Tweaks for latency?

wilho · Jan 14, 2003, 02:01 PM

Wondering what kind of latency I should expect with system:

kxDrivers

Live! 5.1
TB1Ghz
kt133a

Default setting (23ms?) seems to work fine, but I found latency annoyin. Any lower setting gives random crackle to sound.

Does anyone have any tweaks to help me?

Daniel Drummond · Jan 15, 2003, 03:33 AM

I used to have a similiar system to yours and I was able to lower the latency to 5ms in stand alone VSTis, 10ms in Cubase and 20ms in Cubase with 40 loaded tracks after I disable ACPI. I used Windows XP. Maybe you should try that, although it can get you in some troubles... Read a bit about it in the net.

cooker20 · Jan 20, 2003, 04:32 PM

Had same problem myself - but the breaking point was 40ms for me - over that everything was crystal clear, under that I got clicks and pops.
Haven't had a chance to try the tip mentioned previously in this thread (and i'm not even sure I understand what it's referring to), but any suggestions at all on how to lower latency would be appreciated.
I don't think it should matter, but i will also mention that in the DSP I have the inputs in the prolog connected to asio0 and asio1 in the epilog, despite the fact that I saw other pages suggesting asio14 and asio15, but i couldn't get a signal in cubase on these, even after remapping the vst inputs.

My setup consists of

AMD Duron 1Ghz
392 M Ram
Windows 2000 Pro
Cubase Sx
Kx version 5.10.0.3528

wilho · Jan 21, 2003, 09:34 PM

Check if you have "Pci latency timer" in your bios. If so, increase value - default is usually 32, I got 96 now and it works like a charm. 5ms without clicking

You might allso want to try low latency patch, wich - I think - makes same thing. It didn't work for me though. Check http://kxproject.spb.ru/686b.php?language=en.

cooker20 · Jan 22, 2003, 01:56 PM

The link for the low latency patch (http://download.viahardware.com/vlatency_v019.zip) seems to be broken - anyone know where it else can be gotten?

Chaz.

Daniel Drummond · Jan 22, 2003, 03:01 PM

The Via latency patch didn't do any good for me. Disabling ACPI was really the way to go. It's not necessary for newer chipsets, but especifically with the kt133a it seems to do real good. Rembember that this tip is for windows xp users.

randy s · Jan 22, 2003, 03:28 PM

Daniel, are you still useing two sound cards with the two different drivers installed - Creative & KX. Is it worth the trouble & could you give me a more detailed install procedure. Thanks randy s

cooker20 · Jan 23, 2003, 02:55 PM

When i tried to disable acpi i got stuck in a boot loop - I tried updating my motherboard's drivers hoping it would let me disable acpi the driver update solved the problem on it's own. I still had the latency patch installed when I did it, so I don't know if it was just the driver update or the patch too, but either way I'm not changing anything now .

ChAz

Daniel Drummond · Jan 23, 2003, 03:13 PM

Randy,

I'm not using both sblive's right now because it really didn't give me any real advantages. I really don't need EAX for gaming (it's not that great). The only good thing about having two lives is to be able to record more channels simultaneously (line in + line in = 4 mono ins). And I don't need that. That's it. If you need more channels it is worth the trouble.

Chaz, I don't know how you tried to disable ACPI but it is done inside windows (or at its installation) and not in the bios. And yes, you'll have to re-install all the drivers for all your devices. And you'll loose the ability to have the computer turned off automatically (atx power supply).

Take a look at those links:
http://www.tweakersasylum.com/Guides...x/00000001.htm

http://www.musicxp.net/installing_tips.htm

http://www.nemesysmusic.com/support/W2k_XP_Optimize.pdf

http://www.timos-welt.de/cubase/xp_tips_e.htm

http://www.kxproject.spb.ru/acpi.php?language=en

20. How can I disable ACPI?

Depending on your scenario, there's different ways of going about disabling ACPI.

To disable ACPI in the BIOS before you install any operating system:
1. Enter the BIOS setup by pressing "DEL" while booting.
2. Go to "Power Management SETUP".
3. Scroll down to "ACPI Aware O/S".
4. Using the "Page Up/Page Down" set to "No".
5. Save and Exit.

To disable ACPI under Windows 2000 or Windows XP install:
1. Run the Windows 2000/XP Install Setup
2. When you see the message "Press F6 if you want to specify additional mass storage devices....", press "F5"
3. When you get a list of options to choose from, select "Standard PC"

To disable ACPI after Windows 2000/XP is installed.
I do not recommend this, a clean install is always better. But if you still want to do it, here's how:

1. Go to Device Manager and select Computer -> Properties of ACPI PC
2. Click the driver Tab and choose Update Driver. When the wizard gets to the "What do you want the wizard to do?" page select "Display a list of the known drivers..."
3. Then "Show all hardware of this device class"
4. Then select "Standard PC"
5. Reboot the machine.

Be aware that when Windows 2000 restarts it'll redetect most of the hardware in your machine again and reassign IRQ's to devices.
Read The ACPI FAQ for more info.

Good luck.

Jan 14, 2003, 02:01 PM	#1
wilho DriverHeaven Junior Member Join Date: Jan 2003 Posts: 48 Rep Power: 0	Tweaks for latency? Wondering what kind of latency I should expect with system: kxDrivers Live! 5.1 TB1Ghz kt133a Default setting (23ms?) seems to work fine, but I found latency annoyin. Any lower setting gives random crackle to sound. Does anyone have any tweaks to help me?

