Edirol UA 25 Ex clipping when recording

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Member Since: Nov 18, 2009

Hi! Would most appreciate help with this please!

I just bought the Edirol Cakewalk Roland UA 25 Ex USB interface and am having the following problem:

- I am using Reaper to record my guitar and it keeps jumps the beat, and when I play it back it sounds clipped and is full of pops. Playing back other things is ok.

- I tried maxing out the buffer and prioiritizing recording rather than graphics etc, and it's a bit better but still pops and distorts.

- I've been using it on the "advanced" setting (a switch on the back of the unit) that uses the UA 25 Ex driver, and have set reaper to ASIO for input/output. Actually, come to think of it I haven't tried it on the off position and just the soundcard driver, but I want to take advantage of 24-bit recording etc.

One problem may be that my PC is too slow (1.77Mhz Centrino, 512 RAM), could that be it, or is it something else?

Thanks!

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Czar of Midi
Administrator
Since: Apr 04, 2002


Nov 18, 2009 07:25 pm

Although Reaper is a very good program for running on slower PC"s that might be your problem if you can't get it running with the buffer set to a high setting.

Is the Driver you installed an ASIO driver for certain? That as well could be an issue. But if it show's up as ASIO in Reaper then it should be the correct one.

Are you running a bunch of pluggins at the same time as well?

Member
Since: Nov 18, 2009


Nov 22, 2009 04:21 pm

Hi,

Thanks for the response!

I don't have any pluggins switched on when I record, just the guitar through the interface.

The driver that shows up is the correct ASIO one. I've tried the default soundcard drivers too and no luck.

I tried recording with the advanced mode off and just my soundcard driver at 16 bit but it still pops and distorts, though it's a bit better than.

If this is a slow computer issue then that would really suck, as I can't afford a new PC now :(

Czar of Midi
Administrator
Since: Apr 04, 2002


Nov 22, 2009 08:33 pm

You should still be able to use ASIO even switched to 16 bit mode. I am thinking that most of the problem is going to be the Centrino with only 512 meg of RAM. Although the CPU is of a decent speed the Centrino was a bit different in how it used the core it had.

If it is at all possible I would honestly try to upgrade the RAM to at least 1 gig. Ram for that PC should be pretty cheap now and it would be a good thing to try as most of the recording software uses up a lot of RAM wen recording.

I would first try using the ASIO driver in 16 bit and try setting you buffer to around 512. If 512 works then try 256 and see if that will work. If not then your out at 512, which really only messes with the latency when recording. On playback it will be fine.

Member
Since: Nov 18, 2009


Nov 25, 2009 03:21 pm

Ok, I tried at 16bit and high buffer, and it was a bit better, it records ok most of time just when playing back it distorts and i have to restart the track. It must be too much for it to process.

I'm going to look into getting more ram.

Thank for the assistance!

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