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TOPIC: Receive audio splitches

Receive audio splitches 15 Aug 2021 18:29 #1

Running SDR 1.3.1 U10 under Win 10 on a Ryzen 7 with SSD +32Gb. I hear occasional audio splitches or crackles which seem to be prompted by other demands upon system resources. I first encountered the problem on a lesser powered i7 machine which was multi tasking. On the i7 machine Windows Task Manager would report CPU use peaking to 100% which seemed to coincide with the undesired effect, so I installed SDR2 + SDC and LogHX onto the Ryzen machine. No other programs. Since then I have not seen Task manager report CPU use above 20%, memory above 15%, Disk 0%, Network 1% and GPU 35% yet the audible crackles still occur.

Not related I think but I have noticed that Task Manager assesses SDR2 CPU usage at roughly 4x that indicated by SDr2.

Am I alone in experiencing this crackling effect? I have been unable to find any other references to it. Ideas?

Thanks

Bob, 5B4AGN
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Receive audio splitches 15 Oct 2021 13:55 #2

  • k5rhd
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5B4AGN wrote:
Running SDR 1.3.1 U10 under Win 10 on a Ryzen 7 with SSD +32Gb. I hear occasional audio splitches or crackles which seem to be prompted by other demands upon system resources. I first encountered the problem on a lesser powered i7 machine which was multi tasking. On the i7 machine Windows Task Manager would report CPU use peaking to 100% which seemed to coincide with the undesired effect, so I installed SDR2 + SDC and LogHX onto the Ryzen machine. No other programs. Since then I have not seen Task manager report CPU use above 20%, memory above 15%, Disk 0%, Network 1% and GPU 35% yet the audible crackles still occur.

Not related I think but I have noticed that Task Manager assesses SDR2 CPU usage at roughly 4x that indicated by SDr2.

Am I alone in experiencing this crackling effect? I have been unable to find any other references to it. Ideas?

Thanks

Bob, 5B4AGN




Bob, I have tried running both versions of ESDR on a Mac mini with 36GB of RAM (yes 36!), 3.6gHz quad core i3 and the Intel UHD Graphics 630 GPU. I am getting the same sounds. I think it sounds like a really dirty analog potentiometer. Scratchy, and somewhat annoying. It seems worse on ESDR2 than 3 but it is there on both. I have the luxury of access to several computers including a PC and it seems similar on an older, yet capable Windows machine too. I would like to know if it is an issue with the software or radio or lack of resources on my machines.
73
K5RHD
/randy
Arvada, CO USA
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Receive audio splitches 24 Oct 2021 22:15 #3

Hello I have the same problem with sunsdr2dx, my i5 2400 pc for at least 10 years, I have the problem is because of the front jack type connector, if I connect to the pc output it seems more normal audio. I see that you have powerful machines and I thought it would be my pc, but from your comments I see that it is not like that.
73
Franc
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Receive audio splitches 25 Oct 2021 07:38 #4

  • Rome
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Hello everyone.
We are working on the solution at this very moment, hope to fix "crackling" in the upcoming update.
Роман, Roman
Expert Electronics
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Receive audio splitches 25 Oct 2021 09:20 #5

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One more thing.
This crackling heavily depends on the net adapters you use.
Those who have good net cards (be it implemented in PC or external via PCI-express) don't have this issue.

I can suggest to connect the TRX directly to your PC, without routers or switches and check again.
Роман, Roman
Expert Electronics
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Receive audio splitches 25 Oct 2021 10:08 #6

  • DaveVK
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Hi

i had that issue. Someone told me to change a setting in my windows registry. It is something to do with the PC LAN not working optimally. If I can find the registry setting I'll post it.
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Receive audio splitches 25 Oct 2021 10:18 #7

  • DaveVK
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Hi,

Here is a link that someone sent me on the Facebook Group. I did this and the crackling stopped. Radio runs smoothly.

ttcshelbyville.wordpress.com/2017/10/14/network-throttling-index/?fbclid=IwAR10R0-WEUsGnWEfRFuy0pubmDDDWjRFT2CbSkcVSsCYCCM12yEpnFANHeo

Good luck.
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Receive audio splitches 28 Oct 2021 13:21 #8

  • EA7Q
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I've had the same symptoms. I've always used the SunSDR2's headphone and MIC inputs. Setting up my station for the CQ WW I've used the microphone input and audio output of the PC and no longer have those annoying clicks that sometimes sounded. I don't know why, but it's better
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Receive audio splitches 28 Oct 2021 18:02 #9

