Pad design

Definition and role

A pad is a sustained sound that fills the harmonic space behind the other elements: it holds the chords, creates atmosphere, and “glues” the arrangement together. A good pad is noticed more when you take it away than when it is there.

The four dimensions of a pad

1. Slow amplitude envelope: attack 200 ms – 2 s, high sustain, release 1–4 s. The slow attack leaves the transients to the drums and vocals.
2. Movement: slow LFOs (0.05–0.3 Hz) on cutoff, wavetable position, pan or pitch (±3–5 cents); unison beating and chorus.
3. Controlled spectrum: no fundamental below 150–200 Hz (the bass occupies it), soft highs (LP at 3–6 kHz), a zone of color in the mids.
4. Space: long reverb (hall or shimmer, 3–8 s), slow delay, stereo width.

Sound sources

• Subtractive: two detuned saws or pulses (±7–12 cents), 12/24 dB LP, slow filter envelope: the classic pads of the Jupiter-8, OB-Xa, Juno (Jup-8 V, OP-Xa V, Jun-6 V with its chorus).
• String machine: Solina V and ensemble chorus: '70s pads.
• Wavetable: vocal or spectral tables with modulated position.
• Additive / resynthesis: crystalline pads (Harmor).
• Granular: pads from recordings (voice, piano, noises) - the most personal pads.
• Vector: pads that travel between timbres (Prophet-VS V).
• Samples: choirs (Augmented Voices), Mellotron V for “tape” strings and flutes.

Voicing the pad's chords

• Avoid thirds that are too low: below C3 (130 Hz) thirds get muddy; below C2 they sound like mud.
• Open voicings (drop 2, fifths at the bottom, thirds and sevenths on top) make the pad wider without increasing the volume.
• Pad and piano should not play the same voicing in the same register: move the pad up an octave or use different notes (the pad holds the 3rd and 7th, the piano the root and 5th).
• Common tones held between one chord and the next (voice leading) avoid “holes” at the change.

EQ and pad mix

• HP at 150–250 Hz (depends on the bass), gentle (12 dB/oct).
• Wide cut at 300–500 Hz if it gets muddy; carve out 2–4 kHz if it covers the vocal (also with a dynamic EQ sidechained from the vocal).
• Light sidechain from the kick (2–4 dB) to let the groove breathe, even in non-EDM genres.
• Volume: often 10–15 dB below the vocal in RMS; it is felt as “air”.
• Stereo: wide, but check in mono.

Basic recipe (“warm” subtractive pad)

Two saws, detune ±8 cents, third voice (pulse 30%) an octave above at −10 dB. 24 dB LP at 2.5 kHz, resonance 10%, key tracking 50%. Filter envelope: attack 1.2 s, amount +20%. Amplitude: A 600 ms, D 1 s, S 85%, R 2.5 s. LFO 0.12 Hz → cutoff ±8%. Stereo chorus, 4 s hall reverb with 40 ms pre-delay, return EQ with HP at 300 Hz.

Example in A minor

Intro of an electropop song at 100 BPM: Am(add9) – Fmaj7 – C(add9)/G – G6 with voicings A2–E3–B3–C4 / F2–C3–E3–A3 / G2–C3–D3–E3 / G2–D3–E3–B3. The pad enters with a cutoff automation from 800 Hz to 3 kHz over 8 bars; in the chorus a second pad an octave above is added with shimmer for the opening.

Listening references

Vangelis's pads (Blade Runner, 1982, Yamaha CS-80, emulated by CS-80 V), the warm pads of '80s synthpop, the granular pads of modern ambient, the sidechained pads of future bass.

Common mistakes

• Pad too loud and too full of lows: “fog” in the mix.
• Pad with no movement: you stop hearing it after 4 bars (auditory adaptation).
• Reverb on the pad and everything else with the same time: no depth.

Exercise

1. Build the same pad with three engines (subtractive, wavetable, granular) and compare them in the same mix.
2. Try three voicings of the same progression and notice how the space for the vocal changes.

Related topics

“Voicings: close, open, drop 2, shell”, “Modulation matrix”, “Unison, detune and supersaw”, “Depth and perspective in the mix”, “Granular synthesis”.