Date   

Re: Sennheiser DECT USB for Lync

sm6fhz
 

Hi.
I am using a pair of Sennheiser HDR110 (864 MHz) headphones and they are working just great with SDRC, FWIW....
That is my main listening interface.
They have a few years in service, of cause. As antique as the owner....
73 / Ingolf, SM6FHZ


Re: IQ recorder #sdr-consolev3

Simon Brown
 

Hi,

 

At present scheduled recordings only support the entire bandwidth, so start the radio in the definition with the closest possible bandwidth.

 

SDR Console must be running, it cannot be started to make a recording.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Zacharias Liangas via groups.io
Sent: 15 January 2022 17:39
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] IQ recorder #sdr-consolev3

 

I used the recent days the IQ recorder scheduler with some success the previous days . I used so far only  the instant data recorder from the rec menu which i knew much more than that.as far as i tested i can support only one insta or delayed recording
I wonder if the scheduler today can use shorter bandwidths than the standard as give by the SDR itself
For example I m interested to only record only the 41mb band or the full MW band using my RSP1a without spending unnecessary bandwidth provided by the SDR's settings yielding bigger files  Just two examples Any ideas ?

My other question are already solved from the practice : (DR: data rec )
DR CAN start the program if  SDRC is standby or stopped
but DR is not shown in the status bar even if it is checked

What i don't now: (do you have any answer? )
DR cannot activate SDRC and start recording (that mans SDRC not running )
DR cant start SDRC if system is in hibernation

I still use the old version 3.26

Hope you understand my message adn reply to all my observations above
thank you


--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


IQ recorder #sdr-consolev3

Zacharias Liangas
 

I used the recent days the IQ recorder scheduler with some success the previous days . I used so far only  the instant data recorder from the rec menu which i knew much more than that.as far as i tested i can support only one insta or delayed recording
I wonder if the scheduler today can use shorter bandwidths than the standard as give by the SDR itself
For example I m interested to only record only the 41mb band or the full MW band using my RSP1a without spending unnecessary bandwidth provided by the SDR's settings yielding bigger files  Just two examples Any ideas ?

My other question are already solved from the practice : (DR: data rec )
DR CAN start the program if  SDRC is standby or stopped
but DR is not shown in the status bar even if it is checked

What i don't now: (do you have any answer? )
DR cannot activate SDRC and start recording (that mans SDRC not running )
DR cant start SDRC if system is in hibernation

I still use the old version 3.26

Hope you understand my message adn reply to all my observations above
thank you


Re: Doppler Signal Tracking

Dave (NK7Z)
 

There is a group on groups.io which discusses this very subject...

https://groups.io/g/Dopplergram

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 1/15/22 09:29, Re Claudio wrote:
The Signal Tracking of Console 3 is able to track big Doppler Shift like around 1 kHz/s of the Starlink constellation ?
Thanks .
73-Claudio Re


Doppler Signal Tracking

Re Claudio
 

The Signal Tracking of Console 3 is able to track big Doppler Shift like around 1 kHz/s of the Starlink constellation ?
Thanks . 
73-Claudio Re 


Sennheiser DECT USB for Lync

Simon Brown
 

Hi,

 

Does anyone have one of these devices? I’ve had a direct e-mail from an owner who complains that Console doesn’t drive it correctly.

 

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 


--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Audio issue on SDR Console

Simon Brown
 

Ken,

 

Just check the 250ms, all info should be in the help pane. With VAC latency is not a big problem – usually.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 15 January 2022 11:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Thank you so much, Simon.  I’ll give that a try.  I have a question regarding the audio buffer size window.  Under the buffer size section on the first row, there are options for ‘Default’, ‘x2’, and ‘x4’.  What exactly is the ‘Default’ setting here?  The reason I ask is that when one click on the blue “Defaults” switch two rows down, the buffer size changes to a  “new” default value of ‘X2’ instead of the other ‘Default’ value.  I’m just trying to understand the difference between the two different default settings.

 

When I enable the ‘Use 250ms buffer’ option, should I see the audio latency figure in the lower right corner of the Console display also increase to something larger than 250 ms?  If I run the Console with the audio routed directly to the speakers, thus bypassing the VAC, I normally see the audio latency in the lower right corner hovering between 40 and 50 ms.  When I send the audio through the VAC with the 250 ms buffer added, the latency value in the lower right corner only increases to a total of a little over 100 ms, even after the introduction of the 250 ms buffer.

