From fdcc732c83e5551878295c7b1c97b14c4e086e3d Mon Sep 17 00:00:00 2001
From: Stan Grams <sjg@haxx.space>
Date: Sun, 1 Mar 2026 00:38:44 +0100
Subject: [PATCH] [fix](trx-backend-soapysdr): retune wfm fir window

Signed-off-by: Stan Grams <sjg@haxx.space>
---
 src/trx-server/trx-backend/trx-backend-soapysdr/src/demod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/trx-server/trx-backend/trx-backend-soapysdr/src/demod.rs b/src/trx-server/trx-backend/trx-backend-soapysdr/src/demod.rs
index e736cae..fed2be1 100644
--- a/src/trx-server/trx-backend/trx-backend-soapysdr/src/demod.rs
+++ b/src/trx-server/trx-backend/trx-backend-soapysdr/src/demod.rs
@@ -65,7 +65,7 @@ fn build_wfm_resample_bank() -> [[f32; WFM_RESAMP_TAPS]; WFM_RESAMP_PHASES] {
                 1.0
             } else {
                 let pos = tap_idx as f32 / (WFM_RESAMP_TAPS - 1) as f32;
-                0.5 - 0.5 * (2.0 * std::f32::consts::PI * pos).cos()
+                0.54 - 0.46 * (2.0 * std::f32::consts::PI * pos).cos()
             };
             *coeff = sinc * window;
             sum += *coeff;