Works great on Win7. And XP.. And 8.
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Boatanchor
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DMRdecode compared to DSDPlus?
Has anyone done any direct comparisons between the decode performance of DMRdecode and DSDPlus?
Just curious since I had some weak signal (Interstate) DMR coming in via tropo ducting the other day and DSDPlus was struggling a little with signal levels 10-15dB above the noise floor.
Has anyone done any direct comparisons between the decode performance of DMRdecode and DSDPlus?
Just curious since I had some weak signal (Interstate) DMR coming in via tropo ducting the other day and DSDPlus was struggling a little with signal levels 10-15dB above the noise floor.
Compare decode performance between DMRDecode and DSD+? Two different beasts. But DSD+ will decode when you aren't seeing anything useful in DMRDecode due to the filtering [which Ian acknowledges, I think].
And, I'd recommend [although you probably don't want to listen] that you actually record a bunch of weak signal TRBO raw audio and then run it through the advanced tuning process [eased by dsdtune if you prefer]. If you run weak signal DMR through that process, you will see an astounding improvement in that weak signal decode. And then you can just run your DSD+ using those tuning values all the time and you'll get the best performance you can on DMR all the time, strong or weak sig.
of course, I'm not suggesting that DSD+ performs miracles and can perfectly decode all weak signals simply by going through the advanced tuning process. But I am emphatically stating that you [anyone] can significantly improve weak signal DMR decodes in DSD+ if you run through the tuning.
Mike
Which version of Java you using? I try on three different machines with win7 32 and 64 bit and alway got the same message that some calasses are missing and it won't work.
Boatanchor
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Thanks for the info Mike.
I'm always willing to listen & learn
I'm always willing to listen & learn
IanWraith
Member
Hi Folks
Several things going on here ..
1) DMRDecode checks all the error correction sections in a PDU. If there is even a one bit error then the PDU is rejected. I would like to add error correction but shortage of time prevents this.
2) DMRDecode has the overhead of a GUI and being written in Java so as a trade off it has less poles in the filter.
3) The symbol timing/frame acquisition code in DMRDecode comes from the original DSD and isn't exactly ideal. I would like to look at the DSDPlus source code to see how that does it but I can't as that isn't open source.
Regards
Ian
Several things going on here ..
1) DMRDecode checks all the error correction sections in a PDU. If there is even a one bit error then the PDU is rejected. I would like to add error correction but shortage of time prevents this.
2) DMRDecode has the overhead of a GUI and being written in Java so as a trade off it has less poles in the filter.
3) The symbol timing/frame acquisition code in DMRDecode comes from the original DSD and isn't exactly ideal. I would like to look at the DSDPlus source code to see how that does it but I can't as that isn't open source.
Regards
Ian
Boatanchor
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Thanks for the clarification Ian.
jfr
Member
Ian, could you tell me what the heading labels are for the .csv file that your program creates? I have the obvious ones nailed down, but I want to make sure I'm dead accurate for CC, group, and TS, etc.
Thanks in advance for a greatly helpful program!
-JR
Thanks in advance for a greatly helpful program!
-JR
Last edited:
Version 7 is required.
I have Java 7 update 45.
Two different computers, the same Error.
Why??
Any help??
br0adband
Member
Perhaps the .jar file you downloaded is corrupt in some respect, I'd delete the one(s) you have now and then start with a freshly downloaded one from Ian's site. If you require a valid checksum so you can verify it's not corrupt, here are MD5 and SHA1 checksums from the version I use (v73)
File name: dmrdecode_b73.jar
MD5: 3f9737a5ca6216866cbfea3a205cb050
SHA-1: 1d34b31e5c006802c0ac582584d3b6dc745b38f0
File size: 167,746 bytes
Might help, might not, but it's worth a shot. A great addon for Windows to do hash checking/verification can be found here:
http://code.kliu.org/hashcheck/
File name: dmrdecode_b73.jar
MD5: 3f9737a5ca6216866cbfea3a205cb050
SHA-1: 1d34b31e5c006802c0ac582584d3b6dc745b38f0
File size: 167,746 bytes
Might help, might not, but it's worth a shot. A great addon for Windows to do hash checking/verification can be found here:
http://code.kliu.org/hashcheck/
I have version 72 and 73 both works under windows xp and both give the same error under widows 7.
Maybe java 7 45 is a problem. Tommorow i try to download other java version.
It's not working for me. So far i've tried three machines with windows and always the same error. When i use windows xp with the same java version it works ok.
So what is going on??
Maybe the language version of windows is a problem (i have that situation before. Soft running on english version didn't work on other language version)
IanWraith
Member
Hello
Any Java 7 will work. When you look at DMRDecode do you see a single file or a folder ?
Regards
Ian
Any Java 7 will work. When you look at DMRDecode do you see a single file or a folder ?
Regards
Ian
IanWraith
Member
jfr
Member
Thanks, Ian!
-JR
-JR
I see jar file.
Problem solved.
I've reinstalled Java on all computers. Now it is 7u51 version and everything seems to work ok.
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