 

Thanks again for such a wonderful program.  Have a wonderful weekend.

 

Ken

 


--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Audio issue on SDR Console

Ken Sejkora
 

Thank you so much, Simon.  I’ll give that a try.  I have a question regarding the audio buffer size window.  Under the buffer size section on the first row, there are options for ‘Default’, ‘x2’, and ‘x4’.  What exactly is the ‘Default’ setting here?  The reason I ask is that when one click on the blue “Defaults” switch two rows down, the buffer size changes to a  “new” default value of ‘X2’ instead of the other ‘Default’ value.  I’m just trying to understand the difference between the two different default settings.

 

When I enable the ‘Use 250ms buffer’ option, should I see the audio latency figure in the lower right corner of the Console display also increase to something larger than 250 ms?  If I run the Console with the audio routed directly to the speakers, thus bypassing the VAC, I normally see the audio latency in the lower right corner hovering between 40 and 50 ms.  When I send the audio through the VAC with the 250 ms buffer added, the latency value in the lower right corner only increases to a total of a little over 100 ms, even after the introduction of the 250 ms buffer.

 

Thanks again for such a wonderful program.  Have a wonderful weekend.

 

Ken

 


Re: Audio issue on SDR Console

Simon Brown
 

Ken,

 

Look at the window below, make sure Use 250ms buffer… is checked.

 

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 14 January 2022 23:46
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Hi Simon,

 

I figured out how to create the log file.  I attached two of them, one without the VAC software running and the SDRC audio going directly to the speaker, and the other with the VAC software engaged and SDRC routing its audio through the virtual cable.  I did notice that I could hear the audio “popping” occurring during the latter session with the VAC.

 

As another point of information, the audio popping is most noticeable while operating in the non-FM modes.  That is, when the mode is set to AM, SAM, ECSS-L, ECSS-U, CW-L, CW-U, LSB, USB, Wide-L, Wide-U, or DSB, the popping is more noticeable.  However, I can’t really discern any audio popping when tuned to BC-FM, N-FM, or W-FM. 

 

Also, I disconnected the antenna from the Discovery HF+ when operating in the VAC-piped configuration, such that there was no signal to be processed other than the noise floor white noise.  I could *NOT* hear any popping while using any of the various modes.  The popping only seems to occur when there is an audio signal to pass out through the VAC.

 

I hope you find this information useful.  Thanks again for such a great program.  Have a great weekend.

 

Ken

 

From: Ken Sejkora
Sent: Friday, January 14, 2022 05:50 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Hi Simon,

 

Thanks for the ideas.  Just for baseline information, the CPU is an Intel Core i7 7700K running at 4400 MHz.    I have 32 GB of DDR4 RAM running at 1200 MHz.  When running SDRConsole, the total CPU load is around 22-24%, and when ‘idle’ without SDRC the CPU load is about 17-19%.  The CPU indicator at the bottom of the SDRC screen show CPU utilization at about 2.8%.  A screenshot of the CPU load is attached. 

 

How do I find the logfile for the session?  Where is it located?  Do I actually have to ‘create’ it while running SDRC, or is it created automatically?  Do you want a logfile with SDRC running while on VAC, and another while it is sending output directly to the speakers?  Once I know how and where to get it, I’ll send it to you.

 

Thanks again.  --  Ken

 

 

From: Simon Brown
Sent: Friday, January 14, 2022 03:37 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Also,

 

What is the general CPU load on your computer?

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 14 January 2022 20:35
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Ken,

 

A few ideas:

 

  • SDR Console uses WASAPI, the other programs the WDM audio drivers.
  • If the audio is OK via speakers but not over a VAC then it must be the VAC causing the problem, specifically the drivers.
  • Please show the logfile for a session with the VAC – I want to check a few things.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

 


--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Audio issue on SDR Console

Simon Brown
 

Ken,

 

Thanks for the logfiles, I’m checking a few things.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 14 January 2022 23:46
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Hi Simon,

 

I figured out how to create the log file.  I attached two of them, one without the VAC software running and the SDRC audio going directly to the speaker, and the other with the VAC software engaged and SDRC routing its audio through the virtual cable.  I did notice that I could hear the audio “popping” occurring during the latter session with the VAC.

