22.02.08, 02:42, Florian [EMAIL PROTECTED]:
Hi,
on our IBM/Lenovo T60 laptop, we want higher audio quality than
the built-in HD-Audio, especially low latency - in the range of 1
millisecond or lower.
Can anyone recommend a PCCard/Cardbus soundcard, or possibly a
USB card supported by
Hi Andrei,
yes, I know that USB (especially 1.x) may transfer data in time
slices of 1 ms or larger. I don't know exactly about USB 2.0, so
I didn't want to rule it out.
Myself I tried several solutions, including terratec usb xs
sound card, and ended with echo indigo io. I think You should
Hi Bill,
thanks for the replies. Yes, we are doing research on ultra-low
latencies with accompanying realtime Linux and realtime software.
With good PCI cards, our test synthesizer can run quite stable at
8 samples per period (and 2 periods per buffer) at 192KHz. Now
for presentations we need to
On Fri, 22 Feb 2008, Florian wrote:
Hi Bill,
thanks for the replies. Yes, we are doing research on ultra-low
latencies with accompanying realtime Linux and realtime software.
With good PCI cards, our test synthesizer can run quite stable at
8 samples per period (and 2 periods per buffer) at
But the laptop is not running realtime linux is it? It has
sure it is...
loads of potential latencies and stuff demanding the system's
attention-- page swapping, program swapping, etc. So why would
you think that it would work on Linux without underruns? If
you wnat 1ms latencies, your
On 2/22/2008 11:55 AM, Florian wrote:
But the laptop is not running realtime linux is it? It has
sure it is...
to clarify: this is not a full realtime or embedded linux, it's
Redhat's RHEL 5 with their realtime kernel.
Florian
loads of potential latencies and stuff demanding the system's
On Fri, 22 Feb 2008, Florian wrote:
But the laptop is not running realtime linux is it? It has
sure it is...
loads of potential latencies and stuff demanding the system's
attention-- page swapping, program swapping, etc. So why would
you think that it would work on Linux without underruns?
Can anyone recommend a PCCard/Cardbus soundcard, or possibly a
USB card supported by alsa and which you've been able to run with
low latency?
The USB bus speed probably isn't going to ensure low latency. Most USB
soundcards seem limited to two channels and 48kHz. I'd recommend a
very good sound reproduction) but I certainly have never
tested its latency. Not sure how you would do so, since your
ear certainly cannot hear time differences on the level of
msec.
the beauty (and the whole idea of using real-time audio for
showcasing realtime systems) is that you WILL
On 2/22/2008 1:40 PM, James Shatto wrote:
The USB bus speed probably isn't going to ensure low latency.
Most USB soundcards seem limited to two channels and 48kHz.
I'd recommend a PCCard/Cardbus or Firewire device.
yes, I assumed that.
Is there any reason you're wanting to use something
On Fri, 2008-02-22 at 13:59 +0100, Florian wrote:
we manage to get down to 8 milliseconds buffer size at CD
quality without glitches with the onboard soundcard (Intel HDA).
However, we would like to use sub-millisecond buffer sizes.
Any chance you could share your setup for that? I struggle
On Fri, Feb 22, 2008 at 5:55 AM, Florian [EMAIL PROTECTED] wrote:
But the laptop is not running realtime linux is it? It has
sure it is...
loads of potential latencies and stuff demanding the system's
attention-- page swapping, program swapping, etc. So why would
you think that it
Hi,
I am having constant problems with alsa and my sound card.
The hardware in question is an Asrock 4coredual-sata2 motherboard, which
houses an VIA High Definition Audio Controller (rev 10) that uses the
alc888 codec.
The main problem is that either by random chance (which is usually
Hi all,
My hda_intel alc662 sound card works fine, except for the microphone. I
have a front and back plug, but both give no results.
Strange: microphone sliders are only shown in the output tabs of the
mixer (kmix), not on the input. Is there a configuration problem here?
dmesg shows the
On Fri, Feb 22, 2008 at 4:54 PM, Ferry Toth [EMAIL PROTECTED] wrote:
SW
Linux version 2.6.22-3-686 (Debian 2.6.22-6.lenny1)
alsa 1.015-4
Please try newer ALSA, either 1.0.16 or (ideally) the latest HG snapshot.
Lee
-
I did some googling and it looks like other people have gotten sound
working on this motherboard (Asus M2N-E SLI). The driver seems to
load but I get no sound. I've tried plugging the speakers into
every sound jack. Here's the output from the ALSA info script:
http://pastebin.ca/914731
I
I have a Inter HDA device and my problem is that I want to capture input (e.g.
in Ekiga for VOIP) from the mic port of my dock (Thinkpad T61p withAdvanced
mini dock)
While I can listen to the input from this port, It seems to me that I cannot
capure from it. The reason might be that I can
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