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Stuttering, revisited

Rick Kenneally #70347 Returning to this issue. I record using a Lenovo Thinkpad T14 Gen 2 AMD Ryzen, and play back on that laptop or on a Lenovo P1 Gen 3 Intel i7-10750H @ 2.6 GHz 6 core. Both devices suffer from stuttering in the audio when monitoring live or when playing back recordings. The T14 stutters when plugged in or when on battery. Problem is largely alleviated if I open a youtube video in a browser and put it on continuous (muted) play in the background. This was a tip from Paul Cianciolor on this forum. The P1 doesn't seem to stutter when plugged in, but does stutter badly when on battery. I had a particularly frustrating time this morning trying to listen to some recordings while commuting. Network was offline, so youtube wasn't an option. Running other video apps in the background made no difference. David Jackson said this is a throttling issue, but I've not yet descended into trying different tools for unlocking the throttling. Simon asked for the MMCSS log files. Here's mine from this morning when stuttering was bad: 06:26:59.972: RX1 Audio> MMCSS: Multimedia Class Scheduler service 06:26:59.972: RX1 Audio> AvSetMmThreadCharacteristics(Pro Audio) handle = x00000954, task index = 41 06:26:59.972: RX1 Audio> AvSetMmThreadPriority(2) status = 1 06:26:59.973: RX1 Audio> AvQuerySystemResponsiveness status = 1, value = 20 06:26:59.973: RX1 Audio> I'm hoping there's a setting or workaround to solve this issue that won't require too much messing with the thermal control of the laptops, and it would be great to remove the need to run youtube videos. Thanks! Rick
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Simon Brown #70348 Hi, I have a laptop which also pops / stutters. With luck will be working on this by Thursday. Also a Lenovo. Simon Brown https://g4eli.com https://sdr-radio.com toggle quoted message Show quoted text From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Rick Kenneally via groups.io <woodlandview@...> Sent: 20 March 2023 12:53 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: [SDR-Radio] Stuttering, revisited Returning to this issue. I record using a Lenovo Thinkpad T14 Gen 2 AMD Ryzen, and play back on that laptop or on a Lenovo P1 Gen 3 Intel i7-10750H @ 2.6 GHz 6 core. Both devices suffer from stuttering in the audio when monitoring live or when playing back recordings. The T14 stutters when plugged in or when on battery. Problem is largely alleviated if I open a youtube video in a browser and put it on continuous (muted) play in the background. This was a tip from Paul Cianciolor on this forum. The P1 doesn't seem to stutter when plugged in, but does stutter badly when on battery. I had a particularly frustrating time this morning trying to listen to some recordings while commuting. Network was offline, so youtube wasn't an option. Running other video apps in the background made no difference. David Jackson said this is a throttling issue, but I've not yet descended into trying different tools for unlocking the throttling. Simon asked for the MMCSS log files. Here's mine from this morning when stuttering was bad: 06:26:59.972: RX1 Audio> MMCSS: Multimedia Class Scheduler service 06:26:59.972: RX1 Audio> AvSetMmThreadCharacteristics(Pro Audio) handle = x00000954, task index = 41 06:26:59.972: RX1 Audio> AvSetMmThreadPriority(2) status = 1 06:26:59.973: RX1 Audio> AvQuerySystemResponsiveness status = 1, value = 20 06:26:59.973: RX1 Audio> I'm hoping there's a setting or workaround to solve this issue that won't require too much messing with the thermal control of the laptops, and it would be great to remove the need to run youtube videos. Thanks! Rick -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.
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Rick Kenneally #70349 Oh, that's awesome Simon. Thank you!
