On Tue, 2003-09-30 at 06:40, Mark Knecht wrote: > Steve and Christian, > Thanks for the feedback. Possibly this is an HDSP type bug, either in the > complete family, or in just the HDSP 9652. In the cold light of the morning > I wonder now why I didn't reboot my newly constituted Reaktor Session > machine back into Planet CCRMA Redhat and try it there, so I'll do that this > evening. That machine uses a Hammerfall Light. > > I hope one or two HDSP type users (Patrick? Jesse?) Might run by this web > site and listen to Absynth 2. It's not a bad way to spend a couple of > minutes anyway. > > It would actually be a positive outcome (I think) to find it is only the > HDSP 9652 since then I could focus on just working to get that fixed. > > Thanks very much for your help. > > - Mark > > Hi all, Small update. In my case the 'weird glitchy noise' appears to be the HDSP 9652 changing sample frequencies. My system is set up with the 9652 as the Master clock device and a frequency of 44.1K. It's ADAT1 output and input go to an external A/D/D/A that runs at 48K unless it receives a different sync frequency. Normally everything syncs up and runs at 44.1K in this configuration. The first thing I found that seems like a bug is that when I change the sample frequency of the card using hdspconf from 44K to 48K I get the same ugly noise. It seems to me that something should be done in the driver so that when clock frequency is change the driver would ensure that these noises do not happen. The second thing I noted was that when I browse these web pages that cause the noise problems, the ADAT1 input sync/lock indicator in hdspconf changes from sync to lock and back to sync. I'm guessing that something is changing the card's frequency from 44K to 48K. (Flash possibly? Or something weird in the driver?) The third thing I noted, which seems pretty weird, is that if I set the card up to be master but run at 48K, then when I browse these web pages the noise happens and something changes the card's base rate back to 44.1K permanently. That seems quite wrong. I really don't want anything messing with my frequency settings on a permanent basis, but something is. I'm hoping that someone else running a card in the HDSP line can pull up hdspconf and see if any of this happens with your system. Possibly you won't see it unless you have a similar, external bi-direction A/D/D/A that wants to run at 48K, but maybe you'll spot somethign happening on the sync indicator that's similar to what I'm seeing. Thanks, Mark
