BM82557
Member
Deleted
DSDPlus SICK of Broken Audio!!!!
- Thread starter air-scan
- Start date
- Status
VLC? Trying to open the DSDPlus generated raw audio wav into DSDPlus.
okay here we go i used mediafire trial account
I play it back myself and it sounds better but its choppy when I run it live. I ain't about to do hours of recording just to listen. shouldn't have to with this decoder. Something up with the TCP stream.
1R-DSDPlus-Raw-Input_2020-08-26@081332
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I play it back myself and it sounds better but its choppy when I run it live. I ain't about to do hours of recording just to listen. shouldn't have to with this decoder. Something up with the TCP stream.
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sometimes I wonder if this message in the voice decoder part causes it
: 0000 (0) AlgID: 80 - CLEAR
I see it every time the audio stutters happen
The clear decodes are the ones not marked (TDMA). I have it set to tag TDMA if its TDMA
It might be also that DSD FL is having a hard time keeping up with the P1/P2 TDMA constant switching randomly. I go to a pure P25 P1 system no issues!
I wonder if my local peers who also monitor this same system caught onto the fact it's operating in both modes.
: 0000 (0) AlgID: 80 - CLEAR
I see it every time the audio stutters happen
The clear decodes are the ones not marked (TDMA). I have it set to tag TDMA if its TDMA
It might be also that DSD FL is having a hard time keeping up with the P1/P2 TDMA constant switching randomly. I go to a pure P25 P1 system no issues!
Oklahoma City Metro Public Safety Trunking System, Oklahoma City, Oklahoma
Oklahoma City Metro Public Safety Trunking System Profile
www.radioreference.com
I wonder if my local peers who also monitor this same system caught onto the fact it's operating in both modes.
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wgbecks
Active Member
I took a look at your video post while running DSD+ FL and it appears to me that your LNA gain is too high. It's been my experience that excessive RF Gain (LNA) can and often do result in decoding errors producing the stuttery audio, I have found that gain settings that produce approximately 20-25 dB of signal to noise (baseline) ratios work best and produce the least number of bit errors and crc failures.
I also noticed in your spectrum graph that there was a spike in the IF passband that might be local impulse interference or possibley real RFI
from an source outside of your listening envrionment. Computer monitors, switching power supplies, you name it all cause tremendous levels of RFI these days. You may need an antenna away from your home electronics.
However, I don't think RFI or impulse noise is your main issue so much as the LNA or RF Gain appears to be excessive.
Bill
I also noticed in your spectrum graph that there was a spike in the IF passband that might be local impulse interference or possibley real RFI
from an source outside of your listening envrionment. Computer monitors, switching power supplies, you name it all cause tremendous levels of RFI these days. You may need an antenna away from your home electronics.
However, I don't think RFI or impulse noise is your main issue so much as the LNA or RF Gain appears to be excessive.
Bill
A possibility but its not happening in SDR Trunk. I am beginning to think it's the way DSD FL handles the P2 TDMA audio. I get clear decodes other than P2 TDMA. I might go with 25 ft of coax to get the antenna to the window sill. It needs to be really flexible and not stiff.
Dozens of these messages will be streaming by in the HDU/LDU packets for each transmission, whether it's phase 1 or phase 2, so I don't see that being an issue. I didn't really get any stutters from your saved file either.... very odd.
When i played it back with dsdplus.exe ? <wav file>. i also saw it was better. Weird issue. I guess I am going to be content with SDR Trunk as its so much better with TDMA
Ill keep DSD FL for the DMR stuff and use SDR Trunk for the P2 TDMA stuff
The RR lists the system as as APCO25 Phase II, but doesn't specify the vendor. Do you know (or anyone) if it's a Harris or Motorola system?
sometimes I wonder if this message in the voice decoder part causes it
: 0000 (0) AlgID: 80 - CLEAR
I see it every time the audio stutters happen
The clear decodes are the ones not marked (TDMA). I have it set to tag TDMA if its TDMA
It might be also that DSD FL is having a hard time keeping up with the P1/P2 TDMA constant switching randomly. I go to a pure P25 P1 system no issues!
Oklahoma City Metro Public Safety Trunking System, Oklahoma City, Oklahoma
Oklahoma City Metro Public Safety Trunking System Profilewww.radioreference.com
I wonder if my local peers who also monitor this same system caught onto the fact it's operating in both modes.
