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With all the stuff you want to do, the approach is to use a VST host
plus several plugins to do the stuff you like.
First question is the host: there are the sequencer-based solutions -
Steinberg Cubase/Nuendo (the latter only mentioned for completeness, as
it most probably is too "professional" for your application), Sony
(formerly Sonic Foundry) ACID, Ableton Live! - did I forget anything?
Then there are the more modular setups - these are basically
applications which allow to freely connect VST (and sometimes VSTi)
components and route your ASIO and MIDI interfaces to and from them and
use automation. I can think of two right now, AudioMulch and Plogue
Bidule. I have been working a little bit with AudioMulch and it's a
great tool - most of the really professional people seem to go for
Bidule.
Then, you do all the effects (including loops and sample triggering)
with VST(i) plugins. Live! comes with an acceptable sampler for your D)
requirement, as well as some "normal" delays and a cool and flexible
reverb which allows from normal up to completely whacked (I think Per
here makes great use of it...).
The plugins...do a search for "free VST plugin" to get an overview on
the freeware/shareware/donateware stuff. The most powerful looper (for
the PC) is afaik Mobius (basically eight brother-synced EDP pairs), then
there's LloopyLama (a syncable DL4) and AngstroLooper. There are TONS of
crazy effects on lots of sites - smartelectronics.com would be the first
one which comes to (my) mind, but just do a search on the web - they are
easy to find.
So the "least number of components used" solution for your requirements
might be Live! plus Mobius.
Latency is in fact a function of the power of your computer, the other
major influence being the interface hardware you use. It works some like
this (hey, everyone here - please correct if this is bullshit): First
you have a static latency caused by the interface which brings the audio
data stream into your computer. This is an idependent value for input
and output. Then, your ASIO driver layer uses input and output buffers
to allow your application a certain freedom when serving the inputs and
outputs. Bigger buffers means more latency. Smaller buffers means more
strenuos requirements on how often (and how regularily) your application
serves the input/output task. Some applications allow you to set the
priority of these tasks (high priority here means less performance
available for your creative tasks). And of yourse, the "power" of your
computer plays a role here. Interface-wise, the stuff by RME has earned
a great reputation with regard to low-latency (haven'd tried their
devices myself - yet).
The simple rule goes like this: Get a good interface, set your ASIO
buffers short, set the I/O tasks to high priority, then your latency is
very low - but you need a fast computer to still be able to do something
useful.
Rainer
-----Ursprüngliche Nachricht-----
Von: Romain [mailto:rtristelune@yahoo.fr]
Gesendet: Freitag, 10. Juni 2005 22:34
An: Loopers-Delight@loopers-delight.com
Betreff: Re: Building A Sampler/Looper around a barebone computer.
Thanks for the tips. I was interested in Linux because
I believed it could be good in the looping department
regarding latency...but Windows might be as good if
you tune it, and as you said, there is more available
audio software.
What I expect to get is:
A) A simple and good quality live looping. I mean for
example, I press button 1 on the foot controller,
record let's say a guitar rythm, and if I press button
2 the rythm plays along, and if I play button 3, the
loop is saved but no played + some tricks about
quantization => the sample would be cut nicely, not in
the middle of 2 beats !!
+ ability to play stop the recorded loops
independantly
B) Some good delays and reverbs, switchable via foot
controller
C) Weird FX (bit-crusher, octaver) switchable as well
D) Ability to trigger some pre-recorded samples as
well.
I guess I can achieve this with little latency on a
pretty small computer with windows OS if I tune it for
music only.
--- Jeff Larson <Jeffrey.Larson@Sun.COM> a écrit :
> Romain Rochas wrote:
> > 3)- A pedal board => should be plugged directly
> via USB or Via a
> > MIDI->USB interface (Midiman) (any suggestions ?)
>
> Behringer FCB 1010 with any single port MIDI->USB
> interface.
>
> > About software, I need:
> > 4) - a live processing main software which can
> loop and which can map
> > the pedal actions to actual sampling/processing
> command
>
> Well, this is a rather large topic that is discussed
> at least
> once a month here and on many other forums. If
> you're determined
> to use Linux you should explore some forums devoted
> to Linux audio
> applications. There are some good Linux looping
> applications such
> as SooperLooper and Freewheeling, but in general I
> think you will
> find that there aren't many choices unless you are
> willing to write
> your own software. By far the majority of audio
> applications run
> on Mac or Windows.
>
> > The idea will be to have the audio main
> application being launched at OS
> > startup, so I would'nt even need a screen (could
> display the presets
> > info on the pedal board ?)
>
> I doubt you will be able to do this without a
> screen. Even dedicated
> hardware devices have LCD's and LED's to give you
> some idea of what
> is happening. There are no pedal boards that I'm
> aware of that display
> messages sent to it by the computer.
>
> If you were more specific about exactly the kinds of
> looping/sampling/fx
> functions you want you may get better advice. But
> unless you can find
> what you need on Linux or are willing to invest many
> months of time writing
> your own software, you will be better off buying a
> cheap Windows laptop
> or Mac Mini, learning about VST plugins, and
> exploring the very large world
> of audio software for those platforms.
>
> Jeff
>
>
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