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Airchain

FM radio airchain emulation — AGC, four-band squash, emphasis, clipper and transmission artifacts behind one big SQUASH knob.

VST3 / AUmacOS14 presets
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Help Center · BPM Forge

Read delay times for a tempo

The delay grid — straight, dotted and triplet times for every note value, in milliseconds or hertz, one tap to copy.

Open BPM Forge

On this page
  1. Where it is
  2. Reading the grid
  3. Milliseconds or hertz
  4. Copy a value
  5. Using the numbers
  6. Calculators

Delay times turns the current tempo into delay times for every common note value, so a delay, a reverb pre-delay or a modulation rate sits in the groove instead of fighting it.

Where it is

On the Tapper tab, right under the BPM field — beside the tapper on a wide screen. It follows whatever tempo the big number shows — tapped, typed, recalled from Previous BPMs or loaded from a setlist song — and updates the moment the tempo changes. The tag next to the heading says which tempo it is using and whether it is live (you are tapping) or set (typed or loaded). Until there is a tempo the grid shows —.

Reading the grid

One row per note value — 1/1 (whole) down to 1/32 — and three columns:

  • Straight — the plain note value.
  • Dotted — one and a half times as long (a dotted eighth is the classic rhythmic delay).
  • Triplet — two thirds as long (the 1/8 triplet swings, the 1/16 triplet shimmers).

A quarter note is 60000 ÷ BPM milliseconds; every other value follows from it. At 120 BPM: quarter 500 ms, dotted eighth 375 ms, eighth triplet 166.7 ms.

Milliseconds or hertz

The ms / Hz switch changes the unit. Hertz is the same note value as a rate — what a tremolo, chorus or auto-pan LFO wants. The choice is remembered.

Copy a value

Tap any value: it is copied to the clipboard (a ✓ confirms it), ready to paste into a plugin or a console's delay field.

Using the numbers

  • Rhythmic delay — the dotted eighth or the quarter is the usual start.
  • Reverb pre-delay — a short value such as the 1/32 or 1/16 keeps the reverb clear of the transient.
  • Tempo-synced FX without host sync — type the tempo into the BPM field and read the grid; nothing needs to be connected.

Calculators

Calculators, the last section of the Tapper, holds:

  • Tempo ↔ pitch — matching one track's tempo to another by speed: the pitch-fader percentage and the semitones it costs (120 → 126 BPM is +5 %, +0.84 semitones), and the tempo a pitch-fader setting gives.

Delaying a speaker to the main system — delay towers, front fills — is in RoomSense → EQ & Delay → Delay Alignment.

TempoSense shows the classic list of these values next to the tempo it detects in the room. Both tools use the same calculation, so the numbers never disagree.

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