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severly garbaled audio #131

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makerio90 opened this issue Mar 13, 2023 · 3 comments
Open

severly garbaled audio #131

makerio90 opened this issue Mar 13, 2023 · 3 comments

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@makerio90
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title. here is a link to the decoded audio.
im trying to decode a dmr stream near me. i believe its police radio.

logs:

$ socat udp-listen:7355 - | padsp dsd -xr -w out.wav -i - -o /dev/dsp
Digital Speech Decoder 1.7.0-dev (build:v1.6.0-96-g59423fa)
mbelib version 1.3.0
Expecting inverted DMR/MOTOTRBO signals.
Writing audio to file out.wav
Audio In Device: -
Sync:  -DMR       mod: GFSK inlvl: 39% [SLOT0]  slot1   VOICE e:============R=============E========R======R=======R====
Sync: (-DMR)      mod: GFSK inlvl: 39% [SLOT0]  slot1   VOICE e:===============R==========R==========R==========R=====R======
Sync:  -DMR       mod: C4FM inlvl: 38%  SLOT0  [SLOT1]  VOICE e:========================================R========E
Sync: (-DMR)      mod: GFSK inlvl: 38%  SLOT0  [SLOT1]  VOICE e:==========R=========R========================R=========E
Sync:  -DMR       mod: C4FM inlvl: 39% [SLOT0]  SLOT1   VOICE e:============E=====R==========R====E=========R===
Sync: (-DMR)      mod: GFSK inlvl: 36%  SLOT0  [SLOT1]  VOICE e:=========R=====R======R=====R=======R=====R=======R=====R=======R=======
Sync:  -DMR       mod: C4FM inlvl: 38% [SLOT0]  SLOT1   VOICE e:=====R=====R====R=====RM=====R====R=====R=====RM=====R==============R=====R=====
Sync: (-DMR)      mod: GFSK inlvl: 36%  SLOT0  [SLOT1]  VOICE e:=======R====R====R=======R====R=======R====R=======R====R=======R========R
Sync:  -DMR       mod: C4FM inlvl: 37% [SLOT0]  SLOT1   VOICE e:======R===========R=====R====R==============R====
Sync: (-DMR)      mod: GFSK inlvl: 35% [SLOT0]  SLOT1   VOICE e:============R============================
Sync:  -DMR       mod: C4FM inlvl: 35% [SLOT0]  SLOT1   VOICE e:===============================
Sync: (-DMR)      mod: GFSK inlvl: 34%  SLOT0  [SLOT1]  VOICE e:====E====T====R==========R===================R==============
Sync:  -DMR       mod: GFSK inlvl: 34%  SLOT0  [SLOT1]  VOICE e:==========R==========E====R====R====R======E====R=E====R=====R===
Sync: (-DMR)      mod: GFSK inlvl: 38%  SLOT0  [SLOT1]  VOICE e:====R===================R============R====E=======R
Sync:  -DMR       mod: GFSK inlvl: 40% [SLOT0]  SLOT1   VOICE e:=======R=====R======R=====R=======R========R====R=======R===
Sync: (-DMR)      mod: GFSK inlvl: 40% [SLOT0]  SLOT1   VOICE e:====R==========R===========R=======R==========R=======R====R=====
Sync:  -DMR       mod: C4FM inlvl: 38%  SLOT0  [SLOT1]  VOICE e:=========================R======R====R=======
Sync: (-DMR)      mod: GFSK inlvl: 35%  SLOT0  [SLOT1]  VOICE e:=======R=====R===============R======R=================R==
Sync:  -DMR       mod: C4FM inlvl: 34% [SLOT0]  SLOT1   VOICE e:=====R=======R=========R====R===========R==========R=E====R====R
Sync: (-DMR)      mod: GFSK inlvl: 34%  SLOT0  [SLOT1]  VOICE e:=========R=========R==========R=====================
Sync:  -DMR       mod: C4FM inlvl: 34% [SLOT0]  SLOT1   VOICE e:=========R=======R=========R==========R==E=======E
Sync: (-DMR)      mod: GFSK inlvl: 34%  SLOT0  [SLOT1]  VOICE e:============R====R====R========T=====R========T=====R====R==============
Sync:  -DMR       mod: C4FM inlvl: 33% [SLOT0]  SLOT1   VOICE e:===E==================R===========R============R
Sync: (-DMR)      mod: GFSK inlvl: 32%  SLOT0  [SLOT1]  VOICE e:=============R==========R====R=========R=======R========R=======R==
Sync:  -DMR       mod: C4FM inlvl: 35% [SLOT0]  SLOT1   VOICE e:=====R======E====R=======T============R======R=======R
Sync: (-DMR)      mod: C4FM inlvl: 34%  SLOT0  [SLOT1]  VOICE e:====R=====R========E===========R========E=====R====R====E====R====R=
Sync:  -DMR       mod: C4FM inlvl: 35% [SLOT0]  SLOT1   VOICE e:============================================
Sync: (-DMR)      mod: GFSK inlvl: 34%  SLOT0  [SLOT1]  VOICE e:=====R=======R=======R=======R=====R====R======R====R====R====RM====R
Sync:  -DMR       mod: C4FM inlvl: 36% [SLOT0]  SLOT1   VOICE e:====R=====R=======R=========R=======R====R=======R====R=====R====RM====R
Sync: (-DMR)      mod: C4FM inlvl: 33% [SLOT0]  SLOT1   VOICE e:=========R=======R=====R======R====================R=====R
