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Author SHA1 Message Date
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
sjg 3d8fd32488 [fix](trx-backend-soapysdr): prevent double agc on mono wfm 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 20:30:12 +01:00
sjg 244f91d97b [fix](trx-backend-soapysdr,trx-frontend-http): make wfm mono mode real 
Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 20:25:04 +01:00
sjg b7c1da138b [fix](trx-backend-soapysdr): fix WFM stereo separation 
The 19 kHz pilot notch was applied only to the L+R sum path, introducing
~22° of phase shift at 15 kHz relative to the L-R diff path.  This phase
mismatch caused interchannel crosstalk (≈ −14 dB separation at 15 kHz).

Fix: remove the notch from the sum processing chain so both sum and diff
pass through identical 4th-order Butterworth LPFs, giving phase-coherent
demodulation across the full audio band.  The notch is relocated to the
mono output branch where phase alignment with the diff channel is not
required.  Pilot rejection on the stereo L/R outputs is still adequate
(~28 dB) from the combined LPF + deemphasis response at 19 kHz.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
 2026-02-28 20:11:15 +01:00