[fix](trx-rds,trx-backend-soapysdr,trx-frontend-http): relax rds filtering

Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>

src/decoders/trx-rds/src/lib.rs

@@ -14,8 +14,6 @@ const SEARCH_REG_MASK: u32 = (1 << 26) - 1;
 const PHASE_CANDIDATES: usize = 8;
 const BIPHASE_CLOCK_WINDOW: usize = 128;
 const RDS_BASEBAND_LP_HZ: f32 = 2_400.0;
-const MIN_LOCK_QUALITY: f32 = 0.08;
-const MIN_BIT_CONFIDENCE: f32 = 0.002;
 const PS_VOTE_COMMIT_SCORE: u8 = 3;
 
 const OFFSET_A: u16 = 0x0FC;
@@ -83,7 +81,6 @@ struct Candidate {
     block_a: u16,
     block_b: u16,
     score: u32,
-    bit_conf_avg: f32,
     block_conf_sum: f32,
     block_conf_count: u8,
     state: RdsData,
@@ -115,7 +112,6 @@ impl Candidate {
             block_a: 0,
             block_b: 0,
             score: 0,
-            bit_conf_avg: 0.0,
             block_conf_sum: 0.0,
             block_conf_count: 0,
             state: RdsData::default(),
@@ -151,7 +147,6 @@ impl Candidate {
             self.clock = (self.clock + 1) % BIPHASE_CLOCK_WINDOW;
             let quality = quality.clamp(0.0, 1.0);
             let bit_confidence = magnitude * quality;
-            self.bit_conf_avg = self.bit_conf_avg * 0.995 + bit_confidence * 0.005;
 
             if self.clock == 0 {
                 let mut even_sum = 0.0;
@@ -170,10 +165,6 @@ impl Candidate {
             }
 
             if emit_bit {
-                let threshold = (self.bit_conf_avg * 0.35).max(MIN_BIT_CONFIDENCE);
-                if bit_confidence < threshold {
-                    return None;
-                }
                 let input_bit = biphase_i >= 0.0;
                 let bit = (input_bit != self.prev_input_bit) as u8;
                 self.prev_input_bit = input_bit;
@@ -413,9 +404,6 @@ impl RdsDecoder {
     }
 
     pub fn process_sample(&mut self, sample: f32, quality: f32) -> Option<&RdsData> {
-        if quality < MIN_LOCK_QUALITY {
-            return self.best_state.as_ref();
-        }
         let (sin_p, cos_p) = self.carrier_phase.sin_cos();
         self.carrier_phase = (self.carrier_phase + self.carrier_inc).rem_euclid(TAU);
         let mixed_i = self.i_lp.process(sample * cos_p * 2.0);

src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js

@@ -3210,9 +3210,10 @@ function clearSpectrumCanvas() {
 }
 
 function formatOverlayPs(ps) {
-  const raw = String(ps ?? "").slice(0, 8);
-  const leadingBlanks = raw.match(/^ */)?.[0].length ?? 0;
-  return `${"_".repeat(leadingBlanks)}${raw.slice(leadingBlanks)}`.padEnd(8, "_");
+  return String(ps ?? "")
+    .slice(0, 8)
+    .padEnd(8, "_")
+    .replaceAll(" ", "_");
 }
 
 function formatOverlayPi(pi) {

src/trx-server/trx-backend/trx-backend-soapysdr/src/demod.rs

@@ -121,7 +121,7 @@ impl WfmStereoDecoder {
 
             let pilot_mag = (i * i + q * q).sqrt();
             let stereo_blend = (pilot_mag * 40.0).clamp(0.0, 1.0);
-            let rds_quality = (pilot_mag * 45.0).clamp(0.0, 1.0);
+            let rds_quality = (0.35 + pilot_mag * 20.0).clamp(0.35, 1.0);
             let _ = self.rds_decoder.process_sample(x, rds_quality);
 
             let sum = self.sum_lp.process(x);