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David J Taylor #70350 On 20/03/2023 13:10, Simon Brown wrote: Hi, I have a laptop which also pops / stutters. With luck will be working on this by Thursday. Also a Lenovo. Simon Brown A number of us receive weather satellite data directly from a rebroadcast satellite with rates of 60/70/80 Mbps. This is UDP data so anything missed matters - no rebroadcasts. There are a number of steps we take to address this, one is buffering with a RAMdisk perhaps not relevant here, but another is looking at interrupt latency. There's a program you can use to measure this: http://www.thesycon.de/deu/latency_check.shtml but that seems to have vanished. My Web page is here if it's of interest: https://www.satsignal.eu/wxsat/dpc/index.html and the program used is "DPC Latency Checker". Google gives various sources. The dpclat-V1.4.0.exe I have is 306,928 bytes. Cheers, David GM8ARV -- SatSignal Software - Quality software for you Web: https://www.satsignal.eu Email: david-taylor@... Twitter: @gm8arv
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jdow #70355 Disable automatic CPU throttling. {^_^} On 20230320 06:10:37, Simon Brown wrote: toggle quoted message Show quoted text Hi, I have a laptop which also pops / stutters. With luck will be working on this by Thursday. Also a Lenovo. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Rick Kenneally via groups.io <woodlandview@...> Sent: 20 March 2023 12:53 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: [SDR-Radio] Stuttering, revisited Returning to this issue. I record using a Lenovo Thinkpad T14 Gen 2 AMD Ryzen, and play back on that laptop or on a Lenovo P1 Gen 3 Intel i7-10750H @ 2.6 GHz 6 core. Both devices suffer from stuttering in the audio when monitoring live or when playing back recordings. The T14 stutters when plugged in or when on battery. Problem is largely alleviated if I open a youtube video in a browser and put it on continuous (muted) play in the background. This was a tip from Paul Cianciolor on this forum. The P1 doesn't seem to stutter when plugged in, but does stutter badly when on battery. I had a particularly frustrating time this morning trying to listen to some recordings while commuting. Network was offline, so youtube wasn't an option. Running other video apps in the background made no difference. David Jackson said this is a throttling issue, but I've not yet descended into trying different tools for unlocking the throttling. Simon asked for the MMCSS log files. Here's mine from this morning when stuttering was bad: 06:26:59.972: RX1 Audio> MMCSS: Multimedia Class Scheduler service 06:26:59.972: RX1 Audio> AvSetMmThreadCharacteristics(Pro Audio) handle = x00000954, task index = 41 06:26:59.972: RX1 Audio> AvSetMmThreadPriority(2) status = 1 06:26:59.973: RX1 Audio> AvQuerySystemResponsiveness status = 1, value = 20 06:26:59.973: RX1 Audio> I'm hoping there's a setting or workaround to solve this issue that won't require too much messing with the thermal control of the laptops, and it would be great to remove the need to run youtube videos. Thanks! Rick -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.
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David J Taylor #70356 Sent earlier but hasn't appeared? A number of us receive weather satellite data directly from a rebroadcast satellite with rates of 60/70/80 Mbps. This is UDP data so anything missed matters - no rebroadcasts. There are a number of steps we take to address this, one is buffering with a RAMdisk perhaps not relevant here, but another is looking at interrupt latency. There's a program you can use to measure this: http://www.thesycon.de/deu/latency_check.shtml but that seems to have vanished. My Web page is here if it's of interest: https://www.satsignal.eu/wxsat/dpc/index.html and the program used is "DPC Latency Checker". Google gives various sources. The dpclat-V1.4.0.exe I have is 306,928 bytes. Cheers, David GM8ARV -- SatSignal Software - Quality software for you Web: https://www.satsignal.eu Email: david-taylor@... Twitter: @gm8arv
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Rick Kenneally #70393 Sorry I didn't reply, David. Thanks for the suggestions. We're (at least I am) not missing data. The stuttering is an audio problem only. When I make an mp3 audio recording, it is free of the stuttering that I'm hearing when listening directly to SDR audio output. The data recordings are complete - they play back stutter-free under the right conditions. So it's not a disk problem or a data problem or a capture, it's an audio/playback problem. Thanks Rick
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Simon Brown #70400 I am now working on this. Simon Brown https://g4eli.com https://sdr-radio.com toggle quoted message Show quoted text From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Rick Kenneally via groups.io <woodlandview@...> Sent: 21 March 2023 21:38 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Sorry I didn't reply, David. Thanks for the suggestions. We're (at least I am) not missing data. The stuttering is an audio problem only. When I make an mp3 audio recording, it is free of the stuttering that I'm hearing when listening directly to SDR audio output. The data recordings are complete - they play back stutter-free under the right conditions. So it's not a disk problem or a data problem or a capture, it's an audio/playback problem. Thanks Rick -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.
