Trem Verb

How It Works

Technical view

The current base reverb core sums four damped comb stages, runs that field through two serial diffuser stages, and then shapes the result with a high shelf before blending it with the dry source. `space` stretches the delay lengths in the comb and diffuser network, `decay` raises the comb feedback coefficients, and `tone` opens the damping and final brightness, so this family is a single diffuse comb-and-diffuser reverb architecture shared across many names. There is no amplitude-modulation stage in the current code.

• Reverb & Space
• waveshaping / saturation
• delay processing
• oscillator / LFO modulation
• DC blocking

Signal Path

Compiled preview chain

Preview source: An internally generated picked-string phrase is widened to stereo with a 19-sample right-channel delay and slight left/right shelf-EQ offsets before it hits the reverb core.

1. 1internal picked-string demo phrase
2. 2stereo spread with a short right-channel delay
3. 3four parallel damped comb stages
4. 4two serial diffuser stages
5. 5post-reverb high-shelf shaping
6. 6dry / wet blend
7. 7DC blocker
8. 8output gain trim
9. 9final tanh limiter

Controls

Audible controls in this DSP

• mix

  Active

  Blends between the dry source and the wet reverb field after the reverb core.

  Lower settings stay more direct; higher settings move the patch further into the ambient tail.

• output_gain_db

  Active

  Applies final post-effect level trim after DC blocking and before the output limiter.

  Matches loudness without changing the actual reverb structure.

• space

  Active

  Expands the comb and diffuser delay lengths inside the diffuse reverb network.

  Moves the tail from tighter reflections toward a larger, more spread-out space.

• decay

  Active

  Raises the feedback coefficients of the parallel comb stages.

  Extends the tail and makes the ambience hang on longer.

• tone

  Active

  Raises the damping cutoffs inside the comb network and brightens the final high-shelf stage.

  Makes the tail darker at low settings and more open and glossy at high settings.

Analysis

Code-derived notes

Current implementation shares the same four-comb, two-diffuser diffuse reverb core across Plate, Plate Small, Plate Large, Chamber, Dattorro Reverb, Freeverb, JCREV, SATREV, Zita Light, Zita FDN, Nonlinear Reverb, Chop Verb, Ducked Verb, Trem Verb, and Magneto Echo-Verb. Trem Verb does not yet modulate the tail with tremolo.