Restoration Filter From version 1.7

Equalizer

Shape the sound, band by band.

Equalizer in jd.Edit

What the effect is for

The equalizer boosts or cuts what a recording needs: mud around 300 Hz, presence around 3 kHz, air above 8 kHz, rumble at the very bottom. Every band has a shape, frequency, gain and Q; cuts have a slope from 12 to 96 dB per octave. The curve on the display is the real response of the filters, and its points can be dragged with a finger: sideways for frequency, vertically for gain, two fingers for Q.

While previewing, the analyzer runs behind the curve and shows the spectrum after the EQ — so you can see where the energy sits and whether the move lands. A band can become dynamic: it only moves once its range exceeds the threshold, for sibilance or boom that only appears sometimes. On stereo files a band can act on the left, right, mid or side only. Linear phase processes the static bands without phase shift.

Benefits

  • ✓Up to 24 bands in eight shapes — from a gentle shelf to a surgical notch.
  • ✓Shape right on the display: drag, double-tap to add a band, hold to grab an analyzer peak.
  • ✓Dynamics per band with auto threshold: only acts when needed — a de-esser or anti-mud from inside the EQ.
  • ✓Presets to start from, matching to a reference file, sketching the curve you want, auto gain against loudness jumps.

Pro feature — try it twenty times for free, then a one-time unlock.

When it makes sense

Clearer speech

Preset “Speech clear”: low cut 80 Hz, −2 dB at 250 Hz, +2.5 dB at 3 kHz, a touch of treble.

Boom only sometimes

Bell at 300 Hz, range −4 dB, threshold auto: only pushes when the mud actually comes.

Match two recordings

“Match” with the better-sounding file as reference — amount 70 %, 8 bands.

Remove a tone

Notch with Q 20 on the tone, placed by holding right on the analyzer peak.

Controls

DisplayDrag points (frequency/gain), two fingers for Q, double-tap adds or removes, hold grabs an analyzer peak.
Shape and channelBell, low/high shelf, low/high cut, notch, band pass, tilt; stereo, L, R, mid, side.
Frequency, gain, Q10 Hz–30 kHz, ±30 dB, Q 0.1–40; cuts with slope 12–96 dB/oct.
DynamicsRange ±30 dB, threshold fixed or auto, attack 0.5–250 ms, release 5 ms–2 s.
OutputOutput ±24 dB, gain scale 0–200 %, auto gain, zero latency or linear phase, polarity.
ToolsPresets, match (reference file, amount, band count), sketch, analyzer off/on/hold, range ±3 to ±30 dB, solo per band.

Tips

💡Cut first, then boost — cutting almost always sounds more natural, and auto gain keeps the loudness level.

💡Wide bells (Q around 1) for tone, narrow ones (Q above 5) only for tones that disturb; linear phase only when phase shift bothers you — it costs 128 ms of latency, which the editor compensates.

Chain order: High-pass → Leveler → Compressor → De-Esser → SoundsBetter → Limiter. The effects list can be reordered with “Reorder”.

Want to try it?

jd.Edit is free; every Pro feature can be used twenty times at no cost.

On the App Store