 

As another point of information, the audio popping is most noticeable while operating in the non-FM modes.  That is, when the mode is set to AM, SAM, ECSS-L, ECSS-U, CW-L, CW-U, LSB, USB, Wide-L, Wide-U, or DSB, the popping is more noticeable.  However, I can’t really discern any audio popping when tuned to BC-FM, N-FM, or W-FM. 

 

Also, I disconnected the antenna from the Discovery HF+ when operating in the VAC-piped configuration, such that there was no signal to be processed other than the noise floor white noise.  I could *NOT* hear any popping while using any of the various modes.  The popping only seems to occur when there is an audio signal to pass out through the VAC.

 

I hope you find this information useful.  Thanks again for such a great program.  Have a great weekend.

 

Ken

 

From: Ken Sejkora
Sent: Friday, January 14, 2022 05:50 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Hi Simon,

 

Thanks for the ideas.  Just for baseline information, the CPU is an Intel Core i7 7700K running at 4400 MHz.    I have 32 GB of DDR4 RAM running at 1200 MHz.  When running SDRConsole, the total CPU load is around 22-24%, and when ‘idle’ without SDRC the CPU load is about 17-19%.  The CPU indicator at the bottom of the SDRC screen show CPU utilization at about 2.8%.  A screenshot of the CPU load is attached. 

 

How do I find the logfile for the session?  Where is it located?  Do I actually have to ‘create’ it while running SDRC, or is it created automatically?  Do you want a logfile with SDRC running while on VAC, and another while it is sending output directly to the speakers?  Once I know how and where to get it, I’ll send it to you.

 

Thanks again.  --  Ken

 

 

From: Simon Brown
Sent: Friday, January 14, 2022 03:37 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Also,

 

What is the general CPU load on your computer?

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 14 January 2022 20:35
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Ken,

 

A few ideas:

 

  • SDR Console uses WASAPI, the other programs the WDM audio drivers.
  • If the audio is OK via speakers but not over a VAC then it must be the VAC causing the problem, specifically the drivers.
  • Please show the logfile for a session with the VAC – I want to check a few things.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

 


--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Noise level variation Airspy HF+

Simon Brown
 

Yes,

 

Screenshots will explain – I wonder if this is something to do with the Airspy AGC?

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Kriss Kliegle KA1GJU
Sent: 15 January 2022 00:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Noise level variation AirSpy HF+

 

How about two screen shots, posted as attachments of the two conditions. Maybe there's a pre-amp or visual gain setting changing? Be sure the DSP window is displayed when the screen shot is taken.

73 Kriss KA1GJU


--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Noise level variation AirSpy HF+

Kriss Kliegle KA1GJU
 

How about two screen shots, posted as attachments of the two conditions. Maybe there's a pre-amp or visual gain setting changing? Be sure the DSP window is displayed when the screen shot is taken.

73 Kriss KA1GJU


Re: Audio issue on SDR Console

Dale Elshoff WB8CJW
 

Ken,

Your file /SDR Console tmp_VAC-Employed.txt/ shows an error at line 105 'Error opening Speakers'.  Maybe the VAC is continuously retrying and causing the popping attempting to connect.

Did you try the things Simon suggested?

Dale


On 1/14/2022 7:12 PM, Ken Sejkora wrote:

Valid question, Dale.  I looked at what else was running in the background, and when I shut down MalwareBytes, CPU load dropped from ~18% down to about 7%.  Wow, I never would have guessed a running anti-malware program would consume that much processor power. 

 

I also run a outside temperature logging program using rtl_tcp in the background to monitor a separate RTL-SDR looking for the remote temperature sensor signals.  Those temperature readings are logged into a text CSV file.  If I disable all of those processes, (text logging, rtl_tcp, etc.) the CPU load drops from 7% down to around 3%.

 

I’ll try running SDRC with all of these other background processes disabled to see if it makes any difference in the audio popping.  For what it’s worth, I’ve been running those background processes for the past couple of years without any issues, and they never seemed to cause any issues.  As mentioned in the original email, I first noticed the popping arising after installing a Microsoft features update. I don’t know if that’s just coincidence, or if some aspect of the update is causing the problem.

