DSD 1.4 and mbelib 1.2.3 released

[DaveNF2G]

Go to your other post, click on the Report button (the exclamation point within a red and white triangle) in the upper right corner, and put your request for deletion in the comment box.

 

[AmpedForay]

Thanks David, Done deal.

 

[jcardani]

Code question to invert NXDN48 voice in DSD 1.4.X Linux version

Hi All,

I normally use my ICOM radio discriminator for input to the soundcard but today I decided to try my PSR-800 and found that its discriminator yielded a better error rate with DMR voice and also with the DMRdecode Java program. However the PSR-800's discriminator is inverted vs. the ICOM. I used the -xr switch for DMR.

However there is no invert switch in DSD for NXDN. Where in the code would be the best place to invert the data so I can build my own invert switch. There's many places to do this but where would be the best (symbol, sample, dibit?) Can I do a simple value = ~value somewhere to invert? But it's probably more complicated.

thanks

 

[slicerwizard]

However there is no invert switch in DSD for NXDN.

Because one isn't needed?

Where in the code would be the best place to invert the data so I can build my own invert switch. There's many places to do this but where would be the best (symbol, sample, dibit?)

Right here:

 result = read (opts->audio_in_fd, &sample, 2);

 sample = -sample; // invert (don't ask...)

Can I do a simple value = ~value somewhere to invert?

Well, bitwise inversion wouldn't be my first choice...

 

[jcardani]

Hi Andy,

I actually used result = ~result and now the PSR800 is working with DSD for NXDN48! Thanks for the correct location! Audio is much better using the PSR800 discriminator vs. ICOM R-7000 or 8500.

So it was:
result = read (opts->audio_in_fd, &sample, 2);
result = -result; // invert


Joe

 

[hatzolahCW]

nxdn trunking

Is their any software to decode NXDN trunking system with encryption?

 

[jasonhouk]

Is their any software to decode NXDN trunking system with encryption?

Nope

 

[Forts]

Is their any software to decode NXDN trunking system with encryption?

Really.....? I suspect you already know the answer to this.

 

[sbarnes]

hi there is there anyway to decode Tetra?

 

[woodpecker]

hi there is there anyway to decode Tetra?

Let me google that for you