sjg/trx-rs
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[fix](trx-backend-soapysdr): widen wfm audio bandwidth to 18 kHz

Browse Source 
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 09:11:50 +01:00
parent 4994a869f9
commit 1ba9c9dd3e
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/trx-server/trx-backend/trx-backend-soapysdr/src/demod.rs
+1 -1
View File
@@ -13,7 +13,7 @@ const PILOT_HZ: f32 = 19_000.0;
/// Audio bandwidth for WFM (Hz). /// Audio bandwidth for WFM (Hz).
/// 15.8 kHz leaves guard band below the 19 kHz pilot and reduces top-end /// 15.8 kHz leaves guard band below the 19 kHz pilot and reduces top-end
/// artifacts on strong signals while preserving the useful broadcast range. /// artifacts on strong signals while preserving the useful broadcast range.
const AUDIO_BW_HZ: f32 = 15_800.0; const AUDIO_BW_HZ: f32 = 18_000.0;
/// Stereo L-R subchannel bandwidth for WFM (Hz). /// Stereo L-R subchannel bandwidth for WFM (Hz).
/// Must match AUDIO_BW_HZ so the sum and diff filter paths have identical /// Must match AUDIO_BW_HZ so the sum and diff filter paths have identical
/// group delay, which is critical for stereo separation across all frequencies. /// group delay, which is critical for stereo separation across all frequencies.