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Author SHA1 Message Date
sjg 72219956d9 [perf](trx-backend-soapysdr): trim wfm resampler taps 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 01:21:50 +01:00
sjg b2ce62646c [fix](trx-backend-soapysdr): improve wfm stereo blend threshold 
Raise the stereo blend floor from 0.55 to 0.75 at pilot lock and lower
the full-blend ceiling from stereo_detect_level 0.92 to 0.70.  This
gives real-world signals with moderate pilot strength much better L/R
separation (~17 dB immediately at lock vs ~5 dB before) and reaches
full unity blend sooner.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 01:20:38 +01:00
sjg 926a02e043 [perf](trx-backend-soapysdr): streamline wfm decode loop 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 01:19:47 +01:00
sjg b42e557a25 [perf](trx-backend-soapysdr): pack iq fir filtering 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 01:17:16 +01:00
sjg 198efa2092 [perf](trx-backend-soapysdr): update fir overlap in place 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 01:13:10 +01:00
sjg 7a6467320b [perf](trx-backend-soapysdr): reuse fir scratch buffers 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 01:10:34 +01:00
sjg ca0f236f4a [perf](trx-backend-soapysdr): reduce mixer and buffer overhead 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 01:07:19 +01:00
sjg bec3fc72d3 [fix](trx-backend-soapysdr): widen wfm stereo image 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 01:03:05 +01:00
sjg 6f37f9c66b [fix](trx-backend-soapysdr): refine wfm stereo tracking 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:58:20 +01:00
sjg e84a0599fa [feat](trx-backend-soapysdr): add avx2 wfm hot paths 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:52:53 +01:00
sjg 3e88c3f5d9 [feat](trx-backend-soapysdr): speed up fir and widen wfm resampler 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:50:04 +01:00
sjg 5411607b63 [fix](trx-backend-soapysdr): honor frontend wfm bandwidth 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:46:08 +01:00
sjg 17c70f89e5 [fix](trx-backend-soapysdr): fully reset wfm decoder on tune 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:41:28 +01:00
sjg fdcc732c83 [fix](trx-backend-soapysdr): retune wfm fir window 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:38:44 +01:00
sjg b0d8ce8e29 [fix](trx-backend-soapysdr): restore wfm agc and cutoffs 
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:35:19 +01:00
sjg a6847742d9 [fix](trx-backend-soapysdr): keep wfm discriminator state across blocks 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:31:41 +01:00
sjg a8ed9e8fa4 [fix](trx-backend-soapysdr): lower wfm internal rate ceiling 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:24:33 +01:00
sjg a25182ea3f [fix](trx-backend-soapysdr): drop wfm limiter and widen cutoffs 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:20:41 +01:00
sjg 3b277da243 [fix](trx-backend-soapysdr): make wfm limiter bass-insensitive 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:10:54 +01:00
sjg 206696acc5 [feat](trx-backend-soapysdr): add adaptive wfm stereo blend 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:07:13 +01:00
sjg 5060522541 [fix](trx-backend-soapysdr): add wfm limiter and restore cutoffs 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:02:19 +01:00
sjg b6f0a9967d [fix](trx-backend-soapysdr): improve wfm stereo separation trim 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-03-01 00:00:31 +01:00
sjg 32822effda [fix](trx-backend-soapysdr): retune wfm sum and diff cutoffs 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:55:17 +01:00
sjg 635d2b39bb [fix](trx-backend-soapysdr): add stereo diff high-pass and headroom 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:51:26 +01:00
sjg 420e98de31 [feat](trx-client,trx-frontend-http): add default rig and hideable rf gain 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:45:17 +01:00
sjg 9453c90dac [fix](trx-backend-soapysdr): retune wfm stereo difference path 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:41:07 +01:00
sjg 0dd91a952b [fix](trx-backend-soapysdr): add headroom to wfm stereo matrix 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:38:18 +01:00
sjg 6d466f44d2 [fix](trx-backend-soapysdr): narrow wfm stereo difference band 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:37:08 +01:00
sjg 9e49bfbcc8 [fix](trx-backend-soapysdr): latch full stereo blend after lock 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:34:43 +01:00
sjg 617255cd32 [feat](trx-rs): expose live sdr gain control 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:30:08 +01:00
sjg 93e507606e [feat](trx-server,trx-backend-soapysdr): add sdr gain ceiling 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:23:41 +01:00
sjg dbeec9fb39 [feat](trx-backend-soapysdr): use fir resampler for wfm audio 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:17:15 +01:00
sjg 96da7ca471 [style](trx-frontend-http): lower rds overlay badge 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:12:38 +01:00
sjg 5a6ff1427a [fix](trx-client,trx-backend-soapysdr): improve rig switching and fm agc 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 23:06:53 +01:00
sjg 8440fe164b [fix](trx-backend-soapysdr): reduce wfm audio cutoff 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 22:54:03 +01:00
sjg 735c9a7f07 [fix](trx-backend-soapysdr): bypass agc for wfm audio 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 22:38:54 +01:00
sjg 3ccda5fb5a [fix](trx-backend-soapysdr,trx-frontend-http): reset stereo state and soften wfm top end 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 22:34:54 +01:00
sjg 3a75b7ac5b [fix](trx-frontend-http): satisfy audio copyTo arguments 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 22:28:35 +01:00
sjg 85ad204974 [fix](trx-frontend-http): handle stereo audio frame layouts 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 22:26:56 +01:00
sjg f06dbc921a [fix](trx-frontend-http): reconfigure audio stream on rig change 
Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 22:23:03 +01:00
sjg b6053729a4 [fix](trx-backend-soapysdr): emit proper stereo pcm frames 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 22:07:34 +01:00
sjg df1bbf8f5b [fix](trx-rs): remove wfm denoise and default stereo audio 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 22:01:17 +01:00
sjg d6c89bcc6b [fix](trx-backend-soapysdr): tighten wfm pilot detect and stereo agc 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 21:51:36 +01:00
sjg b722787ada [feat](trx-rs): show live wfm stereo detect state 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 21:44:32 +01:00
sjg 862f0200bb [fix](trx-backend-soapysdr): tune wfm stereo separation trim 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 21:39:35 +01:00
sjg 73fe9d52ff [fix](trx-backend-soapysdr): improve wfm stereo separation 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 21:34:31 +01:00
sjg a456864957 [fix](trx-backend-soapysdr): restore wfm stereo separation 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 21:26:32 +01:00
sjg 1cc60c8a10 [style](trx-frontend-http): align wfm control button sizing 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 20:51:27 +01:00
sjg eb740dbb43 [fix](trx-backend-soapysdr): add missing wfm_denoise arg in dsp tests 
Fix pre-existing compilation failures in four test call sites that were
missing the wfm_denoise: bool argument added to ChannelDsp::new() and
SdrPipeline::start().

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 20:43:10 +01:00
sjg bbc7e857e5 [fix](trx-backend-soapysdr): improve WFM stereo demodulation quality 
- Raise audio LPF cutoff from 15 kHz to 17 kHz to pass full FM stereo
  audio bandwidth without excessive HF rolloff
- Replace 2-point linear interpolation resampler with 4-point Hermite
  cubic spline for a much flatter passband up to 17 kHz
- Add FM discriminator gain normalization (fm_gain = fs / 150000) so
  ±75 kHz deviation maps to ±1.0 regardless of composite sample rate,
  stabilizing stereo carrier amplitude reconstruction
- Double pilot PLL proportional (0.0015→0.003) and integral
  (0.00002→0.00005) gains for faster lock and better tracking

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 20:43:01 +01:00