This site is the home of ConvoFS, a convolving file system which offers a new way of applying digital room correction (DRC) filters. The site provides you with a lot of information and answers some of the questions you may have about ConvoFS.

As the name may hint, ConvoFS was initially only intended for digital room correction (DRC) use. But with features such as upsampling, M/S encoding, and LoCo support, you may choose to use it just for those purposes.

If you have questions/problems/ideas related to ConvoFS, don’t hesitate to drop me a note (see the copyright/contact section).

Also: if you would like to get relevant notifications in your mailbox about new ConvoFS releases/features, an announcement mailing list has been created:

ConvoFS announcement mailing list

What’s new in ConvoFS 3.0.0?

  • New memory-based internal caching system
  • Advanced up/resampling features.

Please refer to the two last parts of the general concepts section of the documentation. If you’re upgrading from 2.x, you’re advised to - after having upgraded - to rebuild the internal ConvoFS meta database. You can do this from the maintenance tab.

What was new in ConvoFS 2.0.0 .. 2.3.x?

  • Add ConvoFS support for Frankl’s LoCoTest program for generating LoCo filters.
  • Synology distribution: ship with LoCoTest v0.5. See the ‘general concepts section below.
  • Enhancements to the extended web interface.
  • Better handling of per-track configuration changes to avoid track skipping.
  • Extended control of playback preferences including a basic mode.
  • Add German translation of web interface.
  • Introduce “aggressive convolving”.
  • Add web interface colored activity indicator
  • Preliminary support for DSD upsampling and preparation for PCM d.o. Currently not enabled in the Synology builds. See info later in this document.
  • Provide help with debugging clipping issues.
  • LoCo encoding.
  • Phase/Polarity manipulation.
  • Define DRC parameters (attenuation, phase, etc.) per bank, not globally.
  • Customizable logging verbosity leading to smaller log/config bundles.
  • Improved help pages.
  • Internals: generate proper, persistent inode numbers.

For detailed changelogs, go to the appropriate section of this site.

N.B.: ConvoFS 2.1.x and later on Synology requires the version 4 base package. If you run 2.0.x, you’ll have to upgrade the base package before upgrading ConvoFS. The base packages contain executable code compiled for 64-bit computers. Consequently, some Synology boxes that were supported by ConvoFS 1.x cannot run later releases. Known to include DS214play.