22 Jan
2013
22 Jan
'13
10:26 p.m.
Anyone with experience using the UCA202? I tried it the other day
using audacity and found that it played and recorded just fine if it
was only doing one or the other. But, if I had existing tracks in
audacity and played those (only 1 stereo) and recorded a 2nd track ...
the recorded track sounded like it was filtered though a motorboat
engine (sputter, sputter ...).
I did the recording again directing the output to an existing device
and all worked fine. So the setup seems to be useable. I am thinking
that audacity (alsa?) can't read+write to the device?
I'm running Ubuntu 12.04. Didn't have jack running.
--
**** Listen to my CD at http://www.mellowood.ca/music/cedars ****
Bob van der Poel ** Wynndel, British Columbia, CANADA **
EMAIL: bob(a)mellowood.ca
WWW: http://www.mellowood.ca
22 Jan
22 Jan
10:37 p.m.
On Tue, 22 Jan 2013 22:26:57 +0100, Bob van der Poel <bob(a)mellowood.ca>
wrote:
Anyone with experience using the UCA202? I tried it
the other day
using audacity and found that it played and recorded just fine if it
was only doing one or the other. But, if I had existing tracks in
audacity and played those (only 1 stereo) and recorded a 2nd track ...
the recorded track sounded like it was filtered though a motorboat
engine (sputter, sputter ...).
I did the recording again directing the output to an existing device
and all worked fine. So the setup seems to be useable. I am thinking
that audacity (alsa?) can't read+write to the device?
I'm running Ubuntu 12.04. Didn't have jack running.
Perhaps you need to unbind some devices to use the USB device in duplex
mode? USB 1 is AFAIK (I might be mistaken) not very fast, but perhaps it
helps to get rid of other devices sharing the same IRQ.
10:50 p.m.
I have that device. I remember to experience the same
problem that was an
audacity issue (using jack)
I posted to an audacity list the other day, but got no comments back
on the issue. I just got 2.03 compiled. If I get a chance I'll try
again, but I'm not holding my breath for success :)
Thanks.
--
**** Listen to my CD at http://www.mellowood.ca/music/cedars ****
Bob van der Poel ** Wynndel, British Columbia, CANADA **
EMAIL: bob(a)mellowood.ca
WWW: http://www.mellowood.ca
23 Jan
23 Jan
1:57 a.m.
On Tue, January 22, 2013 1:26 pm, Bob van der Poel wrote:
Anyone with experience using the UCA202? I tried it
the other day
using audacity and found that it played and recorded just fine if it
was only doing one or the other. But, if I had existing tracks in
audacity and played those (only 1 stereo) and recorded a 2nd track ...
the recorded track sounded like it was filtered though a motorboat
engine (sputter, sputter ...).
I did the recording again directing the output to an existing device
and all worked fine. So the setup seems to be useable. I am thinking
that audacity (alsa?) can't read+write to the device?
I'm running Ubuntu 12.04. Didn't have jack running.
I have found with USB audio, I have to find a USB plug that has it's own
IRQ. For example I have:
16: 12488044 0 IO-APIC-fasteoi ehci_hcd:usb1,
uhci_hcd:usb2, i915, ath9k
17: 0 0 IO-APIC-fasteoi uhci_hcd:usb3
That USB2 is the left side plug on my machine, the usb3 is the right... I
only use the one on the right. I also have found I have to unload the
wireless kernel module as it's once a minute scan gives xruns... once
every five seconds if wireless is disabled.
--
Len Ovens
www.OvenWerks.net
9:56 a.m.
arOn Wed, 23 Jan 2013 01:56:51 +0100, Len Ovens <len(a)ovenwerks.net> wrote:
On Tue, January 22, 2013 1:26 pm, Bob van der Poel wrote:
As already mentioned in my first reply, it's possible to unbind devices
that share the IRQ.
Another thing to do, that might help a little bit, is to make the USB port
used by the sound device head of the USB devices by rtirq. Take care that
the kernel and the rtirq script fit together. I'm using Ubuntu since
years, most of the times the rtirq script from the repositories doesn't
fit to the kernels of the repositories.
Instead of using an Ubuntu kernel, building a kernel-rt also might help a
little bit.
