P25RX Firmware Updates / Testing

[Vermonster]

@btt ,
I think you are correct you can't fix the way certain players calculate length when the file is encoded using VBR. Since the software offers a fixed bitrate option (at least I think that is what "High" does), it should solve that issue if it's important to people. I confirmed this morning that DSD+ MP3 recordings also have this quirk.

Since I don't experience the weird pitch @turnpike61 is seeing, I can't know for sure. But if I had to guess, it's due to sample rate mismatch. How does this get caused...possible an interaction between the BT software and a computer's sample rate settings? Google "sample rate mismatch audio encoder" and go down a rabbit hole.

 

[btt]

I am on the most current version (1/9). This and the last two before it give me choppy or motorboating audio at times I did not have this on the earlier versions. Receiver is in the same location as before. Some transmissions are perfect, others have choppy audio.

Are you listening via PC speakers with BTConfig or the line-out/Bluetooth? If it is via PC speakers, can you let me know what the last version that worked well was?

 

[turnpike61]

@turnpike61 ,
Have you tried recording in MP3 high quality. This looks to produce a file that is a fixed 64kb/s rather than VBR.
For me this seems to have fixed the weirdness I was seeing around track length.
I would start recording in a fresh folder; I'm not quite sure what happens if you change recording to "high" when there is an existing file for the same day in the same folder that was created with a VBR.
Not a complete solution, but better than listening to Alvin and the Chipmunks.

I've tried High Quality and VBR. Both the same.

 

[beischel]

Are you listening via PC speakers with BTConfig or the line-out/Bluetooth? If it is via PC speakers, can you let me know what the last version that worked well was?

I am using Bluetooth to a Echo speaker. The best audio ever was in version BTConfig-2021-08-31_1618, but there were versions after that one that seemed to do just as well. Now the last version before I started having the audio issues. That is going to tax me a bit, but I think it was around 12/18 or 12/21 right after you fixed the encryption issue.

 

[btt]

I am using Bluetooth to a Echo speaker. The best audio ever was in version BTConfig-2021-08-31_1618, but there were versions after that one that seemed to do just as well. Now the last version before I started having the audio issues. That is going to tax me a bit, but I think it was around 12/18 or 12/21 right after you fixed the encryption issue.

In the latest version available, the audio related code has been reverted to be the same as it was in version 08-31_1618. Hopefully that will help. There are some big changes to the demodulation code that has been ported over from the P25RX-II. If you are monitoring a simulcast system (LSM), then select the LSM mode on the P25RX Configuration tab.

 

[beischel]

Just loaded the 1/31 version and the audio is worse than ever. Bad break-ups and motor-boating on the audio with signal levels fully green.

 

[btt]

Just loaded the 1/31 version and the audio is worse than ever. Bad break-ups and motor-boating on the audio with signal levels fully green.

Yes, the changes were great for the EVM, but not good for the audio. Should be fixed in 01-31_0648. I assume you were running the earlier one?

 

[beischel]

Yes, the changes were great for the EVM, but not good for the audio. Should be fixed in 01-31_0648. I assume you were running the earlier one?

I am currently running 0648. When signal strength is very good, the audio is breaking up or motorboating almost all the time. This is the worst audio I ever experienced since I received my unit earlier this year. A few transmissions come through perfectly, most are bad. I am going to play with the AGC value to see what that might change to help this.

 

[Mike_G_D]

FWIW, with this version, 0648, I am getting great audio. LSM mixed P1/P2 system. Some of the best audio I have ever experienced so far.

 

[btt]

I am currently running 0648. When signal strength is very good, the audio is breaking up or motorboating almost all the time. This is the worst audio I ever experienced since I received my unit earlier this year. A few transmissions come through perfectly, most are bad. I am going to play with the AGC value to see what that might change to help this.

I will have another release shortly to fix the zip code / test frequencies. That is not working correctly in 01-31_0648. What demodulation mode are you using? Have you tried both of the modes? Also, have you tried doing a "Reset To Defaults" on the advanced tab?

 

[beischel]

I will have another release shortly to fix the zip code / test frequencies. That is not working correctly in 01-31_0648. What demodulation mode are you using? Have you tried both of the modes? Also, have you tried doing a "Reset To Defaults" on the advanced tab?

I have tried both modulation modes and LSM works the best. This is the Ohio MARCS system. There is not "Reset to Defaults" on the Advanced Tab that I could see. Though I think with one exception, I am using the defaults. The only exception being switch control channel after "2" seconds of inactivity.

 

[btt]

I have tried both modulation modes and LSM works the best. This is the Ohio MARCS system. There is not "Reset to Defaults" on the Advanced Tab that I could see. Though I think with one exception, I am using the defaults. The only exception being switch control channel after "2" seconds of inactivity.

Sorry about that, I forgot that button is on the P25RX-II software only (for now). It is the same things as a 'factory' command. I made another change if you want to try that. 01-31_0922. Hopefully that won't mess the audio up for the 2 people that have let me know that 01-31_0648 was the best audio ever.

 

[dispatchgeek]

Running 0648, P25 Modulation CQPSK/C4FM is sounding great in my neck of the woods. Appears to be roaming my three towers quite well after I added 1 second of delay to the CC activity switch.

 

[btt]

Thanks for the feedback guys. I put a link back up for 01-31_0648 since at least 3 people report it to be working well.

 

[goldmyne99]

Version _0922 working well here on both LSM P1and P2. Test freq also works.

 

[beischel]

Just loaded 0922 still has audio breaking up quite a bit. I tried to upload some audio samples recorded the other day, but for some reason RR will not allow the MP3 uploads. Would like you to hear what is sounds like on many transmissions. Is there a way to email them to you?

 

[btt]

Just loaded 0922 still has audio breaking up quite a bit. I tried to upload some audio samples recorded the other day, but for some reason RR will not allow the MP3 uploads. Would like you to hear what is sounds like on many transmissions. Is there a way to email them to you?

Sure, I sent you an email.

 

[brndnstffrd]

Havent been commenting much lately, but its more due to there being nothing to report. I had been using 01_07_0733 which had been running great since it was released. Then I updated to 01_29_0511 and it is also running flawlessly and sounding great. I will try the latest version shortly. As im sure is the case with many other users, I take more of a "no news is good news" stance in that I typically dont comment unless I find a problem or see a post where you are asking for feedback.

 

[btt]

Havent been commenting much lately, but its more due to there being nothing to report. I had been using 01_07_0733 which had been running great since it was released. Then I updated to 01_29_0511 and it is also running flawlessly and sounding great. I will try the latest version shortly. As im sure is the case with many other users, I take more of a "no news is good news" stance in that I typically dont comment unless I find a problem or see a post where you are asking for feedback.

Thank you for the comments.

 

[W0RS]

For me 1602 has some choppy audio so I went back to 0648 which is fantastic. Both versions set up with same settings. This is on a P1 simulcast MOSWIN system in Missouri….