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Rick Kenneally #70404 Thank you very much, Simon! It's a great product. The stuttering is the only issue I've encountered. In my introduction to SDRs this year, SDR Console has been amazing. I used it to make hours of MWDX recordings from a recent Caribbean trip and am now spending part of every evening reviewing and logging. BTW - I love the "Navigator" - crazy simple and very effective. Best of all, the whole app is easy to use on a laptop.
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Rick Kenneally #70506 Hi Simon, Any progress or hints on this issue? I'm trying to listen to a recording while disconnected from network, so can't run youtube in background. The audio stuttering is really bad. Is it unique to Lenovo? Thanks!
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jdow #70515 Have you gone into your power settings and set it to a videos or presentation mode? Turn OFF throttling, if you can. {^_^} On 20230327 14:34:06, Rick Kenneally via groups.io wrote: toggle quoted message Show quoted text Hi Simon, Any progress or hints on this issue? I'm trying to listen to a recording while disconnected from network, so can't run youtube in background. The audio stuttering is really bad. Is it unique to Lenovo? Thanks!
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David Slipper #70516 Someone may have mentioned this before, if so I apologise. I had a similar problem with stuttering and concluded that in my case the problem was network bandwidth. My Lenovo (main laptop) and most of the machines on the network were on a 1000Mb switch but the spur to the Win 7 machine that carried the SDR dongle and the laser printer (to reduce EMI it was as far away as possible) was via a 100Mb switch. Replacing the 100Mb switch with a 1000Mb switch fixed the problem. May be worth bearing in mind ... Dave On 28/03/2023 03:28, jdow wrote: toggle quoted message Show quoted text Have you gone into your power settings and set it to a videos or presentation mode? Turn OFF throttling, if you can. {^_^} On 20230327 14:34:06, Rick Kenneally via groups.io wrote: Hi Simon, Any progress or hints on this issue? I'm trying to listen to a recording while disconnected from network, so can't run youtube in background. The audio stuttering is really bad. Is it unique to Lenovo? Thanks!
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Simon Brown #70518 OK, I'll invite you to the test team. I've added a few tests in the software. Simon Brown https://g4eli.com https://sdr-radio.com toggle quoted message Show quoted text From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Rick Kenneally via groups.io <woodlandview@...> Sent: 27 March 2023 22:34 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Hi Simon, Any progress or hints on this issue? I'm trying to listen to a recording while disconnected from network, so can't run youtube in background. The audio stuttering is really bad. Is it unique to Lenovo? Thanks! -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.
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Simon Brown #70519 Let me know when you've received the invite, post in the test team. Simon Brown https://g4eli.com https://sdr-radio.com toggle quoted message Show quoted text From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Simon Brown via groups.io <simon@...> Sent: 28 March 2023 06:56 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited OK, I'll invite you to the test team. I've added a few tests in the software. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Rick Kenneally via groups.io <woodlandview@...> Sent: 27 March 2023 22:34 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Hi Simon, Any progress or hints on this issue? I'm trying to listen to a recording while disconnected from network, so can't run youtube in background. The audio stuttering is really bad. Is it unique to Lenovo? Thanks! -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.
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Paul Cianciolo #70525 Simon, Might I be on that test team? PaulC W1VLF Check out my YouTube Channel "When youth departs..May wisdom be enough" On Tuesday, March 28, 2023 at 01:57:18 AM EDT, Simon Brown <simon@...> wrote: Let me know when you've received the invite, post in the test team. Simon Brown https://g4eli.com https://sdr-radio.com toggle quoted message Show quoted text From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Simon Brown via groups.io <simon@...> Sent: 28 March 2023 06:56 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited OK, I'll invite you to the test team. I've added a few tests in the software. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Rick Kenneally via groups.io <woodlandview@...> Sent: 27 March 2023 22:34 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Hi Simon, Any progress or hints on this issue? I'm trying to listen to a recording while disconnected from network, so can't run youtube in background. The audio stuttering is really bad. Is it unique to Lenovo? Thanks! -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.
