dsd-neo audio #152

Hello Arancormonk, I don't know how good it is that I opened a new issue, but I haven't found the problem with SNR, in fact the problem is that there are still times when the first call comes in with a broken sound, the right ones less often, please when you can take a look at the code, otherwise for me it's super ok

To debug this properly I need an IQ capture from a run where the first call has broken audio. Without the raw IQ, I can only guess whether this is RF/SNR, sync timing, demod state, or audio output.

Please run the same command/settings you normally use, but add IQ capture, for example:

dsd-neo <your usual options> --iq-capture broken-first-call.iq --iq-capture-max-mb 512 2> broken-first-call.log

Start the capture before traffic begins, let it catch the broken first call and ideally one normal call afterward, then stop dsd-neo cleanly. Please link zip/7z/rar/whatever:

• broken-first-call.iq
• broken-first-call.iq.json
• broken-first-call.log
• the exact command line/config used

https://we.tl/t-2Hq4nyBUyucb2pHF

Hello Arancormonk, I made new recordings, I had no activity on certain channels so I did it with my own DMR station, without encryption, but it still does the same thing, from what I've noticed either at the beginning of a call, or when I come in with one call after the other. Thanks !!!

Arancormonk, I have now tested with multiple audio inputs, TCP, Pulse Audio and it behaves the same.

hello arancormonk, I installed the latest version and I have these messages as if they were calls but they are not calls, do you have any idea?
IMG_20260612_153923

Hello Arancormonk, yes I noticed that the problem was that I had the Motorola station too close to the RTL, but I did tests and the loss of audio voice is much rarer than before at the beginning of the call, but only with RTL input, with pulse audio or TCP is it ok, I noticed some decoding of TGT 0 and SRC 0 without there being any call?

https://we.tl/t-aTTfoTJVRWau7o0o

Hello Arancormonk, I made a new registration, I left the gain lower, the audio errors are somewhere in the middle

hello arancormonk, I don't know about dsd-fme because I don't have anywhere to run it, I don't have linux anymore, but with dsd-neo the problem is only with the RTL2832U input, when I use pulseaudio or tcp from sdrsharp as input I don't have any kind of error anymore

Hello Arancormonk, I noticed that in the new code with the -fr function there is no longer MONO, when I activated this function instead of -fs, the audio errors were almost 0 for me, do you know what the MONO function is like now?

Thank you very much!!!!!

arancormonk, where could I set colors for the terminal? Calls should be green, ARS should be yellow, and LRRP should be cyan, before I was able to do it with this function : state->event_history_s[slot].Event_History_Items[0].color_pair = 3;

Honestly, I have no complaints—the program is superb. However, these "RX OK" messages used to appear in the terminal; I believe they were related to the request-response process. Thank you very much
IMG_20260725_064939

Hi arancormonk, honestly, the program runs perfectly for me, but I’ve noticed that LRRP messages appear twice, and when a call comes in, they appear three times—is that normal? Otherwise, it’s great

Hello arancormonk, the calls are still repeated, you can see the date and time of the call by the time, I have attached a photo.
IMG_20260728_131911

but, arancormonk, what is your opinion of SNR ????

enum { SNR_METER_BARS = 8, SNR_METER_WIDTH = (SNR_METER_BARS * 2) - 1 };

#if defined(DSD_USE_PDCURSES) && defined(DSD_HAS_PDCURSES_WIDE_API)
static const wchar_t snr_block_glyphs[SNR_METER_BARS][2] = {
{(wchar_t)0x2581, 0}, {(wchar_t)0x2582, 0}, {(wchar_t)0x2583, 0}, {(wchar_t)0x2584, 0},
{(wchar_t)0x2585, 0}, {(wchar_t)0x2586, 0}, {(wchar_t)0x2587, 0}, {(wchar_t)0x2588, 0},
};
#else
static const char* const snr_block_glyphs[SNR_METER_BARS] = {"▁", "▂", "▃", "▄", "▅", "▆", "▇", "█"};
#endif

static int
snr_meter_bar_count(double snr_db)
{
if (!isfinite(snr_db) || snr_db <= -50.0)
return 0;

if (snr_db < 2.0) return 1;
if (snr_db < 3.0) return 2;
if (snr_db < 4.0) return 3;
if (snr_db < 5.0) return 4;
if (snr_db < 6.0) return 5;
if (snr_db < 7.0) return 6;
if (snr_db < 8.0) return 7;
return 8;

}
Here I made the change, in case anyone still wants to have 8 lines at SNR and have the SNR be more "active"

Hello Arancormonk, I saw a new decoding: dmr: detect and decode standalone Reverse Channel bursts, but wouldn't you like to make messages like; Cease Transmission Request; or whatever messages may be being decoded appear in the Ncurses Terminal? Thank you very much, and if you can with a yellow color. I love decoding messages in the terminal. Thanks Arancormonk

Superb, thank you very much Arancormonk

Hello Arancormonk, thank you again, for me dsd-neo works very well, will you be able to add more realistic tones for DSD-NEO, for example what are the Motorola tones like? Or Dual Tone? I tried with GPT but I only got some terrible noises, anyway thank you again

Hello Arancormonk, I wanted to test other communication modes, namely NXDN, but it seems to me that there are problems with decoding?

Hello Arancormonk, I think the NXDN decoding was actually my problem, I saw your new update and I said that I would connect with sdr++ to the spy server to find a tier 3 or con+ system and test it with dsd-neo, but I didn't succeed, but please explain to me if I find a Tier 3 or Con+ system, how can I call it DSD-Neo? I found a control channel but it didn't find the frequencies even with T active, or does the new update find the frequencies itself? Thanks

Hello arancormonk, I recently had the opportunity to listen to a digital communication, I think c4fm, or at least that's how it appeared to me in dsdplus, and when the audio call appeared, it had a very clear hearing compared to DMR. Do you think that in the future you will be able to work on the audio on DMR to be heard as clearly as possible or is it all about modulation? Or maybe it's these settings and I don't know, and please when you can add the tones as realistic as possible of a real station. Thank you.