5 Jan
2022
5 Jan
'22
11:34 a.m.
Hi,
as the title says, the integrated sound card of my notebook doesn't work nicely with
JACK2. The sound
is very distorted, it sounds like a sample format mismatch (i.e. the device expects S24_LE
but F32 is sent).
My setup is plain JACK on top of Alsa, no pulseaudio or pipewire. I've tried several
programs such as SuperCollider,
Firefox (with --enable-jack option) and my own, all the same phenomenon.
Another symptom is that clients don't detect the correct samplerate. If I start JACK
with a samplerate
of 44100, SuperCollider still detects 48000.
Playing around with pulseaudio and pipewire, things work better.
I'm on Arch, don't use pulseaudio typically unless needed, but I've read that
the problem occurs in other distros as well.
Here's what lspci says:
00:1f.3 Multimedia audio controller: Intel Corporation Tiger Lake-LP Smart Sound
Technology Audio Controller (rev 20)
I have powersave enabled.
My typical start options are - jackd -P98 -dalsa -dhw:0 -r44000 -p512 -n5
I've tried an external USB card which works fine.
Anyone has a hint ? Can JACK force the samplerate/sample format somehow ?
Best,
N
5 Jan
5 Jan
noon
Am 05.01.22 um 10:34 schrieb nik(a)parkellipsen.de:
My typical start options are - jackd -P98 -dalsa
-dhw:0 -r44000 -p512 -n5
That's a typo, right? ;)
(44000 instead of 44100)
My experience is that modern audio devices work better with a samplerate
of 48000 Hz. Some of them don't even sync to 44100. My ten year old T410
does, fortunately:
$ cat /proc/asound/card0/codec#0 |grep rates
rates [0x160]: 44100 48000 96000
rates [0x560]: 44100 48000 96000 192000
rates [0x560]: 44100 48000 96000 192000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
Also, n seems high to me. I usually start with lower numbers and rather
play with the periods.
greets!
Mitsch
8:23 p.m.
Yes, that was a typo. It was meant to be 44100.
The codec supports that rate.
But I think it's more about the sample format than the sample rate.
It really sounds like the card expects F32 but is sent S16_LE, and vice versa.
Best,
n
Michael Jarosch wrote on 05.01.2022 11:00 (GMT +01:00):
Am 05.01.22 um 10:34 schrieb nik(a)parkellipsen.de:
My typical start options are - jackd -P98 -dalsa
-dhw:0 -r44000 -p512
-n5
That's a typo, right? ;)
(44000 instead of 44100)
My experience is that modern audio devices work better with a samplerate
of 48000 Hz. Some of them don't even sync to 44100. My ten year old T410
does, fortunately:
$ cat /proc/asound/card0/codec#0 |grep rates
rates [0x160]: 44100 48000 96000
rates [0x560]: 44100 48000 96000 192000
rates [0x560]: 44100 48000 96000 192000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
Also, n seems high to me. I usually start with lower numbers and rather
play with the periods.
greets!
Mitsch
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9:10 p.m.
there are almost no audio interfaces that accept F32, let alone require it.
On Wed, Jan 5, 2022 at 11:27 AM <nik(a)parkellipsen.de> wrote:
Yes, that was a typo. It was meant to be 44100.
The codec supports that rate.
But I think it's more about the sample format than the sample rate.
It really sounds like the card expects F32 but is sent S16_LE, and vice versa.
Best,
n
Michael Jarosch wrote on 05.01.2022 11:00 (GMT +01:00):
Am 05.01.22 um 10:34 schrieb
nik(a)parkellipsen.de:
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
https://lists.linuxaudio.org/listinfo/linux-audio-user My typical start options are - jackd -P98 -dalsa
-dhw:0 -r44000 -p512
-n5
That's a typo, right? ;)
(44000 instead of 44100)
My experience is that modern audio devices work better with a samplerate
of 48000 Hz. Some of them don't even sync to 44100. My ten year old T410
does, fortunately:
$ cat /proc/asound/card0/codec#0 |grep rates
rates [0x160]: 44100 48000 96000
rates [0x560]: 44100 48000 96000 192000
rates [0x560]: 44100 48000 96000 192000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
rates [0x160]: 44100 48000 96000
Also, n seems high to me. I usually start with lower numbers and rather
play with the periods.
greets!
Mitsch
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
https://lists.linuxaudio.org/listinfo/linux-audio-user
9:39 p.m.
Well, that was just an example ... but I've played around with intentionally using
the "wrong" sample format to make noise music, and it sounds very similar.
Paul Davis wrote on 05.01.2022 20:08 (GMT +01:00):
there are almost no audio interfaces that accept F32,
let alone require
it.
On Wed, Jan 5, 2022 at 11:27 AM <nik(a)parkellipsen.de> wrote:
Yes, that was a typo. It was meant to be 44100.
The codec supports that rate.
But I think it's more about the sample format than the sample rate.
It really sounds like the card expects F32 but is sent S16_LE, and vice
versa.
Best,
n
Michael Jarosch wrote on 05.01.2022 11:00 (GMT +01:00):
> Am 05.01.22 um 10:34 schrieb nik(a)parkellipsen.de:
> > My typical start options are - jackd -P98 -dalsa -dhw:0 -r44000
-p512
> -n5
>
> That's a typo, right? ;)
> (44000 instead of 44100)
>
> My experience is that modern audio devices work better with a
samplerate
> of 48000 Hz. Some of them don't even
sync to 44100. My ten year old
T410
> does, fortunately:
>
> $ cat /proc/asound/card0/codec#0 |grep rates
> rates [0x160]: 44100 48000 96000
> rates [0x560]: 44100 48000 96000 192000
> rates [0x560]: 44100 48000 96000 192000
> rates [0x160]: 44100 48000 96000
> rates [0x160]: 44100 48000 96000
> rates [0x160]: 44100 48000 96000
> rates [0x160]: 44100 48000 96000
> rates [0x160]: 44100 48000 96000
>
> Also, n seems high to me. I usually start with lower numbers and
rather
play with
the periods.
greets!
