Trifield LR→LRC Decoder DSP

By: Case

An implementation of Michael Gerzon's Trifield decoder.

The Trifield process is a form of audio rendering in which a conventional two-channel stereo signal is decoded (using Ambisonic principles) to an additional number of loudspeakers, typically three in the form of a Left-Center-Right front stage. The technique provides significant improvement to image stability, especially when the listener is moving or off-axis. It also addresses the problem in conventional stereo, where center images are recessed and less distinct due to the comb filtering arising from two sound sources emitting correlated signals.

Changelog can be found behind the home page link.

Current version: 1.1.4, released on 2023-03-16

Change log:

  • Added dark mode support.
  • Recompile with the latest SDK in foobar2000 v1.5 compatible mode.

Supported processor architectures: x86 32-bit, x86 64-bit.

Works with foobar2000 v1.5 and newer


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