Harris...it replaced an EDACS system. The overwhelming majority of Motorola ASTRO 25 systems use the BEE00 WACN, making them pretty easy to spot.
wgbecks
Active Member
Just try reducing the LNA gain of yor FMPx device. SDRT handles the SDR's differently, and in most cases the default settings produce excellent results.
It did not help at all changing lna gain level. Something isn't right in the software.
As for all you others who replied don't let your fandom get in the way of a legitimate bug. This is windows software one bug only affects some systems. It seems no one wants things to be fixed. maybe afraid itll break for them in which maybe won't. Stubborn bullheadedness always ends up the fail party. I was hopinig the DSD FL team would be reading this forum thread and reconsider. They must.
Oh brother...just use SDRTrunk if that works for you, and move on with life. No one here can fix the issue, regardless of whether it's your PC at fault or a DSD+ bug, so what are you harping on about?
wgbecks
Active Member
EXACTLY!!!
Well found the issue using Latencymon from Resplendence.
wdf01000.sys high latency. 3162ms on power saving
disabled PCI link management power saving
disable cpu throttling
wdf01000.sys latency dropped to about 562ms
I searched google for wdf01000.ys latency and it was inundated with a high score of search results
It's a common issue in windows 10. Microsoft
It's after all not DSD FL. It's the Windows 10 system
I am frustrated
wdf01000.sys high latency. 3162ms on power saving
disabled PCI link management power saving
disable cpu throttling
wdf01000.sys latency dropped to about 562ms
I searched google for wdf01000.ys latency and it was inundated with a high score of search results
It's a common issue in windows 10. Microsoft
It's after all not DSD FL. It's the Windows 10 system
I am frustrated
ScanMan3000
Newbie
- Joined
- Feb 11, 2018
- Messages
- 4
So, it's not DSD's fault then? Sounds like someone is owed an apology. Glad you got it figured out though.
Seem like a localized driver issue for your computer, not related to the dsd suite. I'm running Windows 10 in a 2 SDR basic config and do not have the stutter issue, although all power saving is disabled. The machine runs 24/7 and is used almost exclusively for monitoring. All junk programs / bloatware / unverified utilities have been banished.
Dell Optiplex 3070 Micro
i5-9500T 2.2GHz
8GB
2x Nooelec TCXO SDRs
Total CPU loading ~20%
DSD+ FL loading ~5%
Monitoring a (well engineered) Moto TDMA system, from roughly 1km to the nearest tower site in a 6 site cell, 5/8 wire antenna.
Contents of bat file:
@Echo off
start DSDPlus -rc -i20001 -v1 -wsl400.2 -wss100.200 -wel0.1 -wcl0.445 -wes400.520 -E -O NUL >>CC.log
timeout 8
start DSDPlus -rv -Pwav -i20002 -v3 -wsl400.210 -wss100.200 -wel172.522 -wcl528.0 >>VC.log
timeout 8
start FMP24 -rc -i1 -o20001 -g25.4 -P-0.4 -f773.83125
timeout 8
start FMP24 -rv -i2 -o20002 -g25.4 -P-0.4
Dell Optiplex 3070 Micro
i5-9500T 2.2GHz
8GB
2x Nooelec TCXO SDRs
Total CPU loading ~20%
DSD+ FL loading ~5%
Monitoring a (well engineered) Moto TDMA system, from roughly 1km to the nearest tower site in a 6 site cell, 5/8 wire antenna.
Contents of bat file:
@Echo off
start DSDPlus -rc -i20001 -v1 -wsl400.2 -wss100.200 -wel0.1 -wcl0.445 -wes400.520 -E -O NUL >>CC.log
timeout 8
start DSDPlus -rv -Pwav -i20002 -v3 -wsl400.210 -wss100.200 -wel172.522 -wcl528.0 >>VC.log
timeout 8
start FMP24 -rc -i1 -o20001 -g25.4 -P-0.4 -f773.83125
timeout 8
start FMP24 -rv -i2 -o20002 -g25.4 -P-0.4
CanesFan95
Analog already is interoperable.
I've also always had broken audio on P25. Wasn't there an old rumor it's a problem with Harris systems?
I monitor a Harris system without issue. Mind you it's neither simulcast or phase 2.
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