 

Thanks for the insights.  Have a great weekend, Dale.

 

Ken

 

From: Dale Elshoff WB8CJW
Sent: Friday, January 14, 2022 06:43 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Hi Ken.  I am wondering why "when ‘idle’ without SDRC the CPU load is about 17-19%".  Something is utilizing about 15%.  I have an I7 @ 3.6G and it is at 2-3% most of the  time and up to about 7% on peaks.

Dale

 



Re: Audio issue on SDR Console

Ken Sejkora
 

Valid question, Dale.  I looked at what else was running in the background, and when I shut down MalwareBytes, CPU load dropped from ~18% down to about 7%.  Wow, I never would have guessed a running anti-malware program would consume that much processor power. 

 

I also run a outside temperature logging program using rtl_tcp in the background to monitor a separate RTL-SDR looking for the remote temperature sensor signals.  Those temperature readings are logged into a text CSV file.  If I disable all of those processes, (text logging, rtl_tcp, etc.) the CPU load drops from 7% down to around 3%.

 

I’ll try running SDRC with all of these other background processes disabled to see if it makes any difference in the audio popping.  For what it’s worth, I’ve been running those background processes for the past couple of years without any issues, and they never seemed to cause any issues.  As mentioned in the original email, I first noticed the popping arising after installing a Microsoft features update. I don’t know if that’s just coincidence, or if some aspect of the update is causing the problem.

 

Thanks for the insights.  Have a great weekend, Dale.

 

Ken

 

From: Dale Elshoff WB8CJW
Sent: Friday, January 14, 2022 06:43 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Hi Ken.  I am wondering why "when ‘idle’ without SDRC the CPU load is about 17-19%".  Something is utilizing about 15%.  I have an I7 @ 3.6G and it is at 2-3% most of the  time and up to about 7% on peaks.

Dale

 


Re: Audio issue on SDR Console

Ken Sejkora
 

Hi Simon,

 

I figured out how to create the log file.  I attached two of them, one without the VAC software running and the SDRC audio going directly to the speaker, and the other with the VAC software engaged and SDRC routing its audio through the virtual cable.  I did notice that I could hear the audio “popping” occurring during the latter session with the VAC.

 

As another point of information, the audio popping is most noticeable while operating in the non-FM modes.  That is, when the mode is set to AM, SAM, ECSS-L, ECSS-U, CW-L, CW-U, LSB, USB, Wide-L, Wide-U, or DSB, the popping is more noticeable.  However, I can’t really discern any audio popping when tuned to BC-FM, N-FM, or W-FM. 

 

Also, I disconnected the antenna from the Discovery HF+ when operating in the VAC-piped configuration, such that there was no signal to be processed other than the noise floor white noise.  I could *NOT* hear any popping while using any of the various modes.  The popping only seems to occur when there is an audio signal to pass out through the VAC.

 

I hope you find this information useful.  Thanks again for such a great program.  Have a great weekend.

 

Ken

 

From: Ken Sejkora
Sent: Friday, January 14, 2022 05:50 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Hi Simon,

 

Thanks for the ideas.  Just for baseline information, the CPU is an Intel Core i7 7700K running at 4400 MHz.    I have 32 GB of DDR4 RAM running at 1200 MHz.  When running SDRConsole, the total CPU load is around 22-24%, and when ‘idle’ without SDRC the CPU load is about 17-19%.  The CPU indicator at the bottom of the SDRC screen show CPU utilization at about 2.8%.  A screenshot of the CPU load is attached. 

 

How do I find the logfile for the session?  Where is it located?  Do I actually have to ‘create’ it while running SDRC, or is it created automatically?  Do you want a logfile with SDRC running while on VAC, and another while it is sending output directly to the speakers?  Once I know how and where to get it, I’ll send it to you.

 

Thanks again.  --  Ken

 

 

From: Simon Brown
Sent: Friday, January 14, 2022 03:37 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Also,

 

What is the general CPU load on your computer?

