Been there, done that. >From what I tried here, I think it is an Audacity problem. I don't get the da-da-da-syndrome you get, but something similar. The problem occurs when trying to mix more than 5 channels succesivly. At this point, I get some kind of small delay in between the left channel and right channel, resulting in a ""wider" stereo-sound. 20 seconds later, audacity starts dying. Some kind of synchronisation problem I guess. Also I noticed an excessive use of the swap-file. (Is it normal to have +1gig swap used with about 20 minutes of sound put in audacity?) I'm using the latest sound-rpms from Thac. (Should this be anounced on this list, or better, do the audacity-developpers know they have a problem (I think)?) Moeflon (powerdesktopuser without programmingskills :-p) (MDK 9.1 (clean install) , P3 750, 384ram, ext3 for / & /home) On Wednesday 07 May 2003 11:13, Daniel James wrote: > We've done our first night of testing with the Delta 1010, with mixed > results. The hardware is: > > Asus P4PE motherboard (Intel 845 chipset) > Pentium IV 2.4B (2.4GHz, 533MHz FSB) > Seagate Barracuda IV 80GB > M-Audio Delta 1010 (IRQ 9) > Matrox G550 Dual DVI (IRQ 10) > SB Live (IRQ 11, for soundfonts in hardware with external MIDI > keyboard) > All other hardware disabled in BIOS (USB, serial ports, parallel port, > onboard sound etc) except for Broadcom onboard LAN sharing IRQ 9 - > configured, but disabled for recording session with: > > ifconfig eth0 down > > cat /proc/interrupts > > now shows only Delta 1010 on IRQ 9 > > Software: > > Linux Mandrake 9.1 upgraded from 9.0 > Multimedia patched 2.4.21-pre kernel > ReiserFS filesystem on / and /home > ALSA upgraded to 0.92 with Cooker RPMs > envy24control compiled from alsa-tools 0.93 tarball > wxGTK 2.40 compiled from tarball > Audacity 1.1.3 compiled from tarball > > With the Delta 1010 and two input tracks selected in the Preferences, > it all works fine. Four input tracks also works. Select eight input > tracks and it works fine initially, but after a while something weird > happens to the recorded input - I've never seen this behaviour with > Audacity in any other context. > > Suddenly the waveform is drawn as a rapid series of the same shape. > Playing the track back, it sounds as it looks: > > da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da-da- > > Can anyone replicate this bug, if it is a bug? With full duplex > enabled, it was even more flaky. I did compile Audacity before the > upgrade to Mandrake 9.1, so this may be related. On another computer > with just a normal two-channel soundcard, Audacity can dummy 'record' > eight channels in full duplex without problems, but then it isn't > actually doing much work. > > Next, we're going to try Thac's RPMs of Audacity 1.1.3 and at least > one other multichannel recorder app to see if this is my lack of > compilation skills, a system problem or an Audacity problem. > > Cheers > > Daniel
