Hello,
Is this possible has anybody achieved this with a sound card, 192000hz working with 1msec latency,
thankyou,
Jack.
Moderators: hannu, dev, kodachi, cesium
cesium wrote:I've merged all your topics, since they all revolve around the same question..
A) The Echo is not supported by OSS4, AFAIK. You're probably seeing ALSA's OSS emulation.
B) 1msec/192K? I guess it's possible (especially on high-end really expensive cards like the Lynx?), though one would have to edit osscore.conf to get it (raising max_intrate). Dunno how many latency one gets on the Xonars...
Jack1 wrote:cesium wrote:I've merged all your topics, since they all revolve around the same question..
A) The Echo is not supported by OSS4, AFAIK. You're probably seeing ALSA's OSS emulation.
B) 1msec/192K? I guess it's possible (especially on high-end really expensive cards like the Lynx?), though one would have to edit osscore.conf to get it (raising max_intrate). Dunno how many latency one gets on the Xonars...
Could you be of anymore help with this, I am almost 99 percent sure a Pci express card would be the best option, I was looking in to 64 bit 32 bit and only seem to have been able to find a 28 bit audio interface, do you know any cards that offer more than 24 bits . I came across SSE2 which lower lats for me.
I know in the future Pci Express cards that can record at 64 bit / 192 Khz will give zero latency's no delays nothing what so ever, its just hard trying to find which is the best option today.
With the Echo I am getting 1 sec lats all the way up to 66khz then it breaks, strange if it's alsa oss emulation, I can't get 1 msec lats with the actual alsa drivers, oss emu works pretty good then.
So any knowledge you have in that brain of yours you would like to pass along:)
igorzwx wrote:Jack1 wrote:cesium wrote:I've merged all your topics, since they all revolve around the same question..
A) The Echo is not supported by OSS4, AFAIK. You're probably seeing ALSA's OSS emulation.
B) 1msec/192K? I guess it's possible (especially on high-end really expensive cards like the Lynx?), though one would have to edit osscore.conf to get it (raising max_intrate). Dunno how many latency one gets on the Xonars...
Could you be of anymore help with this, I am almost 99 percent sure a Pci express card would be the best option, I was looking in to 64 bit 32 bit and only seem to have been able to find a 28 bit audio interface, do you know any cards that offer more than 24 bits . I came across SSE2 which lower lats for me.
I know in the future Pci Express cards that can record at 64 bit / 192 Khz will give zero latency's no delays nothing what so ever, its just hard trying to find which is the best option today.
With the Echo I am getting 1 sec lats all the way up to 66khz then it breaks, strange if it's alsa oss emulation, I can't get 1 msec lats with the actual alsa drivers, oss emu works pretty good then.
So any knowledge you have in that brain of yours you would like to pass along:)
If I am not mistaken, this forum is for OSS4 related problems. It has nothing to do with ALSA and ALSA OSS emulation.
You may find gurus on audio recording on Audacity forum (Windows, Mac and Linux).
If you want to learn about Linux sound systems, you may try this guide
viewtopic.php?f=3&t=3933
cesium wrote:The coders typically post on oss-devel mailing list, while this is a support forum... I do wonder what setup did you use to test latency?
cladisch wrote:Sub-millisecond latencies work just fine with the Xonar ALSA driver; the OSS driver should be able to do the same.
The cmi878x driver does not configure the ADC correctly for sample rates above 48 kHz, but I don't know how much effect this has on the sound.
Using PCIe doesn't reduce latencies; PCIe could be useful only if you have other PCI cards or PCI mainboard devices on the same bus.
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