I just got my Quad Capture today and I'm having a tough time with latency (~31ms). I have no idea what I'm doing wrong. Here is my setup: Windows 7 64 bit intel i7 740 quad core 1.76 ghz 6 GB DDR3 RAM 5400 RPM HDD running the quad capture into a USB 2 port. I've tried the ASIO drivers (ASIO4ALL) and the drivers it comes with, but both have high monitor latency. Any suggestions?

I buyed a Roland UA55 Quad Capture and I have the same problem: very high latency, about 30 ms. and over. I have installed ASIO (ASIO4ALL) driver too but latency remain high. It is inusable.
My setup is W7 32 bit, Intel Pentium dual core 2,8 gHz, 4 Gb RAM, 2 Hard Disk SATA in RAID 0 mode, ASUS motherboard with integrated audio board and RealTek audio driver.
With this setup (without Quad Capture) SONAR X1 Producer runs well; latency about 5 ms.
Any suggestions for me too?

I have absolutely no idea what you are doing wrong.  I run mine on 64 sample buffers all the time.  Which measures given a 48,000Hz sample rate, FULL round trip latency at 7.2ms here.

Firstly remove any trace of ASIO4ALL you don't need it with the Roland driver in fact it will force the WDM driver into use.  Not what you want.

You need to set the buffer latency from the Driver Settings to a lower latency than it sets up by default.  Make sure you Audio driver setup in Sonar is setup to use ASIO drivers.  It's important to use ASIO with the Quad because it uses VS streaming in that mode.

Also check you have the latest (1.5) version of the Driver although I didn't have any problems with v1.0.1 of it either.

Make sure any onboard audio device is disabled from your BIOS also, at least until you get the Quad setup nicely.

Good luck.

Is 64 samples the lowest you can go? (wich is still awesome...)

I'm gonna pick up my Quad capture later, hopefully have enough time to set it up this sometime week, shall post my result later.

Here is my result : Win 7 64 Home, i7 2600k, Intel motherboard, 16g mem.

Note : there are some digital noise problem (more at the end).

Sampling Rate : 44100
Buffer size : 64 samples, 1.5 msec

Asio reported latencies
Input  : 6.0 msec, 264 samples
Output : 3.4 msec, 152 samples
Total Roundtrip : 9.4 msec, 416 samples

Sampling Rate : 44100
Buffer size : 48 samples, 1.1 msec

Asio reported latencies
Input  : 5.6 msec, 248 samples
Output : 3.1 msec, 136 samples
Total Roundtrip : 8.7 msec, 384 samples

---------
Sampling Rate : 48000
Buffer size : 64 samples, 1.3 msec

Asio reported latencies
Input  : 5.5 msec, 264 samples
Output : 3.2 msec, 152 samples
Total Roundtrip : 8.7 msec, 416 samples


Sampling Rate : 48000
Buffer size : 48 samples, 1.0 msec

Asio reported latencies
Input  : 5.2 msec, 248 samples
Output : 2.8 msec, 136 samples
Total Roundtrip : 8.0 msec, 384 samples


---------

Running Cori Yarckin demo seems fine at 48 samples (I'll probably set it back to 64 samples, 44100 rate).

In comparison to my previous Phonic Firefly 302 firewire interface, the lowest Roundtrip is stable around 17 msec, at buffer of 128 samples, which is a huge improvement. Edit : Re test Phonic, got better result (48 samples) :

http://forum.cakewalk.com/tm.aspx?m=2582602

However, the biggest problem now is I can hear a clear but soft and constant digital noise.....<deleted>


Edit : Noise problem solved :
http://forum.cakewalk.com/tm.aspx?m=2577094

Muziekschuur at home


Is 64 samples the lowest you can go? (wich is still awesome...)

No 48 is the lowest.

I just keep it at 64 so I don't have to mess with it between tracking and mixing.

Measured (actual) round trip is 7.2ms at 48kHz at that buffer size.

I was checking out the Quad control panel with the "reduce cpu load" turned on.

My previous round trip latency at 9.4 msec (64 samples / 44100 rate) is now down to 7.6 msec.

Running at 48 samples, further improves the round trip latency to 6.5 msec.

Is everyone running Quad / Octa with the "reduce cpu load" turned on ?

Jonbouy
I have absolutely no idea what you are doing wrong.  I run mine on 64 sample buffers all the time.  Which measures given a 48,000Hz sample rate, FULL round trip latency at 7.2ms here.

Firstly remove any trace of ASIO4ALL you don't need it with the Roland driver in fact it will force the WDM driver into use.  Not what you want.

You need to set the buffer latency from the Driver Settings to a lower latency than it sets up by default.  Make sure you Audio driver setup in Sonar is setup to use ASIO drivers.  It's important to use ASIO with the Quad because it uses VS streaming in that mode.

Also check you have the latest (1.5) version of the Driver although I didn't have any problems with v1.0.1 of it either.

Make sure any onboard audio device is disabled from your BIOS also, at least until you get the Quad setup nicely.

Good luck.

Sorry, I know this is an old post
 
Could someone explain what the difference between AISO4ALL and AISO drivers are because this makes no sense. On one hand you say to delete anything to do with AISO4ALL and then you say "It's important to use ASIO with the Quad" as far as I know they are one and the same, what am I missing??
 
Thanks!
 
Eric

ASIO4ALL is a piece of software which wraps WDM drivers and emulates an ASIO driver. ASIO4ALL has been reported to interfere with real ASIO drivers when installed on the same machine. This is why the recommendation to removed ASIO4ALL when using an interface with a real ASIO driver.