moving cutoff point. A high-pass strips the bottom away as you turn it up; a low-pass takes the top off as you turn it down.
Measured in our catalog
A filter moves a record along the same axis our analyser reads: brightness runs 2 to 100 across 443,242 tracks, at a median of 59.
A high-pass sweep is, in effect, temporarily raising a record’s brightness and stripping its bass weight — which is why filtering an already-bright record achieves so little and filtering a bass-heavy one changes everything. The catalog median bass weight is 88, so most records here have plenty for a filter to take away.
59
Median brightness
2
Darkest track
88
Median bass weight
443,242
Analysed tracks
Measured on 11 August 2026 across public tracks carrying analysed brightness and bass-weight values — readings of the recording, not of a filter setting.
Why it matters
A filter is one knob doing what three EQ knobs would take longer to do, which is why it has become the default transition tool on modern mixers. Sweeping a high-pass up on the outgoing track removes its low end and its weight in a single continuous gesture the room can follow.
That audibility is also the catch. An EQ move is invisible; a filter sweep announces itself, and a set built entirely on filters starts to sound like one trick repeated. It is best kept for moments where you want the room to notice.
Frequently asked
What is the difference between a filter and an EQ?+
An EQ adjusts fixed bands; a filter moves a cutoff point continuously and removes everything past it. The filter is faster and far more audible, which makes it a performance gesture rather than a corrective one.
When should you use a high-pass filter when mixing?+
On the outgoing track, sweeping up through a transition. It strips the low end away progressively so the incoming record can take over the bottom without a hard swap.
Why does everything sound the same when I filter?+
Because a sweep is a very recognisable gesture, and used on every transition it becomes the only thing anyone hears. Alternate it with EQ swaps, which do the same job without announcing themselves.
Related terms
Three-band EQ
A three-band EQ splits each channel into low, mid and high and gives you a knob for each. It is the primary tool for deciding which parts of two records are audible at any moment.
Kill EQ
A kill EQ removes a band completely when the knob is turned fully down, rather than merely attenuating it. On a mixer with true kills, taking the bass to zero leaves genuinely nothing below the crossover.
Sweep
A sweep moves a filter across a sound so its brightness travels — up towards a moment or down away from one. It works as an arrangement element inside a track and as a live move on a mixer.
Texture
Texture is the tone of a track rather than its rhythm — how bright, how warm, how bass-heavy, how percussive. Two tracks can agree on key and tempo and still clash on texture.
Explore: Mixing guides · Three-band EQ · Sweep · All DJ terms