---
title: Tape Restoration
emoji: 🎞️
colorFrom: yellow
colorTo: red
sdk: gradio
sdk_version: 6.19.0
app_file: app.py
pinned: false
---

# Analog Tape Restoration

Upload audio digitized from a degraded analog master (soundtrack cue, film
master, etc.) and restore it toward studio quality:

- **De-click / de-pop** — removes splice pops, dirt, dropouts
- **De-hum** — removes 50/60 Hz mains hum and harmonics
- **De-hiss** — spectral-gating broadband noise reduction, ideally profiled
  from an actual noise-only region of the tape
- **Wow/flutter smoothing** — mild envelope-based warble reduction (not a
  substitute for dedicated pitch-correction tools on severe cases)
- **EQ restoration** — rebuilds lost highs/lows from tape rolloff
- **Dynamics restoration** — gentle expansion + limiting to restore punch

For the best noise reduction, mark 1–2 seconds of pure hiss/room tone (no
music) from the head or tail of the reel using the noise-sample controls.

Long files are slow on free CPU hardware; this Space caps input at 20
minutes. For longer masters, run `tape_restore.py` locally — see the
docstring at the top of that file for CLI usage.