Getting Started with DecayCore

Download DecayCore, measure or import your speakers, create your first FIR filters, and verify the result.

This is the shortest path from downloading DecayCore to using a verified pair of correction filters.

Before you start

You need a calibrated measurement microphone, a way to play the measurement sweep, and a playback system that accepts FIR convolution filters. For most users, the packaged release is the right choice because it includes guided measurement and Automatic mode.

1. Download and open DecayCore

  1. Download the package for your operating system from GitHub Releases.
  2. Extract the archive and start DecayCore.
  3. If the browser does not open, go to http://127.0.0.1:8080.

See the Installation guide for platform-specific steps or source installation.

2. Measure your speakers

The recommended method is the guided workflow on the Measure page:

  1. Connect your calibrated microphone.
  2. Load its calibration file.
  3. Measure Left and Right separately.
  4. Save the session and load the resulting impulse-response WAV files on the Files page.

You can instead import compatible REW text exports containing frequency, magnitude, and phase, or mono impulse-response WAV files. See Measurement for platform support, subwoofer routing, and export requirements.

3. Start with Automatic mode

For a first run in a packaged release:

Automatic mode searches and ranks several guarded presets. Avoid trying to fill deep dips with extra boost; moving the speakers, changing the crossover, or treating the room is usually more effective.

Source checkouts do not include the packaged Automatic mode engine. Use Basic for a conservative manual starting point when running from source.

4. Generate and inspect

  1. Open START / Results and press START.
  2. Wait for the run to finish.
  3. Review warnings, the selected solution, response plots, and the summary.
  4. If a critical health check appears, correct its cause before exporting.

5. Export and load the filters

Download the result ZIP or open the output folder shown on the results page. It contains convolution-ready WAV filters and supporting configuration files.

6. Measure again

Activate the filters at a reduced listening level and repeat the measurement. Confirm that:

Do not judge success from the generated graph alone. The verification measurement includes the real playback chain and room.

Next steps