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Simon Brown #70526 Only if you have stuttering / audio problems. Simon Brown https://g4eli.com https://sdr-radio.com toggle quoted message Show quoted text From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Paul Cianciolo via groups.io <paulc@...> Sent: 28 March 2023 14:49 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Simon, Might I be on that test team? PaulC W1VLF Check out my YouTube Channel "When youth departs..May wisdom be enough" On Tuesday, March 28, 2023 at 01:57:18 AM EDT, Simon Brown <simon@...> wrote: Let me know when you've received the invite, post in the test team. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Simon Brown via groups.io <simon@...> Sent: 28 March 2023 06:56 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited OK, I'll invite you to the test team. I've added a few tests in the software. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Rick Kenneally via groups.io <woodlandview@...> Sent: 27 March 2023 22:34 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Hi Simon, Any progress or hints on this issue? I'm trying to listen to a recording while disconnected from network, so can't run youtube in background. The audio stuttering is really bad. Is it unique to Lenovo? Thanks! -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.
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Paul Cianciolo #70527 Yes... I was the one who brought up the topic a month ago. Title popping in the audiu with Console PaulC W1VLF Check out my YouTube Channel "When youth departs..May wisdom be enough" On Tuesday, March 28, 2023 at 10:00:15 AM EDT, Simon Brown <simon@...> wrote: Only if you have stuttering / audio problems. Simon Brown https://g4eli.com https://sdr-radio.com toggle quoted message Show quoted text From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Paul Cianciolo via groups.io <paulc@...> Sent: 28 March 2023 14:49 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Simon, Might I be on that test team? PaulC W1VLF Check out my YouTube Channel "When youth departs..May wisdom be enough" On Tuesday, March 28, 2023 at 01:57:18 AM EDT, Simon Brown <simon@...> wrote: Let me know when you've received the invite, post in the test team. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Simon Brown via groups.io <simon@...> Sent: 28 March 2023 06:56 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited OK, I'll invite you to the test team. I've added a few tests in the software. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Rick Kenneally via groups.io <woodlandview@...> Sent: 27 March 2023 22:34 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Hi Simon, Any progress or hints on this issue? I'm trying to listen to a recording while disconnected from network, so can't run youtube in background. The audio stuttering is really bad. Is it unique to Lenovo? Thanks! -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.
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Simon Brown #70530 Thanks, Invite sent. Simon Brown https://g4eli.com https://sdr-radio.com toggle quoted message Show quoted text From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Paul Cianciolo via groups.io <paulc@...> Sent: 28 March 2023 15:02 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Yes... I was the one who brought up the topic a month ago. Title popping in the audiu with Console PaulC W1VLF Check out my YouTube Channel "When youth departs..May wisdom be enough" On Tuesday, March 28, 2023 at 10:00:15 AM EDT, Simon Brown <simon@...> wrote: Only if you have stuttering / audio problems. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Paul Cianciolo via groups.io <paulc@...> Sent: 28 March 2023 14:49 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Simon, Might I be on that test team? PaulC W1VLF Check out my YouTube Channel "When youth departs..May wisdom be enough" On Tuesday, March 28, 2023 at 01:57:18 AM EDT, Simon Brown <simon@...> wrote: Let me know when you've received the invite, post in the test team. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Simon Brown via groups.io <simon@...> Sent: 28 March 2023 06:56 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited OK, I'll invite you to the test team. I've added a few tests in the software. Simon Brown https://g4eli.com https://sdr-radio.com From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Rick Kenneally via groups.io <woodlandview@...> Sent: 27 March 2023 22:34 To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Subject: Re: [SDR-Radio] Stuttering, revisited Hi Simon, Any progress or hints on this issue? I'm trying to listen to a recording while disconnected from network, so can't run youtube in background. The audio stuttering is really bad. Is it unique to Lenovo? Thanks! -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. -- - + - + - Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.
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