[LAU] Large live recrodings ?

[Svend-Erik Kjær Madsen]

Hey the gig went pretty well.

And the recording was superb with jack_capture, I used 9 channels smooth
and easy.

Now I'm so pleased with my Multiface though it's just a Steinberg
AudioLink 96 Multiset, I don't regret the money I spend on it, that's
foe sure. And now I'm pretty confident with the thought of selling out
my ADAT's and only use my notebook or my stationary computer for music
recording.

/Sv-e
tor, 03 07 2008 kl. 08:28 +0200, skrev Svend-Erik Kjær Madsen:
> Hi 
> 
> I'm no techie but isn't the calculation regarding how fast your harddisk
> must be quite simple, if we assume working in 44100KHz ?
> 
> A normal CD delivers 150Kb pr. second and its two tracks, so storing
> multichannelrecordings in 44100 must be something like 75Kb per second X
> times as X is the number of tracks.
> 
> I have no doubts that my Lenove T61P with sata disk can store more than
> the 75Kb * 18 my RME Multiface offer, else the thing is broken.
> 
> /Sv-e
> ons, 02 07 2008 kl. 21:20 +0200, skrev David Forsyth:
> > Date: Wed, 02 Jul 2008 13:38:11 +0200 (CEST)
> > From: "Kjetil S. Matheussen"
> > 
> > David Forsyth:
> > >> 
> > >> At this point, I'd be happy to do an 8 track recording.  For
> > >> important live recordings I would not use a laptop, but instead a
> > >> decent desktop with a RAID 0 array of at least 3 SATA2 disks for
> > >> the audio files, with the system on another disk.
> > >> 
> > 
> >  >I think that is complete overkill. I just tried recorded 128 channels 
> >  >of 32bit/44100hz at once, without problem. And my machine is 5 years 
> >  >old 2Gz barebone, using only a single PATA ide disk.
> > 
> >  >This was using jack_capture, and only recording silence (ie. 
> >  >non-connected jack ports). Maybe the silence makes a difference.(?)
> > 
> > I think you're missing all the interrupts that would happen if your 
> > audio hardware was sampling and sending data to the jack ports.
> > and then the conflict between the PCI transfers of that data and the 
> > DMA->PCI transfers to disk...
> > 
> > I had trouble with my 8 channel setup until I sorted out the SATA 
> > settings.  I still say that for a large important (one chance) recording 
> > I'd use more hardware than a laptop can supply, even if I have to hire 
> > it or assemble it specially for the show.
> > 
> >  >256 channels did not work very well though.
> > 
> > heh (-:
> > 
> 
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