# Weld changelog

## 0.3.0

- Show the **delay spread**: how much the alignment's group delay changes
  between 500 Hz and 4 kHz, where listeners hear it best. Above 0.64 ms (the
  threshold Liski et al. 2021 measured on clicks) a note suggests comparing
  attacks in SUM and SUM DRY. Display only; the sound does not change.

## 0.2.0

- Change the CLAP ID to `io.narl.bass-foundry.weld`. Hosts see this as a new
  plugin: delete the old `.clap` file, rescan, and add the plugin again in
  existing projects.

## 0.1.0

- Introduce Weld, a phase aligner for layered bass.
- Hears the other layer through the sidechain input and fits polarity plus up to
  four allpass sections, so the layers sum instead of cancelling. No latency;
  the layer on its own keeps its sound.
- Modes: Follow (refits only when clearly better), Learn (measure one take,
  apply on exit), Hold. The alignment is saved with the project.
- Display: level per band against a perfect alignment (lost and won back),
  phase before and after, recovered dB, cancellation cost, time offset, and
  warnings for a late layer, unrelated layers and a missing sidechain.
- Controls: Mode, Sections, Response, Low, High, Gate, Listen (Layer, Sum,
  Sum dry), Output, Bypass.