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Post by gypsyseagod on Apr 11, 2007 19:56:29 GMT
sorry for so many posts but i did finally got what i needed. i upgraded my recording software to mixcraft 3 ( the noise is gone & i have the asio options for recording source etc etc.).
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Post by gypsyseagod on Apr 13, 2007 20:22:42 GMT
if anyone ever figured out this sigmatel hd codec thing out let me know and optimum buffer settings for asio on it
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Post by gypsyseagod on Apr 14, 2007 16:02:19 GMT
can you adjust the asio buffer size & latency compensation while a song is playing? because when i do it disables the hda device & i have to exit the mixcraft program & restart.
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Post by gypsyseagod on Apr 16, 2007 18:42:03 GMT
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Post by didierma on Apr 29, 2007 8:53:27 GMT
I think i have a similar problem with my Realtek. So I look at control panel in vista but i don(t find anything about Asio. Where could I find this ?
I've a screenshot. How could I do to send you ?
Thank's Didier
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Post by gypsyseagod on Apr 29, 2007 15:41:44 GMT
you might try my help site above or google realtek support for your driver version.
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Post by Simon on May 8, 2007 8:02:53 GMT
I have this sound card in a Dell running Vista and I got it working using the Sgmatel XP drivers (you can get them from Dell) And ASIO4ALL V2.7 with the hardware turned OFF. I find that I can set the lowest latency for recording and still get pretty busy in Cubase.
With the Sigmatel VISTA drivers I can only see the device in ASIO4ALL v2.8. The Hardware buffers are forced to ON and the playback alone is very patchy
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Post by Simon on May 8, 2007 12:14:19 GMT
Still - is there a fundamental reason the option for switching off the Hardware Buffer is disabled in the 2.8 beta?
P.S. In case it wasn't clear in my previous post, the OS was always Vista, I just used the Sigmatel XP drivers.
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Post by Michael Tippach on May 8, 2007 14:42:30 GMT
With the Sigmatel VISTA drivers I can only see the device in ASIO4ALL v2.8. The Hardware buffers are forced to ON and the playback alone is very patchy "Patchy"?
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Post by Michael Tippach on May 8, 2007 14:45:32 GMT
Still - is there a fundamental reason the option for switching off the Hardware Buffer is disabled in the 2.8 beta? Yes there is: The Vista driver is a WaveRT miniport. For WaveRT, passing s/w buffers back and forth type Kernel Streaming does not work, therefore, we absolutely have to use direct access to the DMA buffers (not that this is a bad thing mind you!)
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Post by Simon on May 8, 2007 17:44:48 GMT
Thanks for the quick reply Michael.
Basically it works for me in Cubase on Vista using the sigmatel HD codec for XP and ASIO4ALL v2.7 - Thanks very much for that! With that set up I can set the ASIO buffer down to 64, but if I enable the hardware buffer, I get a very noticeable echo in the headphones when I play along. Otherwise the latency is barely there.
When I change to the Sigmatel Vista Codec v2.7 can no longer see the device. The v2.8 Beta 2 can see it, but playback is mostly silent and every second or so a segment of the recording blurts out... that is what I meant by "patchy".
I have a Dell Inspiron 9400/E1705 with Sigmatel HD Audio
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Post by Simon on May 9, 2007 10:13:34 GMT
I used CEnTrance to test the latencies and with my best working setup (v2.7 as described previously) I get a latency of between 10 and 14ms (averaging 12). Not too shabby for an on-board card, and probably better than I could get from a USB interface. As I fiddled with the Sigmatel parameters (I set everything to 24bit 48Khz) I even got down to 8ms, but this didn’t survive a reboot.
With the same config the hardware buffers offer a very consistent latency of 347ms. The offset just seems to double its own setting to this score, so an offset of 10ms comes out at 367ms. My ear can’t detect any difference in the quality of the sound. My uneducated and intuitive guess is that the Buffers are too big.
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Post by Guspaz on May 23, 2007 20:35:12 GMT
I'm also having similar problems with the Sigmatel HDAC (Vista32 on a Dell Inspiron 9400).
The system spends about 2/3 of it's time in "overload", meaning that when I try to play audio, about two thirds of the time is silence and one third is audio output. Obviously it's not really usable in that state.
Worked fine in with the same hardware and software under XP, so I guess Vista and the audio driver are the only thing that changed.
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Post by Simon on May 24, 2007 4:10:22 GMT
Hi Guspaz,
Reinstall the old Sigmatel XP drivers on your Vista32 and use ASIO4ALL 2.7 with the hardware buffers OFF. You should be able to set the ASIO buffer size to 64 and a latency of about 12ms. Go to Dell support and pretend you have XP to get the Sigmatel drivers.
The Sigmatel Hardware buffers are odd. Turning them on with this setup has a very poor latency. Strangely, when you set the ASIO buffers above 1024, you get a vast improvement. AS you increase the buffers the latency gets up to over 400ms (with occasional readings of about 60ms). When you get up to an ASIO buffer of 1152 the latency drops to about 72ms. I am hoping this info helps Michael.
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Post by Simon on May 24, 2007 4:28:17 GMT
I am only guessing, because I don't know Assembly language. When you code in other languages these things are usually controlled by structures that give you a handle on the device. I am hoping there is some value that normally defaults correctly, but needs to be explicitly initialised for Sigmatel. It seems the buffer sizes are misbehaving.
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