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 14 January 2022 20:35
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Ken,

 

A few ideas:

 

  • SDR Console uses WASAPI, the other programs the WDM audio drivers.
  • If the audio is OK via speakers but not over a VAC then it must be the VAC causing the problem, specifically the drivers.
  • Please show the logfile for a session with the VAC – I want to check a few things.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

 


Re: Audio issue on SDR Console

Dale Elshoff WB8CJW
 

Hi Ken.  I am wondering why "when ‘idle’ without SDRC the CPU load is about 17-19%".  Something is utilizing about 15%.  I have an I7 @ 3.6G and it is at 2-3% most of the  time and up to about 7% on peaks.

Dale


On 1/14/2022 5:49 PM, Ken Sejkora wrote:

Hi Simon,

 

Thanks for the ideas.  Just for baseline information, the CPU is an Intel Core i7 7700K running at 4400 MHz.    I have 32 GB of DDR4 RAM running at 1200 MHz.  When running SDRConsole, the total CPU load is around 22-24%, and when ‘idle’ without SDRC the CPU load is about 17-19%.  The CPU indicator at the bottom of the SDRC screen show CPU utilization at about 2.8%.  A screenshot of the CPU load is attached. 

 

How do I find the logfile for the session?  Where is it located?  Do I actually have to ‘create’ it while running SDRC, or is it created automatically?  Do you want a logfile with SDRC running while on VAC, and another while it is sending output directly to the speakers?  Once I know how and where to get it, I’ll send it to you.

 

Thanks again.  --  Ken

 

 

From: Simon Brown
Sent: Friday, January 14, 2022 03:37 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Also,

 

What is the general CPU load on your computer?

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 14 January 2022 20:35
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Ken,

 

A few ideas:

 

  • SDR Console uses WASAPI, the other programs the WDM audio drivers.
  • If the audio is OK via speakers but not over a VAC then it must be the VAC causing the problem, specifically the drivers.
  • Please show the logfile for a session with the VAC – I want to check a few things.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 



Re: Audio issue on SDR Console

Ken Sejkora
 

Hi Simon,

 

Thanks for the ideas.  Just for baseline information, the CPU is an Intel Core i7 7700K running at 4400 MHz.    I have 32 GB of DDR4 RAM running at 1200 MHz.  When running SDRConsole, the total CPU load is around 22-24%, and when ‘idle’ without SDRC the CPU load is about 17-19%.  The CPU indicator at the bottom of the SDRC screen show CPU utilization at about 2.8%.  A screenshot of the CPU load is attached. 

 

How do I find the logfile for the session?  Where is it located?  Do I actually have to ‘create’ it while running SDRC, or is it created automatically?  Do you want a logfile with SDRC running while on VAC, and another while it is sending output directly to the speakers?  Once I know how and where to get it, I’ll send it to you.

 

Thanks again.  --  Ken

 

 

From: Simon Brown
Sent: Friday, January 14, 2022 03:37 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Also,

 

What is the general CPU load on your computer?

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 14 January 2022 20:35
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Ken,

 

A few ideas:

 

  • SDR Console uses WASAPI, the other programs the WDM audio drivers.
  • If the audio is OK via speakers but not over a VAC then it must be the VAC causing the problem, specifically the drivers.
  • Please show the logfile for a session with the VAC – I want to check a few things.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 


Re: Audio issue on SDR Console

Ken Sejkora
 

Hi Nick,

 

No, I’m using the onboard (motherboard) graphics adapter. It’s an Intel HD Graphics 630 chip on an ASRock B250M Pro 4 motherboard.  The CPU is an Intel Core i7 7700K running at 4400 MHz.    I have 32 GB of DDR4 RAM running at 1200 MHz.  When running SDRConsole, the total CPU load is around 24%, and when ‘idle’ without SDRC the CPU load is about 19%.  The CPU indicator at the bottom of the SDRC screen show CPU utilization at about 2.8%.

 

I don’t run any games, so the only other things I might do while running SDRC is checking email, doing some internet surfing with Chrome, and at times running some ham radio decoding programs (fldigi, MultiPSK, etc.)

 

Ken

 

From: Nick Arend via groups.io
Sent: Friday, January 14, 2022 03:11 PM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Ken, do you happen to have a Nvidia graphics card?