Some people stop all unneeded services. This never improved anything on my
machine, but it doesn't harm to stop unneeded services.
You could test jackd and set periodes/buffer (n) to 3.
Anyone with experience using the UCA202? I tried
it the other day
using audacity and found that it played and recorded just fine if it
was only doing one or the other. But, if I had existing tracks in
audacity and played those (only 1 stereo) and recorded a 2nd track ...
the recorded track sounded like it was filtered though a motorboat
engine (sputter, sputter ...).
I did the recording again directing the output to an existing device
and all worked fine. So the setup seems to be useable. I am thinking
that audacity (alsa?) can't read+write to the device?
I'm running Ubuntu 12.04. Didn't have jack running.
I have found with USB audio, I have to find a USB plug that has it's own
IRQ. For example I have:
16: 12488044 0 IO-APIC-fasteoi ehci_hcd:usb1,
uhci_hcd:usb2, i915, ath9k
17: 0 0 IO-APIC-fasteoi uhci_hcd:usb3
That USB2 is the left side plug on my machine, the usb3 is the right... I
only use the one on the right. I also have found I have to unload the
wireless kernel module as it's once a minute scan gives xruns... once
every five seconds if wireless is disabled. 
7:26 p.m.
On 01/22/2013 10:56 PM, Ralf Mardorf wrote:
You could test jackd and set periodes/buffer (n) to 3.
That makes a big difference on USB devices. When I was trying N=2 on my
UCA202, it was having lots of problems.
--
David
gnome(a)hawaii.rr.com
authenticity, honesty, community
http://clanjones.org/david/
http://dancing-treefrog.deviantart.com/
5:29 p.m.
On Tue, Jan 22, 2013 at 5:56 PM, Len Ovens <len(a)ovenwerks.net> wrote:
On Tue, January 22, 2013 1:26 pm, Bob van der Poel wrote:
Oh, that's interesting. I had it plugged into one of the 2 ports on
the front of the box. Had a look at /proc/interrupts and see that I
picked a busy port. The 2nd port on the front seems less used. I'll
give that one a try.
--
**** Listen to my CD at http://www.mellowood.ca/music/cedars ****
Bob van der Poel ** Wynndel, British Columbia, CANADA **
EMAIL: bob(a)mellowood.ca
WWW: http://www.mellowood.ca
Anyone with experience using the UCA202? I tried
it the other day
using audacity and found that it played and recorded just fine if it
was only doing one or the other. But, if I had existing tracks in
audacity and played those (only 1 stereo) and recorded a 2nd track ...
the recorded track sounded like it was filtered though a motorboat
engine (sputter, sputter ...).
I did the recording again directing the output to an existing device
and all worked fine. So the setup seems to be useable. I am thinking
that audacity (alsa?) can't read+write to the device?
I'm running Ubuntu 12.04. Didn't have jack running.
I have found with USB audio, I have to find a USB plug that has it's own
IRQ. For example I have:
16: 12488044 0 IO-APIC-fasteoi ehci_hcd:usb1,
uhci_hcd:usb2, i915, ath9k
17: 0 0 IO-APIC-fasteoi uhci_hcd:usb3
That USB2 is the left side plug on my machine, the usb3 is the right... I
only use the one on the right. I also have found I have to unload the
wireless kernel module as it's once a minute scan gives xruns... once
every five seconds if wireless is disabled. 
8:58 a.m.
Am 22.01.2013 22:26, schrieb Bob van der Poel:
Anyone with experience using the UCA202? I tried it
the other day
using audacity and found that it played and recorded just fine if it
was only doing one or the other. But, if I had existing tracks in
audacity and played those (only 1 stereo) and recorded a 2nd track ...
the recorded track sounded like it was filtered though a motorboat
engine (sputter, sputter ...).
I did the recording again directing the output to an existing device
and all worked fine. So the setup seems to be useable. I am thinking
that audacity (alsa?) can't read+write to the device?
I'm running Ubuntu 12.04. Didn't have jack running.
What samplerate are you using? I have problems running the device at
44.1kHz but it works fine when using 48kHz
Jannis
5:31 p.m.