Sync:  -DMR       mod: GFSK inlvl: 37% [SLOT0]  SLOT1   VOICE e:==========R=======R====R========R====R=======E=======R======
Sync: (-DMR)      mod: C4FM inlvl: 39% [SLOT0]  SLOT1   VOICE e:====E======R====R=====R====RM====R====R=====R=========R====R=======R======
Sync:  -DMR       mod: C4FM inlvl: 39%  SLOT0  [SLOT1]  VOICE e:====R==========R===E=====E======R====================R
Sync: (-DMR)      mod: C4FM inlvl: 36% [SLOT0]  SLOT1   VOICE e:====R=====R============R=================RE======E=====R===
Sync:  -DMR       mod: GFSK inlvl: 34% [SLOT0]  SLOT1   VOICE e:======R=====R========R=====R=====R==================
Sync: (-DMR)      mod: GFSK inlvl: 40%  SLOT0  [SLOT1]  VOICE e:=====R=====R====R=======R====R=======R====R=======R====R=======R====R=======R====R
Sync:  -DMR       mod: C4FM inlvl: 38%  SLOT0  [SLOT1]  VOICE e:=======R=======R=======R=======R======R=======R
Sync: (-DMR)      mod: C4FM inlvl: 34%  SLOT0  [SLOT1]  VOICE e:============E==========E==========R====R======R=========R=====T===
Sync:  -DMR       mod: C4FM inlvl: 36% [SLOT0]  SLOT1   VOICE e:====R====R=========R=========R==========R==========
Sync: (-DMR)      mod: C4FM inlvl: 35%  SLOT0  [SLOT1]  VOICE e:====R===========R============R======R====R====R=============
Sync:  -DMR       mod: C4FM inlvl: 36%  SLOT0  [SLOT1]  VOICE e:=======R====R=======R====R=======R======R===============R
Sync: (-DMR)      mod: C4FM inlvl: 35%  SLOT0  [SLOT1]  VOICE e:=====R=====R===========R====R====R====RM==========R======R====R===========
Sync:  -DMR       mod: C4FM inlvl: 37% [SLOT0]  SLOT1   VOICE e:===========R===========R===================R=======
Sync: (-DMR)      mod: GFSK inlvl: 35% [SLOT0]  SLOT1   VOICE e:====R==========R====R====R====RM====R=======R========R=========R======R
Sync:  -DMR       mod: C4FM inlvl: 36% [SLOT0]  SLOT1   VOICE e:=========R====R=====R========E==========R===========R
Sync: (-DMR)      mod: GFSK inlvl: 36%  SLOT0  [SLOT1]  VOICE e:=======R=======E===T=============E===T======R=======R==E=====R===E
Sync:  -DMR       mod: C4FM inlvl: 34% [SLOT0]  SLOT1   VOICE e:=====R=============E======E=====R==========R===
Sync: (-DMR)      mod: GFSK inlvl: 35%  SLOT0  [SLOT1]  VOICE e:======R=================R===========R====R====
Sync:  -DMR       mod: C4FM inlvl: 33% [SLOT0]  SLOT1   VOICE e:========E========R====R======E======R========R====E====R
Sync: (-DMR)      mod: GFSK inlvl: 34%  SLOT0  [SLOT1]  VOICE e:====E=======E======E====R=======E=========E========R=E=====
Sync:  -DMR       mod: GFSK inlvl: 34% [SLOT0]  SLOT1   VOICE e:=======R==============R====R============R====R======
Sync: (-DMR)      mod: C4FM inlvl: 38%  SLOT0  [SLOT1]  VOICE e:=====R=============R=============R==============
Sync:  -DMR       mod: C4FM inlvl: 39%  SLOT0  [SLOT1]  VOICE e:==============R========================R=====R==
Sync: (-DMR)      mod: GFSK inlvl: 35%  SLOT0  [SLOT1]  VOICE e:======R====R==========R====R====R=====RM====R====R==============R=========R=====R
Sync:  -DMR       mod: C4FM inlvl: 34% [SLOT0]  SLOT1   VOICE e:=======R====R=====R====RM====R=======R=================R====
Sync: (-DMR)      mod: GFSK inlvl: 34% [SLOT0]  SLOT1   VOICE e:====R====R========R=====R====R=================T====R======R=======R
Sync:  -DMR       mod: C4FM inlvl: 36% [SLOT0]  SLOT1   VOICE e:====R======R====R=======R====R=========R======E====R====R=====R=======R
Sync: (-DMR)      mod: GFSK inlvl: 36% [SLOT0]  SLOT1   VOICE e:=====R=====R====R=====RM====R=====R=====R==========R=E=======R=======R====R
Sync: no sync
Sync:  -DMR       mod: QPSK inlvl: 41% [SLOT0]  slot1   VOICE e:===E====R=======R========E========R====R=====R====R====R=======
cSync: (-DMR)      mod: C4FM inlvl: 55%  SLOT0  [slot1]  VOICE e:====T=========R=============R====================R==
Sync: no sync
cccc^C
Total audio errors: 3131
Total header errors: 0
Total irrecoverable header errors: 0

+P25 BER estimate: 0.00%
-P25 BER estimate: 0.00%

Exiting.

i can record the encoded stream if nessicary.
this was also happening on some dmr on the 70cm band, so i dont think its encryption.

@Stichoza
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Stichoza commented May 4, 2023

I'm having same problem in 70cm band. Have you found any solutions?

@makerio90
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none yet. have you had any success on other bands?

@makerio90
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dsd built into sdrangel has no succsess

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