FreqEnforcer

FreqEnforcer is a small desktop tool for pitch-correcting monophonic samples to a target note, tailored towards sample editing for Sparta Remixers aswell as YTPMVs.

Features

• Load audio files:(.wav, .mp3, .flac, .ogg supported)
• Detect predominant pitch
• Pitch-correct to a selected target note
• Optional time-stretch and normalization
• Cleanliness (harmonic isolation)
  • Amount slider removes non-harmonic content between harmonic lines
  • Advanced Mode exposes manual cleanup controls (Low Cut + High Shelf)
  • When Advanced Mode is off, Low Cut / High Shelf are auto-driven by Amount
• Export processed audio to WAV
  • Exported WAVs are tagged with sampler metadata (smpl + inst RIFF chunks) so many DAWs/samplers can auto-detect the root note

Requirements

• Windows 10/11
• Python 3.11+

Run from source

From the repo root:

python -m venv .venv
.\.venv\Scripts\python.exe -m pip install --upgrade pip
.\.venv\Scripts\pip.exe install -r spartan_tuner\requirements.txt

.\.venv\Scripts\python.exe spartan_tuner\main.py

Build (Windows)

Generate ICON.ico (if needed)

From the repo root:

py -3 tools\make_ico.py

Build the standalone app (PyInstaller)

py -3.14 -m PyInstaller --clean -y FreqEnforcer.spec

The output EXE is under dist\FreqEnforcer\FreqEnforcer.exe.

How to try them

1. Launch the app.
2. Drag & drop one of the files from spartan_tuner\test\ into the window.
3. Toggle between original/processed where applicable and export.
4. (Optional) Drag the exported WAV into your DAW sampler.
   • The export includes WAV sampler metadata (smpl + inst) so many samplers can auto-set the root note.

This repo contains local/test audio files under spartan_tuner\ (WAVs generated during development). Most audio is ignored by .gitignore to keep the repo small, but the curated examples in spartan_tuner\test\ are intended to be kept for the public beta.