On Wed, Jan 23, 2013 at 12:58 AM, Jannis Achstetter
<jannis_achstetter(a)web.de> wrote:
Am 22.01.2013 22:26, schrieb Bob van der Poel:
I was using the default 44.1. I didn't know that one could change the
rate on this device. I'll give that a go as well.
--
**** Listen to my CD at http://www.mellowood.ca/music/cedars ****
Bob van der Poel ** Wynndel, British Columbia, CANADA **
EMAIL: bob(a)mellowood.ca
WWW: http://www.mellowood.ca
Anyone with experience using the UCA202? I tried
it the other day
using audacity and found that it played and recorded just fine if it
was only doing one or the other. But, if I had existing tracks in
audacity and played those (only 1 stereo) and recorded a 2nd track ...
the recorded track sounded like it was filtered though a motorboat
engine (sputter, sputter ...).
I did the recording again directing the output to an existing device
and all worked fine. So the setup seems to be useable. I am thinking
that audacity (alsa?) can't read+write to the device?
I'm running Ubuntu 12.04. Didn't have jack running.
What samplerate are you using? I have problems running the device at
44.1kHz but it works fine when using 48kHz
6:09 p.m.
Am 23.01.2013 17:31, schrieb Bob van der Poel:
On Wed, Jan 23, 2013 at 12:58 AM, Jannis Achstetter
<jannis_achstetter(a)web.de> wrote:
It's not a device-setting, rather s.th. you tell your
audio-software/driver. When using jack you set a fixed sample-rate in
the server and all audio-apps connected to it will have to use that rate
(or resample).
Don't know how it works with other software/driver combinations.
Jannis
Am 22.01.2013 22:26, schrieb Bob van der Poel:
I was using the default 44.1. I didn't know that one could change the
rate on this device. I'll give that a go as well. Anyone with experience using the UCA202? I tried
it the other day
using audacity and found that it played and recorded just fine if it
was only doing one or the other. But, if I had existing tracks in
audacity and played those (only 1 stereo) and recorded a 2nd track ...
the recorded track sounded like it was filtered though a motorboat
engine (sputter, sputter ...).
I did the recording again directing the output to an existing device
and all worked fine. So the setup seems to be useable. I am thinking
that audacity (alsa?) can't read+write to the device?
I'm running Ubuntu 12.04. Didn't have jack running.
What samplerate are you using? I have problems running the device at
44.1kHz but it works fine when using 48kHz
7:19 p.m.
On 01/23/2013 07:08 AM, Jannis Achstetter wrote:
Am 23.01.2013 17:31, schrieb Bob van der Poel:
Works fine here with Debian Sid running at 48KHz. Never tried it at 44.1
or without JACK.
--
David
gnome(a)hawaii.rr.com
authenticity, honesty, community
http://clanjones.org/david/
http://dancing-treefrog.deviantart.com/
On Wed, Jan 23, 2013 at 12:58 AM, Jannis
Achstetter
<jannis_achstetter(a)web.de> wrote:
It's not a device-setting, rather s.th. you tell your
audio-software/driver. When using jack you set a fixed sample-rate in
the server and all audio-apps connected to it will have to use that rate
(or resample).
Don't know how it works with other software/driver combinations. Am 22.01.2013 22:26, schrieb Bob van der Poel:
I was using the default 44.1. I didn't know that one could change the
rate on this device. I'll give that a go as well. Anyone with experience using the UCA202? I tried
it the other day
using audacity and found that it played and recorded just fine if it
was only doing one or the other. But, if I had existing tracks in
audacity and played those (only 1 stereo) and recorded a 2nd track ...
the recorded track sounded like it was filtered though a motorboat
engine (sputter, sputter ...).
I did the recording again directing the output to an existing device
and all worked fine. So the setup seems to be useable. I am thinking
that audacity (alsa?) can't read+write to the device?
I'm running Ubuntu 12.04. Didn't have jack running.
What samplerate are you using? I have problems running the device at
44.1kHz but it works fine when using 48kHz
4351
days inactive
4352
days old
linux-audio-user@lists.linuxaudio.org
11 comments
6 participants
participants (6)
-
Bob van der Poel -
david -
Diego Simak -
Jannis Achstetter -
Len Ovens -
Ralf Mardorf