Trifield LR→LRC Decoder DSP

Component for foobar2000 v1.4 alpha and newer.

foobar2000 v1.1 version available here.

Version:1.1.2
Released:2018-08-27 15:26
Size:21.3 KB
License:GNU Affero General Public License

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foo_dsp_trifield

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Description

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.

Changes

1.1.2 (2018-08-27):Fixed left and right channels being reversed
1.1.1 (2018-01-06):No changes in functionality. Dynamic C runtime version for foobar2000 v1.4
1.1 (2017-06-07):Added more information to the about dialog. Lowered minimum crossover frequency to 350 Hz. Removed 192 kHz upper limit for sampling frequency
1.0 (2017-06-02):Initial version