i vaguely know the theory. I need to use two channels of noise, on in inverse phase from one another and use a tight eq on one side, which should reproduce tightly banded noise of my selected EQ width.

can anyone help? i’ve said it before, i am pretty new to max/msp and dont really know which objects to use.

if anyone has any simple patchs that they think might help, my email is

psc.recordings@gmail.com

cheers

I’ve done work in this direction in w/Litter Power (of course).

The current status of this particular object can be described as
“advanced beta testing”. A few people have worked with the external,
in fact a CD has just been released using it. But there are some
gotchas I want to iron out before unveiling it to the world.

Still, you find some useful things the Litter Power online
information. URI below.

Beset — Peter

————– http://www.bek.no/~pcastine/Litter/ ————-
Peter Castine +–> Litter Power & Litter Bundle for Jitter

iCE: Sequencing, Recording & |home | chez nous|
Interface Building for |bei uns | i nostri|
Max/MSP Extremely cool http://www.castine.de

http://www.dspaudio.com/

I don’t know flash at all, but regarding Max, have a look at the
forbidden planet in the examples folder I think. Its fun with
(a)bandened noise…

Stefan

–

[][] [][][] [][] [][][]
[][][][][][][][][][][][][][][]

Stefan Tiedje
Klanggestalter
Electronic Composition
&
Improvisation

/~~~~~
\ /|() ()|
))))) )| | |( \
/// _/)/ )))))
___/ ///

————————-x—-
–_____———–|———–
–(_|_ —-|—–|—–()—-
– _|_)—-|—–()———–
———-()————x—–

14, Av. Pr. Franklin Roosevelt,
94320 Thiais, France
Phone at CCMIX +33-1-57 42 91 09

look at the rand~ help file…

All the best

Alessandro Fogar

The Starter Pack gets you brown and pink noise, triangular dithering
noise, and an ultra-efficient 1-bit noise source is coming in the
next release. Plus some highly useful random number generators and
much other stuff. Of this, the signal degrader (lp.nn~) and one
chaotic model (lp.poppy~) just might prove useful in your project.
But maybe not as direct a help as lp.epoisse~ (coming soon) or rand~.

On the whole, I would always recommend downloading the Starter Pack.-)

> I cnat get litter power, for i am a broke student.

I aimed to price Litter Pro affordably for both Starving Artists and
Impoverished Students. It’s less than $1 per external. Hope you can
rise from broke to merely impoverished soon. (Believe me, I have been
all of the above.)

Maybe your school should sign up for a lab license?

Best,
Peter

–
[Please cf the .sig from my previous post on this thread if you need it]

would i simply use one noise object routed for two channels. oen with a delay line (delay~ ?) to knock it out of phase and an EG to get the band i want (object?)

or is there a more direct method?

well i did (and do) what you describe (if I understand it well) using
very narrow (or not so narrow, depending of the ambitus I am after)
resonant filters

cnmat’s resonators~ work very well

band pass filters are of course another possibility, those made by
FFT~ are great as well (brickwall)

is this what you need??

kasper
–
Kasper T. Toeplitz
noise, composition, bass, computer

http://www.sleazeArt.com

ideally, i want to create a system i can affect in real time

does this fft~ require the methodology i explained above? or does it work as an accruate ‘brickwall’ band EQ?

directed by Dan Trueman and Perry Cook

Tuesday April 4, Richardson Auditorium, Princeton University, 8pm

The Princeton Laptop Orchestra (PLOrk) is a new ensemble of 15
laptopists, each seated on a pillow with a 6-channel hemispherical
speaker and a variety of control devices. This premiere performance
will include works by Paul Lansky, Brad Garton, Curtis Bahn and Tomie
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Wang, with special guest performances by renowned tabla virtuoso Zakir
Hussain, accordian legend Pauline Oliveros, and the hot percussion
quartet So Percussion (who will be processing Hussain in real-time).

Tickets $10, $6 students (free with Tiger tickets).
Call 609-258-5000 or visit http://www.princeton.edu/utickets

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once you filter i don’t really see the use of pahse reversal – it might be me

but for what you describe, please, see the help files for resonators~
(and other cnmat objects)

kasper

The Fourier approach can give you as “truly” a brick wall as
anything, but is limited to the bandwidths defined by the Fourier
Transform bins.

Lots of people have done this. Again, cf Forbidden Planet and play
with that.

The rand~ examples and lp.epoisse~ take another approach to a kind of
frequency-banded noise. I honestly don’t know if they’re what you’re
after. Don’t hurt none to try at least rand~.help.

The EQ thing you’re describing sounds buildable with a couple of MSP
objects (delay~, filters of your choice, etc.).

It’s probably time to get the tools cracking and see what you can build.

– P.

[Please cf the .sig from my previous post on this thread if you need it]

It’s a crossover, so two of these in series will provide a brick-wall bandpass.

If you can wait until tomorrow, I can post a patch I made that does it.

Adam

well for this job fft would not be wrong.
opne of the examples in the example folder is
an fft eqqualizer .. you can easily (well..)
make up your analyzer from that.

but forget the idea of “phaselinear brickwall
equalizer”, this job would be far too CPU
intensive for todays computers.
and you do not need it all all for your human
voices experiment.
voices will not result in big offsets (like 24 db)
in adjacent fft bands when you use, say, 128 bands.
what is more useful is making enough fft bands,
like 2048 or more.

-fft 110

But every time I see this subject line in my Inbox, I invariably read it as
“Brandied Noise”, which sounds oddly delicious.

:-

that would be fantastic. tomorrow (well, its 4am and i’ve just finished work) was my day earmarked to begin drawling through all the suggestions here

thanks to everyone so far, most enlightening thread, so proud i started it ;)

f.e

I guess tomorrow means tomorrow, not today. Sorry, got stuck on some other things. But by Sunday, for sure.

However, now that I understand better what you want to do, I’m not sure my patch will do it. tl.crossover4~ isn’t meant for realtime frequency shifting — Depending on the settings, it causes some noticable audio glitches when sweeping frequencies. Also, using two of them to get a band-pass filter is cpu intensive.

But, I’ll post the patch anyway.

Adam

http://www.hellbender.org/programming/brickwall_bandpass.zip

Requires tl.crossover4~, but Trong Lossius.

bandpass_stereo~.mxt is the parent patch, start with that.

Adam