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Looper's Delight
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My personal experience tells me that PCI is always faster than USB or Firewire. i guess it's just closer to the CPU that way, less conversion going on. wether we like to admit it or not A to D is a conversion step and firewire/usb to whatever app is also a conversion step. same on the way out. and using PCI seems to minimize the middlemen conversion steps. As far as USB vs. Firewire..... i think sharing is a big problem. Firewire drives on the same bus as the interface, or even keyboards, mice, etc... on the USB. It's news to me (but not a surprise) that the mac USB 2 implementation is dodgy. I have never had good luck with low latency using USB2 interfaces on my macs. - b On May 25, 2006, at 6:05 AM, Per Boysen wrote: > On 25 maj 2006, at 10.58, Rainer Thelonius Balthasar Straschill wrote: > >>> Also, some audio interfaces don't perform so well if MIDI cc >>> data is shuffled through its MIDI in/out port (as is the case >>> with my RME Multiface >> >> Could you elaborate a little more on that? What do you have to do >> specifically on the MIDI ports to get which effect on the audio >> ports? As I >> do own a Multiface, I'm somewhat curious... > > > Using MIDI expression pedals or faders to send MIDI cc data through > the Multiface built-in MIDI port sometimes creates crackling > artifacts in the audio. This problem is still around with the > latest OS X drivers but in my own praxis I solved it long ago by > going out to buy a cheap USB MIDI interface, thus leaving the > Multiface to handle audio streaming only. > > I have not used the Multiface MIDI ports on Windows XP, so I can't > tell if those drivers have the same issue. > > >> Beware however, from what I've read, the USB2 implementation on >> Macs is faulty, resulting in an effective USB2 performance of >> about half the >> Firewire 400 data rate. > > Thanks you, that's important information! I didn't know about that > but, I have had a certain impression that my firewire drives work > as good over USB2 as over FW when I pop them into my PC. On the Mac > I usually feed them from the FW800 port. > > I once tried an USB audi interface on a Mac and it was so bad that > I brought it back to the store and got my money back. Maybe it > should have worked better if I had tried it on a PC then? > > Greetings from Sweden > > Per Boysen > www.boysen.se (Swedish) > www.looproom.com (international) > http://tinyurl.com/fauvm (podcast) > > > >