Mic preamp

InterMic

A warm mic preamp for live vocals, with air, a gain rider, stage bleed taken out by a custom-trained AI model, and feedback caught as it starts to ring.

Latency
0 samples
CPU
0.9%, Apple M4 Pro
Formats
VST3, Audio Unit
Platforms
macOS, Windows
Channels
Mono, stereo

Free for 14 days, no key needed. Then it needs a licence. The price includes VAT.

The InterMic panel: input meter and GAIN, the DE-BLEED and DE-FEEDBACK faders, ADD AIR with FREQ, RIDE with RANGE, output meter and BEEF, with the HP and LP filters along the bottom

On the panel

The InterMic panel with eight numbered marks
  1. 1

    Gain

    The preamp's input gain, ±24 dB.

  2. 2

    Beef

    Warm saturation: L thickens the body, H adds bite on top.

  3. 3

    Add air

    Smooth air on top of the voice, following its level. FREQ sets where the top of the lift arrives.

  4. 4

    Ride

    A gain rider, working within RANGE, up to 12 dB.

  5. 5

    De-bleed

    Turns the stage sound down around the voice, between the words and between the lines.

  6. 6

    De-feedback

    Finds feedback and notches it as it starts to ring.

  7. 7

    Rider target level

    The band on the input meter: drag it to where the signal should sit, and RIDE keeps it there.

  8. 8

    Rider floor

    The wedge beside the input meter. Below it RIDE stops riding, so it doesn't pull the stage up between phrases.

How I use it

On a live vocal

  1. Set the target: the band on the input meter, where RIDE holds the voice. The default, −20 dB, is usually where I want it, so I often leave it.
  2. Bring the voice up to it with GAIN. Aim for the vocal to sit around the band.
  3. DE-BLEED, about 30%. On a quiet stage with a strong singer, 20 to 30% is enough, and buys me a few dB more gain before feedback. On a loud stage and singer I might go further.
  4. DE-FEEDBACK around 40%, where the Live vocals preset puts it.
  5. LP to shave the very top. Taking off the highest frequencies takes away more of what can feed back.
  6. ADD AIR to put the detail back. I end up between 40 and 60%. Where FREQ goes is taste: move it until the voice opens up again.
  7. Let RIDE work about 3 dB: set RANGE to around 3 dB.
  8. HP around 120 to 150 Hz, unless something after InterMic already cuts the lows (InterTone, for example).

The preamp

Start here. GAIN brings the voice up. BEEF adds warm, mostly second-harmonic saturation: L thickens the body, H adds bite on top.

The row of knobs along the bottom of the panel: GAIN, FREQ, RANGE and BEEF with its L and H switch

Add air

Smooth air on top of the voice, without the hiss and harshness. It follows level, band by band: quiet material comes up a long way, and loud material hardly at all. The fader sets how much and FREQ where the top of the lift arrives, at a fixed frequency that no longer follows LP. It's subtle by design.

The InterMic panel with ADD AIR and its FREQ knob lit and the rest dimmed: ADD AIR at 71%, FREQ at 9000 Hz
Amount
0 to 100%
Freq
6.5 to 14 kHz, 9 kHz at 12 o'clock

The extras

Three things a vocal channel on a stage needs, in the same insert.

DE-BLEED at 26% taking 0.3 dB, DE-FEEDBACK at 41%, ADD AIR at 71% with FREQ at 9000 Hz, and RIDE riding the vocal 1.2 dB down within a RANGE of 4 dB

Ride

A gain rider that keeps the vocal at its level: it boosts within RANGE, up to 12 dB, and ducks further than it boosts.

De-bleed

A custom-trained AI model hears the singer, and InterMic turns the stage sound down around the voice, between the words and between the lines. ECO uses a lighter model and less CPU.

De-feedback

Finds acoustic feedback and notches it as it starts to ring, with up to four notches at once.

Specs

Latency
0 samples
CPU
0.9% of a 14-core Apple M4 Pro, every stage on, mono, 48 kHz
Formats
VST3, Audio Unit
macOS
Apple silicon and Intel
Windows
x64
Channels
Mono, stereo
Version
0.12.12

InterMic user guide

Download

Version 0.12.12 · 5.3 MB for macOS, 3.8 MB for Windows · VST3 and Audio Unit on macOS, VST3 on Windows

Several plug-ins to update? The Suite installer updates them in one go, and you choose which.

New in 0.12.11

DE-FEEDBACK stops mistaking long held notes for feedback. On a clean, strong voice, it could take a long sustained note for a howl and notch it down, and that note and others at the same pitch stayed turned down for 10 to 25 seconds. Replaying 72.7 hours of raw vocals from a four-day gig with no real feedback, InterMic made 273 of these notches. It now makes 26.

  • Between 250 Hz and 1.1 kHz, where a singing voice's main notes sit, DE-FEEDBACK now asks one more question before it notches: a voice carries harmonics and its pitch moves, and a howl usually does neither. Nothing changes above or below that range.
  • A few false notches remain: 26 in those 72.7 hours, 8 of them above the range the new check covers.
  • Check this at your next soundcheck. A real howl between 250 Hz and 1.1 kHz is now caught a little later, about 0.1 to 0.2 seconds in my tests, and a few dB louder before the notch lands, because a howl grows quickly. That comes from a simulated room: I have no recording of real feedback in this range to test against, so this is the part I have not been able to prove.
  • Push the gain until it rings, on a few notes in that range, before you rely on it at a show. If a howl gets through, or the notch lands too late, I would like to hear about it.
  • No control, default or setting changed, and your projects and presets open as before. CPU use is the same.

All InterMic release notes

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