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Digital Voice Decoding Software For discussion of software applications which decode digital voice formats such as P25, NXDN, MotoTRBO, etc. Please use the HF Digital Signals forum for anything below 30MHz.

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  #21 (permalink)  
Old 04-29-2014, 11:42 PM
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Quote:
Originally Posted by w4rtt View Post
Audio device #2 is used for a live scanner feed.
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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Old 04-30-2014, 5:38 AM
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Quote:
Originally Posted by lagunacomputer View Post
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
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.
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Last edited by w4rtt; 04-30-2014 at 5:40 AM.. Reason: left something out
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Old 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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Old 04-30-2014, 6:37 AM
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Try 16 bit 4800 DVD quality for sound input.
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Old 04-30-2014, 7:18 AM
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Originally Posted by RonnieUSA View Post
Try 16 bit 4800 DVD quality for sound input.
I don't see anywhere to set these preferences in XP.
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Old 04-30-2014, 7:28 AM
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I don't see anywhere to set these preferences in XP.
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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Old 04-30-2014, 7:37 AM
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Quote:
Originally Posted by RonnieUSA View Post
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.
The Advanced tab is greyed and not selectable.
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Old 04-30-2014, 8:07 AM
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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.
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Old 04-30-2014, 7:24 PM
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Quote:
Originally Posted by RonnieUSA View Post
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.
Yes. This is the same decoding setup that I have been using for years with other applications.
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Old 04-30-2014, 7:45 PM
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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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Old 04-30-2014, 9:40 PM
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Default 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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Old 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.
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Old 05-01-2014, 11:13 AM
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Default 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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Old 05-01-2014, 5:46 PM
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Quote:
Originally Posted by mmisk View Post
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'
I believe it does this automatically. I am getting decodes now with this showing.
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Old 05-02-2014, 9:37 AM
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Default 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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Old 05-02-2014, 9:56 AM
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Quote:
Originally Posted by mmisk View Post
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.
I have had really good results with DSD and the Griffin iMic USB sound dongles.
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Old 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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