The reason I ask is that I have had intermittent problems routing audio from SDRConsole to a WDM driver for a media playback software. I don't get these problems routing audio from any other app (including SDRUno and SDR++). The snap, crackle, pop stops happening completely when I start a GPU intensive game while running SDRConsole. As soon as I exit the game, the pops begin again. I've tried changing settings, like disabling power saving settings in Windows and Nvidia control panel; nothing helps. Just wondering if you have an Nvidia card. If not, I don't want to hijack this thread and steer the conversation in a different direction. I'll start a different thread at some point.

 


Noise level variation AirSpy HF+

Jorge Garzón Gutiérrez
 

Hi,
Happy New Year to all!
My main receiver is a modified AirSpy HF+ (LW enhancement) and I've noticed something that puzzles me.

When I launch Console V3 and then I open my HF+ without switching on the Miniwhip amplifier, I get signals (just stronger ones) with a very low bed noise level. Then I switch the amplifier on and the rest of the signals on the MW band appears with a reasonable low noise level as I live in a quiet rural area. 

But when I first switch the MiniWhip amplifier on and then I launch the software and then open the HF+ receiver, the signals are there, but the bed noise level is higher by, saying... 15 dB, so the S/N is worst than before.

Why is this happening? Supposedly the noise must be the same in the system, but it is not!

Any explanation?

¡Gracias!
J

Jorge Garzón Gutiérrez "IberiaDX" 
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Blog: IberiaDX  · Twitter: @IberiaDX


Re: Audio issue on SDR Console

Simon Brown
 

Also,

 

What is the general CPU load on your computer?

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown
Sent: 14 January 2022 20:35
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Ken,

 

A few ideas:

 

  • SDR Console uses WASAPI, the other programs the WDM audio drivers.
  • If the audio is OK via speakers but not over a VAC then it must be the VAC causing the problem, specifically the drivers.
  • Please show the logfile for a session with the VAC – I want to check a few things.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Ken Sejkora
Sent: 14 January 2022 19:53
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Thanks for the tip, Kriss.  I mistakenly thought it would have worked, since I was successful when I embedded the screen capture image in my original post.  Anyway, the image file of the SDRConsole home page is attached.

 

I’m starting to think it may be an issue with the way SDRConsole interfaces with the virtual audio cable application, specifically VB-Audio Voicemeeter.  When I shut Voicemeeter down and just send the SDRConsole audio directly to the desktop speaker, totally bypassing any VAC, the popping and snapping stops altogether.  However, in that configuration, I can’t pipe the audio into decoding software.

 

The reason I do not think it is a problem with the Voicemeeter installation itself is that when I use SDRSharp, HDSDR, and/or SDR++ to feed the VAC into the decoder software, I didn’t have any noise at all.  It is only when I use SDRC.  This morning I uninstalled SDRC and all of the VAC software, rebooted and ensured all of the VAC software and audio drivers were gone, and then reinstalled the VAC software, rebooted, checked operability of the VAC software with SDRSharp, HDSDR, and SDR++, and then reinstalled SDRC, and rebooted one final time.  As shown in the attached image, I’m seeing audio latency in the mid-20 milliseconds.  Even after all of my efforts, I still get the occasional popping when using the VAC, but am getting a bit cleaner decodes of WEFAX despite the popping.  If I switch over to SDRSharp, HDSDR, or SDR++, the fax images are nearly flawless.

 

More testing to ensue.  I’m open to any suggestions other might have.  For the time being, I’ll still continue to use SDRC for casual listening, but if I want to engage in digital decoding, I may need to resort to one of the other SDR software packages until I get this issue resolved.

 

Thanks again, Kriss.  73

 

Ken - WBØOCV

 

From: Kriss Kliegle KA1GJU
Sent: Friday, January 14, 2022 11:44 AM
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Audio issue on SDR Console

 

Ken, you need to post the image as an attachment... OTW it's a blurry mess! 
The lower ribbon is VERY important to be able to read, but looking at the fuzzy green bar for audio delay...you may have an issue.
The cracks and pops are usually due to a lost packet of data, but since your SDR is physically attached to the local machine, there should be very little delay.
I get 24ms of delay on my Airspy locally. Anything goes when connected to a server outside my LAN, especially when on hotel wifi!

73 Kriss KA1GJU

 


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