[PD] PD on a laptop??

Ivica Bukvic ico at fuse.net
Wed Oct 24 03:16:45 CEST 2001


This is an issue that has been plaguing most of the laptops on the market
and comes in two flavors:

1) "a ground loop" -- solution: get a hum eliminator from Radio Shack (in
the US it would be 60Hz, in Europe 50Hz), but otherwise very hard to root
out
2) Too much circuitry crammed in small space = interference (esp. when your
battery is being recharged by external power supply). On my Inspiron 8000,
there are two solutions to this:
a) Use battery-only while doing sensitive audio stuff
b) Use external power WITHOUT battery

Since you have Inspiron, you can always buy an additional battery and plug
it into the media bay, so that should give you 5+ hours of work which should
be sufficient for just about anything :-)

Hope this helps!

Ico Bukvic, composer & audio designer
http://ping.ccm.uc.edu/~ico/
ico at fuse.net
============================
"To be is to do" - Socrates
"To do is to be" - Sartre
"Do be do be do" - Sinatra
"I am"           - God



-----Original Message-----
From: eliselaptop [mailto:e.chohan at uea.ac.uk]
Sent: Tuesday, October 23, 2001 7:57 PM
To: pd-list at iem.kug.ac.at
Subject: Re: [PD] PD on a laptop??


I'm also running PD on a laptop, but does anyone ever get any interference
when the power supply is connected?

It doesn't occur if I plug straight from phones socket to an amplifier, but
I've recently started using a little mixer.  When I'm plugged into this, and
my power supply is connected, I get pretty bad interference noise, which
only stops when I unplug the power to my laptop.  I've tried plugging it
into different wall sockets, even on different fuses, and also making sure
none of the wires cross over, but to no avail.  The drawback to this is that
I can only work closely on sound for as long as the battery lasts!

I have a Dell Inspiron 2500.

Also, does anyone run a duel boot Linux / Windows on a laptop for PD - I am
considering it simply to have access to the different externals available (I
have only very basic Linux knowledge, with a friend offering to set this up
if I decide it's worth it!)


Many thanks,
Elise.


----- Original Message -----
From: "Jim Ruxton" <cinetron at passport.ca>
To: "nullpointer" <nullpointer at odessadesign.co.uk>; <pd-list at iem.kug.ac.at>
Sent: Wednesday, October 24, 2001 12:21 AM
Subject: Re: [PD] PD on a laptop??


> Hi Tom,
> Thanks a lot. This info. is a big help. Had to lug my desktop around again
> today and tomorrow so getting this info. is inspiring me to go shopping.
> ciao,
> Jim
> > Hi Jim,
> >
> > I use WinMe on a toshiba satellite 2800-400
> > PD runs fine except for the strange edit lock that seems to happen on
> > windows machines..
> > (just close the patch and reopen it to allow editing again...)
> > I use a midiman usb 2x2 midisport box for midi, although the timing
isn't
> > great (more windows than the usb I think) it's useable with a bit of
> > tweaking...
> > As for soundcards.. my advice is just to use your onboard card fo the
time
> > being cos it will pretty much gurantee compatibility with pd and wont
hog
> > any extra cpu time..
> > Externals.... theres the wami box, the digigram pocket and the almost
> > mythical (here in UK anyway) hammerfall laptopcard... I've heard bad
stuff
> > about all of them so I'd suggest getting a trial run (return offer on
the
> > hardware e.t.c.) before you commit..There a new motu firewire unit thats
> > sposed to be god,but i haven't got firewire so...
> > anyway.. i hope this helps..I've done quite a few performances, just
using
> > the phones socket, and to be honest on an average PA in an average room
> you
> > don't notice the quality level at all.
> >
> > oh and as far as video cards go .. most newish laptops come with savage
> > video cards (OK) ATI cards (OK again) or NVIDIA geforce (brilliant),
they
> > all have decent opengl drivers i think although the nvidia card is kinda
> > geared towards T&L systems like DX..
> >
> > Tom
> >
> > http://www.nullpointer.co.uk
> > http://www.dividebyzero.org
> > http://www.orphanrecords.co.uk
> > ________________________________________________________
>






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