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Voice/Control Channel Decoding Software -
For discussion of software applications which decode digital voice formats and trunking control channels. Please use the HF Digital Signals forum for anything below 30MHz.
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04-29-2014, 11:42 PM
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Join Date: Apr 2014
Location: Laguna Beach, CA
Posts: 23
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Quote:
Originally Posted by w4rtt
Audio device #2 is used for a live scanner feed.
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This is probably your problem. If you have the audio feed from the scanner coming in on Device #2, then you need to select it in DSD. It looks like you are currently using Device #1 as your input into DSD
see how DSD says " audio device #1 input AU-1EX initialized" ? your input needs to be set to device #2
run this command instead:
DSD -i2 -fa
this means DSD use input #2 and decode all protocols |
04-30-2014, 5:38 AM
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Quote:
Originally Posted by lagunacomputer
This is probably your problem. If you have the audio feed from the scanner coming in on Device #2, then you need to select it in DSD. It looks like you are currently using Device #1 as your input into DSD
see how DSD says " audio device #1 input AU-1EX initialized" ? your input needs to be set to device #2
run this command instead:
DSD -i2 -fa
this means DSD use input #2 and decode all protocols
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Device #2 is exclusively for the live scanner input, not the feed into DSD. Device #1 is used successfully for all my other decoding and recording uses.
__________________
Randy
W4RTT
Last edited by w4rtt; 04-30-2014 at 5:40 AM..
Reason: left something out
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04-30-2014, 6:02 AM
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I tried the same set up with DSDDecode with the same results. Must be something hinky with the Ederol sound card.
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Randy
W4RTT
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04-30-2014, 6:37 AM
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Shack photos
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Join Date: Aug 2005
Location: Rowan County,KY (Morehead)
Posts: 2,143
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Try 16 bit 4800 DVD quality for sound input.
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PSR-800 - BCT15X - FreeSCAN - NooElect R820T2+ SDR - NooElect R820T2 SDR - DSDPlus Fast Lane
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04-30-2014, 7:18 AM
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Quote:
Originally Posted by RonnieUSA
Try 16 bit 4800 DVD quality for sound input.
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I don't see anywhere to set these preferences in XP.
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Randy
W4RTT
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04-30-2014, 7:28 AM
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Member
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Shack photos
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Join Date: Aug 2005
Location: Rowan County,KY (Morehead)
Posts: 2,143
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Quote:
Originally Posted by w4rtt
I don't see anywhere to set these preferences in XP.
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Right click on the speaker icon in the task bar and choose recording, and then the advanced tab, then You should see what the recording is set to, just make sure You change it to 4800.
__________________
PSR-800 - BCT15X - FreeSCAN - NooElect R820T2+ SDR - NooElect R820T2 SDR - DSDPlus Fast Lane
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04-30-2014, 7:37 AM
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Quote:
Originally Posted by RonnieUSA
Right click on the speaker icon in the task bar and choose recording, and then the advanced tab, then You should see what the recording is set to, just make sure You change it to 4800.
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The Advanced tab is greyed and not selectable.
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Randy
W4RTT
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04-30-2014, 8:07 AM
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Join Date: Aug 2005
Location: Rowan County,KY (Morehead)
Posts: 2,143
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You are going from the Radio to the line-in input of the USB Sound Card Correct?
Do You have your speakers plugged into the same usb sound card, if not your not gonna hear anything.
__________________
PSR-800 - BCT15X - FreeSCAN - NooElect R820T2+ SDR - NooElect R820T2 SDR - DSDPlus Fast Lane
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04-30-2014, 7:24 PM
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Quote:
Originally Posted by RonnieUSA
You are going from the Radio to the line-in input of the USB Sound Card Correct?
Correct.
Do You have your speakers plugged into the same usb sound card, if not your not gonna hear anything.
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Yes. This is the same decoding setup that I have been using for years with other applications.
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Randy
W4RTT
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04-30-2014, 7:45 PM
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Join Date: Apr 2014
Location: Laguna Beach, CA
Posts: 23
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sounds like you are pretty knowledgeable, is it possible that the signal you have tuned to is not really P25 Phase I?
also, are you using the latest version of DSD+?
It may be worthwhile for you to get a $10 dongle, make sure it works, then hook up to the scanner instead
otherwise, i'm afraid i'm out of suggestions myself....
lastly, " This program requires lame_enc.dl" . do you have the lame encoder file in your DSD folder?
Last edited by lagunacomputer; 04-30-2014 at 8:11 PM..
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04-30-2014, 9:40 PM
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Join Date: Jun 2004
Posts: 39
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Re: No decoded audio with DSD+
Fwiw I gave up on trying to get my 8500 to play nice with DSD+ decoding . Switched to a dongle instead with good results
Sent from my HTC6525LVW using Tapatalk 2
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05-01-2014, 9:52 AM
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OK, DSDPlus doesn't like the Ederol sound card. Switched machines, one with an old Soundblaster card and things are working OK.
__________________
Randy
W4RTT
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05-01-2014, 11:13 AM
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Member
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Amateur Radio
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Join Date: Jul 2003
Location: Ottawa, Canada
Posts: 264
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audio to .wav file
It looks like you are sending the decoded audio to a wave file instead of to your sound output.
"appending synthesized audio to file 'DSDplus.wav'
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05-01-2014, 5:46 PM
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Quote:
Originally Posted by mmisk
It looks like you are sending the decoded audio to a wave file instead of to your sound output.
"appending synthesized audio to file 'DSDplus.wav'
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I believe it does this automatically. I am getting decodes now with this showing.
__________________
Randy
W4RTT
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05-02-2014, 9:37 AM
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Member
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Amateur Radio
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Join Date: Jul 2003
Location: Ottawa, Canada
Posts: 264
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DSDPlus doesn't like the Ederol sound card
That is so interesting about your sound card. I forgot that years ago I had the same problem. DSD would not decode very well on my main computer, but worked well on any other computer I tried. I changed the sound card to an old sound blaster, and problem solved. I also added a second sound card so that I could listen to signals I found using an SDR dongle, and also decode signals at the same time by sending the output of DSD to card 2.
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05-02-2014, 9:56 AM
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Quote:
Originally Posted by mmisk
That is so interesting about your sound card. I forgot that years ago I had the same problem. DSD would not decode very well on my main computer, but worked well on any other computer I tried. I changed the sound card to an old sound blaster, and problem solved. I also added a second sound card so that I could listen to signals I found using an SDR dongle, and also decode signals at the same time by sending the output of DSD to card 2.
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I have had really good results with DSD and the Griffin iMic USB sound dongles. |
05-07-2014, 8:50 AM
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I listen to KSICS trunked P25P1 with NooElec 820T's using Unitrunker (Latest version), DSD+ (Only one version) & I'm having excellent results. I also use the free VB audio to pipe the signals around. Don't even need SDR# anymore - which makes everything SO MUCH EASIER
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