On Fri, 19 Oct 2007 19:51:51 +0200 Derek Holzer derek@umatic.nl wrote:
As for multitrack recording, why reinvent the wheel? PD->QJackCtl->Ardour with LADSPA plugins inserted in the tracks (or using JackRack) gives you everything you'd ever need for most situations.
I've happily streamed 12 or more tracks down to disk through Jack->Ardour. Create a multi-output [dac 1 2 3 4 5 6 7 8...] and wire these up to Ardour inputs in Jack, let Ardour sweat over the disk buffering, it does the job very well indeed.
I've had some trouble with hardware MIDI stuff before. Best to just send it directly to the parts of the patch you want, and not send it to a GUI fader onscreen.
Some possible solutions:
- Decimate the controller bandwidth. When you move a MIDI fader many fader
boxes flood the channel with far more CC data than is needed. If you use [change] with a [metro] and [float] you can just catch the start, end and timed (100ms) samples between a fader movement, then interpolate it with [line~] where you need a smooth signal rate control.
- Use OSC with an external MIDI-OSC bridge, it's just nicer. MIDI interfaces
generally uses a UART with one register and interrupt driven I/O, which is primitive compared to OSC on a buffered socket.
- Never go *through* a GUI slider in Pd. If you must have dual use of mouse
and fader box then rig up a "dual gang" display/control. If the data comes from the faderbox then it's routed directly to the control destination through a [float] and the slider is updated periodically. If the data comes from the slider then it updates the [float].
- Build a sperate mixer interface in C. I used Qt to hack together a
very simple mixer board that sends UDP packets to [netreceive], and that works a treat.
Working around PD's crap GUI is one of the big challenges. You're lucky you're on Linux, the problem is much worse for OS X users.
If I had my vote, we'd talk less about beer, political correctness and world politics, and focus more on fixing this kind of stuff...
best, derek
Kuba Szczypek wrote:
Thank you Phil
Yes I have ram disk ready for use. What about play some music, adding effects and write it to hard drive in 8 tracks simultaneously? Since ram disk has limited capacity it must be written to hard drive. Then probably it will cause drop audio.
But my main problem now is related to understanding why I can do something by fader on screen without drops, and when I use fader on hardware MIDI then it give me hangs and drops.
Also I`m waiting for input from anyone who know PD and MAX and can give a comparing, with focus on possibilities to create complete audio (or video) tool, not only for learn and fun, but also for using.
I`m would like to have base in pd or other program who can give me this possibilities.
Of course I can be wrong, and you may suggest me (for example) to use external sequencer, external multitrack etc.
I seen on cycling`74 web page that they now recommending Ableton Live for sequencing. Question is why: because marketing or because MAX is too bad.
The same question I have related to pd. Please forgive me if I have not elegant form, but I have bad english and I`m frustrated too long (by drops audio).
Best regards, Kuba
-- derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista ---Oblique Strategy # 42: "Destroy -nothing -the most important thing"
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