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[fix](trx-backend-soapysdr): increase wfm stereo matrix gain to 0.80

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More stereo headroom for broadcast audio. With WFM_OUTPUT_GAIN at 0.35
the effective output is 0.28 peak, well within clipping margin.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
This commit is contained in:
Stan Grams
2026-03-01 11:19:50 +01:00
parent f7c10a0185
commit 313c9b39a6
1 changed files with 1 additions and 1 deletions
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src/trx-server/trx-backend/trx-backend-soapysdr/src/demod.rs
+1 -1
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@@ -33,7 +33,7 @@ const STEREO_SEPARATION_PHASE_TRIM: f32 = 0.0;
const STEREO_SEPARATION_GAIN: f32 = 1.000; const STEREO_SEPARATION_GAIN: f32 = 1.000;
/// Extra headroom in the stereo matrix to reduce stereo-only clipping/IMD on /// Extra headroom in the stereo matrix to reduce stereo-only clipping/IMD on
/// strong program material. This keeps bass excursions from flattening treble. /// strong program material. This keeps bass excursions from flattening treble.
const STEREO_MATRIX_GAIN: f32 = 0.50; const STEREO_MATRIX_GAIN: f32 = 0.80;
/// Stereo detection runs every N composite samples to reduce CPU. /// Stereo detection runs every N composite samples to reduce CPU.
const STEREO_DETECT_DECIMATION: u32 = 16; const STEREO_DETECT_DECIMATION: u32 = 16;
/// Gentle high-pass memory for the stereo L-R path. /// Gentle high-pass memory for the stereo L-R path.