  • N8SDR
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I made a post of some fixes for networking earlier last year that post is here:
eesdr.com/en/forum-en/other-questions/9085-possible-help-for-those-experiencing-audio-drop-out-on-windows-10-systems#18348

perhaps it will help again

Don't use crappy switches that are GREEN power saver either or some of the Basic Network products ( I have seen issues with Dlink switches and routers along with other cheap brands)
Use business class switches and routers the throughput is better and more stable, as Roman suggested - an easy way to test your network is a direct connection from (Rig to PC)

Don't use Wi-Fi unless it is your ONLY OPTION!
If you use Ethernet for radio connection but use Wi-Fi for internet - then see the post above and setup your Network METRICS accordingly by default Winturds changes WIFI to higher priority and that should not be the case you want ethernet physical hardwire connection as your priority device.

Network cards and brands can also make a difference- as well as the NIC driver - try changing the NIC driver for your network card you may find and older or newer driver or sometimes the manufacture driver verses the windows version can make a difference. Sometimes you can ROLL Back a NIC driver in windows device options,

Also Antivirus can sometimes cause issues with packet inspections- I have seen this with McAfee and Norton, as a test try disabling your A/V briefly to see if that resolves the issues, if it does you maybe able to add and exception or rule for scanning and inspection to ignore the software application or try another A/V product.
Please do not email me and ask for help I no longer will be part of this, If I could delete /remove my profile I would do so.
Last Edit: 28 Oct 2021 18:08 by N8SDR.
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Receive audio splitches 29 Oct 2021 14:53 #10

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I am running ESDR on a Mac with the same sound issue. I did move my mic/headset to the computer off of the radio and it helped a lot but it is still there occasionally. I am running enterprise grade network switch from Cisco and I have a dedicated NIC for the radio and I am running the onboard Ethernet of my Mac mini for Internet. I have switched NICs around just to see if there is a difference. My guess is that running three displays with an integrated GPU is pushing the system a lot despite the RAM and Processor I have. I will wait and see if the next release Roman spoke of will help some.

73
K5RHD
/randy
73
K5RHD
/randy
Arvada, CO USA
DM79
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Receive audio splitches 01 Nov 2021 17:07 #11

  • VK6NX
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The nature of "crackling" under Mac has nothing to do with NIC (as it is under Win), however still relates to networking. You can get connected via direct network cable or via switch (ASIC-based switches are, obviously, much recommended, as it was stated earlier), however "crackling" still may (and most likely will) occur when ESDR application is going off focus. Off focus happens when you switch between virtual desktops. Or if you switch for long enough period (60 sec or more) to another app (say - logger) within same virtual desktop.
The issue under Mac seems to be network traffic flow prioritisation, when packets from "on focus" apps take precedence over those from "off focus" apps.
Last Edit: 01 Nov 2021 17:09 by VK6NX.
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Receive audio splitches 02 Nov 2021 22:02 #12

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Thanks for the explanation on the Mac. You must be correct as the crackling does not really change if the radio is connected to my computer vs. through a switch with all of my network traffic for the system. I had to test with various focus related scenarios to check, but sure enough that is correct! Roman states that there will be a fix soon so I will abandon my switch back to a PC for now....I have a Lenovo ThinkServer that I could run Linux on but I am afraid that it would still be an issue and I do not want to go through the effort to find out the problem follows me across platforms.

Anyone in the Linux crowd care to chime in?

Thanks again and 73.
K5RHD
/randy
73
K5RHD
/randy
Arvada, CO USA
DM79
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Receive audio splitches 05 Nov 2021 14:57 #13

  • VK6NX
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Honestly, up until now I have not heard about any crackling issues under linux (which does not automatically means it is not there).

Linux is valid alternative, however it is much advised to validate linux compatibilities with your common application list (example - log). Also note that linux will require a bit more "willing to learn" approach, compared with more or less "plug'n'play" win/mac.
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Receive audio splitches 22 Nov 2021 14:49 #14

  • JJ1XBQ
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Hi!
I was bothered by the crack sound, but I gave up.
But it got much better after rewriting "NetworkThrottlingIndex". Amazing!!!
Thanks to everyone!
Now I'm looking forward to the CQ WW CW contest !

JJ1XBQ from YOKOHAMA
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Receive audio splitches 23 Nov 2021 13:53 #15

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Hello,
I noticed that moving the mouse quickly over EESDR3 creates a crunch in the audio. Tested on operating WIN 10 from MB1 which is connected in LAN with SUNSD2 DX ... Headphones connected directly to sunsd2 dx..Can someone confirm the same?

73,
Last Edit: 23 Nov 2021 13:53 by e72x.
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