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DROPSHIFT v1.0 [UNIFIED PLUGIN INSTALLER & EVALUATION]
Polyphonic Down-Tuner Audio Plugin (Rust / nih-plug)
Created by Piotr Bogus // Animus Vertex
Official Store: https://gumroad.com/animusvertex#dropshift
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PRODUCT OVERVIEW:
DROPSHIFT is a polyphonic down-tuning plugin engineered in pure Rust 
with the nih-plug framework and egui GPU interface. 
Drop down from 1 to 7 semitones (Eb down to A) or a full octave (OCT, -12 st) 
with phase-coherent SOLA grain splicing, preserving transient pick attack 
and instrument body resonance.

CORE DSP ARCHITECTURE:
* Engine: Pure Rust Audio DSP (nih-plug framework)
* Algorithm: Waveform-aligned SOLA grain splicing with normalized cross-correlation
* Formant Preservation: LPC order 14 lattice filter with 1000 Hz crossover 
  (maintains guitar body resonance & 2–5 kHz pickup peaks)
* Tight Attack: Dual-envelope pick attack transient detector
* Formats: VST3 & AU (Windows & macOS x64/ARM)
* Controls: 270° discrete Drop knob, smoothed Mix slider, footswitch crossfade bypass

INSTALLATION INSTRUCTIONS:
Windows:
  Copy 'DROPSHIFT.vst3' into:
  C:\Program Files\Common Files\VST3\

macOS:
  Copy 'DROPSHIFT.vst3' into:
  /Library/Audio/Plug-Ins/VST3/
  Copy 'DROPSHIFT.component' (Audio Unit) into:
  /Library/Audio/Plug-Ins/Components/

UNIFIED INSTALLER & LICENSING MODEL:
This file is the full, identical production binary of DROPSHIFT.

1. EVALUATION MODE:
   Until activated with an official license key, the plugin runs in 
   free evaluation mode with 100% full DSP functionality and all controls 
   enabled, emitting a brief periodic white noise watermark every 5 seconds.

2. UNLOCKING THE FULL WATERMARK-FREE VERSION:
   No re-installation or file replacement is necessary!
   To permanently unlock the plugin:
   a. Purchase an official license key on Gumroad:
      https://gumroad.com/animusvertex#dropshift
   b. Open DROPSHIFT in your DAW (Logic Pro, Reaper, Ableton, FL Studio, Cubase, etc.)
   c. Click the "LICENSE" button / lock icon in the top header
   d. Paste your Gumroad license key and click "ACTIVATE"
   e. The watermark is instantly removed and your plugin is permanently registered.

SUPPORT & INQUIRIES:
Email: kontakt@animusvertex.com
Website: https://animusvertex.com
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