Sound Engineering

Mixing Vocals: Level, Space and Automation

Garnish Music Production School·November 14, 2024

Most listeners hear a song through its vocal. If they cannot understand the words or feel the emotion, the mix has failed - however good everything else sounds. Mixing vocals is the most important single task in most mixes.

Level and rides

Getting the vocal level right is harder than it sounds, because it changes moment to moment.

  • Set a static level where the vocal sits on top of the track without feeling separate from it.
  • Ride the fader line by line, and sometimes word by word, so every word is audible. Quiet word endings and the first syllable of a phrase often need help.
  • Automate between sections. The vocal may need to be slightly louder in a dense chorus than in a sparse verse.

A well-ridden vocal needs less compression and sounds more natural.

Space: reverb

Reverb places the vocal in an acoustic space and gives it depth and polish.

  • Use sends, not inserts, so the dry vocal stays clear and you can control the reverb level independently.
  • Pre-delay - a short gap (often 20-80 ms) before the reverb starts - lets the dry vocal speak first and keeps it upfront while still giving it space.
  • Short rooms and plates keep the vocal close and present; long halls give drama but push the vocal back.
  • EQ the reverb return - cut the lows and some highs so the reverb does not muddy the mix or exaggerate sibilance.
  • Duck the reverb with sidechain compression from the dry vocal, so it blooms in the gaps rather than smearing the words.

Space: delay

Delay often gives a vocal space more clearly than reverb, because the repeats are distinct.

  • Slapback - a single short repeat (80-150 ms) for a vintage, upfront sound.
  • Tempo-synced 1/8 or 1/4 note delays, low in the mix, add width and depth without washing the vocal out.
  • Throws - automated sends for chosen words.
  • Filter the delay returns so they sit behind the dry vocal.

Many professional mixes use a combination: a short reverb for space, a tempo-synced delay for depth, and a longer reverb or delay for throws.

Making room in the track

Sometimes the vocal does not need to get louder - the track needs to make room.

  • EQ - cut a little in the instruments' presence range (around 2-5 kHz) to leave space for the vocal's intelligibility.
  • Dynamic EQ or sidechain - duck those frequencies in busy instruments only while the vocal is singing.
  • Arrangement - fewer competing parts in the vocal range during vocal lines.

Managing the stack

  • Bus all backing vocals and process them as one.
  • Pan and blend so the lead stays centre and clear.
  • Use more reverb on the stack than the lead so backing vocals sit further back.

Checking translation

  • Listen quietly. At low volume, can you still understand every word?
  • Check in mono. Panned doubles and wide effects can cause the vocal to change level or tone in mono.
  • Check on small speakers and headphones - phone, laptop, earbuds. Presence that is fine on studio monitors may vanish - or become harsh.
  • Compare with references at matched loudness.

Do this now

  • Ride the lead vocal fader through a whole song so every word is audible at low volume.
  • Set up a plate reverb send with 40 ms pre-delay and EQ on the return, ducked by the dry vocal.
  • Add a tempo-synced 1/8-note delay send at low level, filtered so it sits behind the vocal.
  • Check the mix in mono and on a phone speaker. Fix whatever disappears.