Jan 15, 2003, 03:33 AM	#2
Daniel Drummond DriverHeaven Senior Member Join Date: Dec 2002 Location: Brazil Posts: 1,137 Rep Power: 0	Disable ACPI I used to have a similiar system to yours and I was able to lower the latency to 5ms in stand alone VSTis, 10ms in Cubase and 20ms in Cubase with 40 loaded tracks after I disable ACPI. I used Windows XP. Maybe you should try that, although it can get you in some troubles... Read a bit about it in the net. __________________ www.palcomp3.com.br/ed

Jan 22, 2003, 03:01 PM	#6
Daniel Drummond DriverHeaven Senior Member Join Date: Dec 2002 Location: Brazil Posts: 1,137 Rep Power: 0	via latency patch The Via latency patch didn't do any good for me. Disabling ACPI was really the way to go. It's not necessary for newer chipsets, but especifically with the kt133a it seems to do real good. Rembember that this tip is for windows xp users. __________________ www.palcomp3.com.br/ed

Jan 22, 2003, 03:28 PM	#7
randy s DriverHeaven Newbie Join Date: Dec 2002 Posts: 7 Rep Power: 0	Daniel Drummond ? Daniel, are you still useing two sound cards with the two different drivers installed - Creative & KX. Is it worth the trouble & could you give me a more detailed install procedure. Thanks randy s

Jan 23, 2003, 03:13 PM	#9
Daniel Drummond DriverHeaven Senior Member Join Date: Dec 2002 Location: Brazil Posts: 1,137 Rep Power: 0	Randy, I'm not using both sblive's right now because it really didn't give me any real advantages. I really don't need EAX for gaming (it's not that great). The only good thing about having two lives is to be able to record more channels simultaneously (line in + line in = 4 mono ins). And I don't need that. That's it. If you need more channels it is worth the trouble. Chaz, I don't know how you tried to disable ACPI but it is done inside windows (or at its installation) and not in the bios. And yes, you'll have to re-install all the drivers for all your devices. And you'll loose the ability to have the computer turned off automatically (atx power supply). Take a look at those links: http://www.tweakersasylum.com/Guides...x/00000001.htm http://www.musicxp.net/installing_tips.htm http://www.nemesysmusic.com/support/W2k_XP_Optimize.pdf http://www.timos-welt.de/cubase/xp_tips_e.htm http://www.kxproject.spb.ru/acpi.php?language=en 20. How can I disable ACPI? Depending on your scenario, there's different ways of going about disabling ACPI. To disable ACPI in the BIOS before you install any operating system: 1. Enter the BIOS setup by pressing "DEL" while booting. 2. Go to "Power Management SETUP". 3. Scroll down to "ACPI Aware O/S". 4. Using the "Page Up/Page Down" set to "No". 5. Save and Exit. To disable ACPI under Windows 2000 or Windows XP install: 1. Run the Windows 2000/XP Install Setup 2. When you see the message "Press F6 if you want to specify additional mass storage devices....", press "F5" 3. When you get a list of options to choose from, select "Standard PC" To disable ACPI after Windows 2000/XP is installed. I do not recommend this, a clean install is always better. But if you still want to do it, here's how: 1. Go to Device Manager and select Computer -> Properties of ACPI PC 2. Click the driver Tab and choose Update Driver. When the wizard gets to the "What do you want the wizard to do?" page select "Display a list of the known drivers..." 3. Then "Show all hardware of this device class" 4. Then select "Standard PC" 5. Reboot the machine. Be aware that when Windows 2000 restarts it'll redetect most of the hardware in your machine again and reassign IRQ's to devices. Read The ACPI FAQ for more info. Good luck. __________________ www.palcomp3.com.br/ed

Jan 20, 2003, 04:32 PM	#3
cooker20 DriverHeaven Newbie Join Date: Jan 2003 Posts: 5 Rep Power: 0	Had same problem myself - but the breaking point was 40ms for me - over that everything was crystal clear, under that I got clicks and pops. Haven't had a chance to try the tip mentioned previously in this thread (and i'm not even sure I understand what it's referring to), but any suggestions at all on how to lower latency would be appreciated. I don't think it should matter, but i will also mention that in the DSP I have the inputs in the prolog connected to asio0 and asio1 in the epilog, despite the fact that I saw other pages suggesting asio14 and asio15, but i couldn't get a signal in cubase on these, even after remapping the vst inputs. My setup consists of AMD Duron 1Ghz 392 M Ram Windows 2000 Pro Cubase Sx Kx version 5.10.0.3528

Jan 21, 2003, 09:34 PM	Thread Starter #4
wilho DriverHeaven Junior Member Join Date: Jan 2003 Posts: 48 Rep Power: 0	Check if you have "Pci latency timer" in your bios. If so, increase value - default is usually 32, I got 96 now and it works like a charm. 5ms without clicking You might allso want to try low latency patch, wich - I think - makes same thing. It didn't work for me though. Check http://kxproject.spb.ru/686b.php?language=en.

Jan 22, 2003, 01:56 PM	#5
cooker20 DriverHeaven Newbie Join Date: Jan 2003 Posts: 5 Rep Power: 0	The link for the low latency patch (http://download.viahardware.com/vlatency_v019.zip) seems to be broken - anyone know where it else can be gotten? Chaz.

Jan 23, 2003, 02:55 PM	#8
cooker20 DriverHeaven Newbie Join Date: Jan 2003 Posts: 5 Rep Power: 0	When i tried to disable acpi i got stuck in a boot loop - I tried updating my motherboard's drivers hoping it would let me disable acpi the driver update solved the problem on it's own. I still had the latency patch installed when I did it, so I don't know if it was just the driver update or the patch too, but either way I'm not changing anything now . ChAz