Mitsch
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
https://lists.linuxaudio.org/listinfo/linux-audio-user
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
https://lists.linuxaudio.org/listinfo/linux-audio-user
9:57 p.m.
ALSA will never allow the "wrong" format to be delivered to the device.
If you select a format the device does not support, ALSA will not
allow the device configuration step to succeed.
If the device lies about what formats it supports, well, that's a
different issue.
On Wed, Jan 5, 2022 at 12:39 PM <nik(a)parkellipsen.de> wrote:
Well, that was just an example ... but I've played around with intentionally using
the "wrong" sample format to make noise music, and it sounds very similar.
Paul Davis wrote on 05.01.2022 20:08 (GMT +01:00):
there are almost no audio interfaces that accept
F32, let alone require
it.
On Wed, Jan 5, 2022 at 11:27 AM <nik(a)parkellipsen.de> wrote:
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
https://lists.linuxaudio.org/listinfo/linux-audio-user
Yes, that was a typo. It was meant to be 44100.
The codec supports that rate.
But I think it's more about the sample format than the sample rate.
It really sounds like the card expects F32 but is sent S16_LE, and vice
versa.
Best,
n
Michael Jarosch wrote on 05.01.2022 11:00 (GMT +01:00):
> Am 05.01.22 um 10:34 schrieb nik(a)parkellipsen.de:
> > My typical start options are - jackd -P98 -dalsa -dhw:0 -r44000
-p512
> -n5
>
> That's a typo, right? ;)
> (44000 instead of 44100)
>
> My experience is that modern audio devices work better with a
samplerate
> of 48000 Hz. Some of them don't even
sync to 44100. My ten year old
T410
> does, fortunately:
>
> $ cat /proc/asound/card0/codec#0 |grep rates
> rates [0x160]: 44100 48000 96000
> rates [0x560]: 44100 48000 96000 192000
> rates [0x560]: 44100 48000 96000 192000
> rates [0x160]: 44100 48000 96000
> rates [0x160]: 44100 48000 96000
> rates [0x160]: 44100 48000 96000
> rates [0x160]: 44100 48000 96000
> rates [0x160]: 44100 48000 96000
>
> Also, n seems high to me. I usually start with lower numbers and
rather
play with
the periods.
greets!
Mitsch
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
https://lists.linuxaudio.org/listinfo/linux-audio-user
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
https://lists.linuxaudio.org/listinfo/linux-audio-user 
11:13 p.m.
We have three Intel-based laptops of various vintages, from a year old to 15 years old.
Their built-in Intel audio hardware's native rate is 48Khz.
I've played 44.1Khz CD audio on all three, via Pulse or JACK, without any distortion.
On January 5, 2022 9:55:36 AM HST, Paul Davis <paul(a)linuxaudiosystems.com> wrote:
ALSA will never allow the "wrong" format to
be delivered to the device.
If you select a format the device does not support, ALSA will not
allow the device configuration step to succeed.
If the device lies about what formats it supports, well, that's a
different issue.
On Wed, Jan 5, 2022 at 12:39 PM <nik(a)parkellipsen.de> wrote:
>
> Well, that was just an example ... but I've played around with intentionally
using
> the "wrong" sample format to make noise music, and it sounds very
similar.
>
>
> Paul Davis wrote on 05.01.2022 20:08 (GMT +01:00):
> > there are almost no audio interfaces that accept F32, let alone require
> > it.
> >
> > On Wed, Jan 5, 2022 at 11:27 AM <nik(a)parkellipsen.de> wrote:
> > >
> > > Yes, that was a typo. It was meant to be 44100.
> > >
> > > The codec supports that rate.
> > >
> > > But I think it's more about the sample format than the sample rate.
> > > It really sounds like the card expects F32 but is sent S16_LE, and vice
> > versa.
> > >
> > > Best,
> > > n
> > >
> > >
> > > Michael Jarosch wrote on 05.01.2022 11:00 (GMT +01:00):
> > > > Am 05.01.22 um 10:34 schrieb nik(a)parkellipsen.de:
> > > > > My typical start options are - jackd -P98 -dalsa -dhw:0 -r44000
> > -p512
> > > > -n5
> > > >
> > > > That's a typo, right? ;)
> > > > (44000 instead of 44100)
> > > >
> > > > My experience is that modern audio devices work better with a
> > samplerate
> > > > of 48000 Hz. Some of them don't even sync to 44100. My ten year
old
> > T410
> > > > does, fortunately:
> > > >
> > > > $ cat /proc/asound/card0/codec#0 |grep rates
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x560]: 44100 48000 96000 192000
> > > > rates [0x560]: 44100 48000 96000 192000
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x160]: 44100 48000 96000
> > > >
> > > > Also, n seems high to me. I usually start with lower numbers and
> > rather
> > > > play with the periods.
> > > >
> > > > greets!
> > > > Mitsch
---
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7 comments
5 participants
participants (5)
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David W. Jones -
Gerhard Wolfstieg -
Michael Jarosch -
nik＠parkellipsen.de -
Paul Davis