Occasional loud "beep" / Sonobus@RaspberryPI
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Christiaan Roselaar
Jun 21, 2021, 6:47:37 AM6/21/21
to SonoBus Users
Hi Jesse.
At the same time the jackdriver throws an error, please see attachment.
Additional info:
OS: Linux Raspbian-64 5.10.17-v8+ #1421 SMP PREEMPT Thu May 27 14:01:37 BST 2021 aarch64 GNU/Linux
Hardware: RPI4 / 4GB & RPI4 / 2GB
Hardware: RPI4 / 4GB & RPI4 / 2GB
Does the error thrown in any way helps determining what's going wrong (and where)?
Can I provide any more info that culd help to overcome this issue? Please let me know.
Kind regards,
Christiaan
Jesse Chappell
Jun 21, 2021, 12:15:18 PM6/21/21
to Christiaan Roselaar, SonoBus Users
Not entirely sure why that might be happening. What are your audio
settings for Jack (sample rate, period size and count)?
Jesse
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settings for Jack (sample rate, period size and count)?
Jesse
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Christiaan Roselaar
Jun 21, 2021, 3:27:04 PM6/21/21
to SonoBus Users
HI Jesse.
"Jackd:" is started with the following command: jackd -dalsa -dhw:USB -r44100 -p64 -n2
Not sure what you mean bij "count" though.
Christiaan
"Jackd:" is started with the following command: jackd -dalsa -dhw:USB -r44100 -p64 -n2
Not sure what you mean bij "count" though.
Christiaan
Op maandag 21 juni 2021 om 18:15:18 UTC+2 schreef jesse:
Jesse Chappell
Jun 21, 2021, 3:33:55 PM6/21/21
to Christiaan Roselaar, SonoBus Users
I would recommend experimenting with some different jackd audio
parameters. Try '-r44100 -p64 -n3' (increasing number of periods to
3), also try '-r48000 -p64 -n2' or '-r48000 -p64 -n3' (using 48000 as
the sample rate instead of 44100) and see if any of those things
reduce the number of issues you have.
Jesse
> To view this discussion on the web visit https://groups.google.com/d/msgid/sonobus-users/b6adb0e0-9303-44b3-8924-27d6f1b61b8fn%40googlegroups.com.
parameters. Try '-r44100 -p64 -n3' (increasing number of periods to
3), also try '-r48000 -p64 -n2' or '-r48000 -p64 -n3' (using 48000 as
the sample rate instead of 44100) and see if any of those things
reduce the number of issues you have.
Jesse
Christiaan Roselaar
Jun 23, 2021, 10:18:24 AM6/23/21
to SonoBus Users
Hi Jesse.
I will give it a try next weekend and let you know.
For those interested in contemporary classical music performed life & on-line;
you can register on-line and become part of the audience of these first two experimental and interactive concerts.
Participation is free. Check-out the link below to find out more.
https://www.ensembleinsomnio.nl/touchlab
Kind regards,
Christiaan
I will give it a try next weekend and let you know.
Insomnio is currently rehearsing with some 10 musicians spread out all over Holland.
Life / on-line concerts are planned for Jun 29th and July 2nd. Sonobus will be used to interconnect the musicians and the studio.For those interested in contemporary classical music performed life & on-line;
you can register on-line and become part of the audience of these first two experimental and interactive concerts.
Participation is free. Check-out the link below to find out more.
https://www.ensembleinsomnio.nl/touchlab
Kind regards,
Christiaan
Op maandag 21 juni 2021 om 21:33:55 UTC+2 schreef jesse:
Christiaan Roselaar
Jul 1, 2021, 9:32:05 AM7/1/21
to SonoBus Users
HI Jesse & all.
Over the last couple of days I've done extensive testing, playing around with different Jackd- settings.
Platform: RPI4/4GB. OS: Raspian Buster (64bit, Beta).
Over the last couple of days I've done extensive testing, playing around with different Jackd- settings.
Platform: RPI4/4GB. OS: Raspian Buster (64bit, Beta).
When running Sonobus on top of jackd -r48000 -p64 -n3 I experience loud "beeps" about once every 4 -5 minutes.
These "beeps" last about one second and are accompanied by the error-message I sent in before.
After having changed the FPS from 64 to 128 the amount of "beeps" reduced significantly?!
Not more than one - two per hour now.
The RPI DSP-load seems to give some indication whether or not one can expect strange audio-artifacts.
When this load is <5%, practically no occurrences. Around 10%, 1 -2 times per hour. With the aforementioned -p128 setting that is.
I'm still glad all our musicians use (remotely operated/configured) RPI's. I will however see if I can do some tests on some very small headless PC running Linux to see how that goes.
Thanks!
Christtiaan
After having changed the FPS from 64 to 128 the amount of "beeps" reduced significantly?!
Not more than one - two per hour now.
The RPI DSP-load seems to give some indication whether or not one can expect strange audio-artifacts.
When this load is <5%, practically no occurrences. Around 10%, 1 -2 times per hour. With the aforementioned -p128 setting that is.
I'm still glad all our musicians use (remotely operated/configured) RPI's. I will however see if I can do some tests on some very small headless PC running Linux to see how that goes.
Thanks!
Christtiaan
Op woensdag 23 juni 2021 om 16:18:24 UTC+2 schreef Christiaan Roselaar:
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