Archive for the tools Category

Computers are already visual, we just forgot

Posted in culture & media design, tools on January 8, 2014 by visualraccoon

“No, no, you don’t understand! Computers are basically about binary numbers and then we program them by putting layers on top of the raw binary to finally display text and visual images.”

Bullshit. Computers are really about spatial patterns of voltage storing elements which we then interpret as bits in the binary system.

When a computer is designed, somewhere some guy has a big chart on his wall showing the mapping from the spatial pattern into bits.

Which probably started out as a diagram on a white board which was erased many times before they had the bit storage elements far enough apart to prevent heat confounding.

cmos-screen-capture2

So the computer started out as an analog map on somebody’s wall.

Computers are inherently spatial and then we cover it up.

Digital “ones and zeros” are an abstraction! Just a way of interpreting spatial patterns of voltage differences. Probably goes back to Alan Turing and his machine. And the damn tape, so easy to interpret in the bitwise way (great work on Enigma, Al, but the tape is crap).

Imagine instead if back at that crucial time in history someone had used the far more powerful* and already positional lambda calculus of Alonzo Church to directly interpret the spatial patterns and compute with them.

Then computers would also be usefully and overtly analog computers. That is, electrical computers would be analog computers (which they already are (so deep is the mis-thinking it perverts the very terms of our discourse)).

If only. And then you wouldn’t have to be reading this silly diatribe. And visual thinkers wouldn’t exist in a world of pain when they try to use computers let alone program them.

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Q: OK, but is spatial the same as visual?

A: Well, close enough for a rant. You bet.

Consider a creature who can see into the infrared really really fast and really really small. That guy can watch the patterning of the bit storage elements in real time as they are read and written.

* Q: Since Church and Turing proved that the lambda calculus and turing machines are both universal computational engines, how can the lc be more powerful?

A: Usefully powerful to a human. Whenever someone says some system is “Turing-equivalent”, it means you don’t want to have to actually use it for anything.

World without guitars

Posted in culture & media design, tools on June 19, 2012 by visualraccoon

World Without Guitars is just like our world, only guitars (and related string instruments) were never invented. It serves as a control reality for those undertaking the physical design of new instruments. And also as a cautionary tale for those tackling the necessary concomitant social engineering in order to bring about the cultural acceptance of a new instrument.

Our hero Guitar Boy is visited in a dream by the inter-dimensional ghost of Stevie Ray Vaughn. GBoy is a superb craftsman/electronics guy, and so he makes a Strat-like guitar (yes, and amp to go with it, OK?). Then he shows off his new instrument at MakerFaire. Of course, he can’t actually play it himself beyond plucking at a string and getting a note. Or, occasionally, he remembers the one chord ghost SRV taught him, which brings his left hand into play to modulate the effect of a pluck. Not real impressive, but a totally convincing demo in the eyes (and ears) of GBoy. He’s ecstatic, and very hopeful to boot.

Now he knows plucking a note isn’t the same as the music he heard SRV play in his dream, but he assumes if passersby have heard one note, then they will be able to imagine more than one, and played in a pleasing sequence.¬† He assures them, “Oh, don’t worry, people will be able to learn to play it really fast, and the result will be wonderful!”

Ha.

No deal. No one is buying.

It doesn’t matter what he says, nor how pretty the so-called ‘guitar’ he made is, he always gets the same reaction: “No one would be able to play that thing.”

“No human could ever learn,” they go on, “to play that ‘guitar’ in the way you describe, coordinating the so-called ‘chording hand’ with the ‘picking hand.’ And doing that ‘picking’ at the rate of five or ten notes per second? Are you insane? People’s hands and brains just don’t work that way.

“Besides, even if they could, why would they want to? The music you describe sounds hideous.”

Finally, if all that weren’t enough, there is one other problem with this ‘guitar’ that GBoy has invented. It’s made of the wrong stuff. When pushed, a surprising number of people reveal an innate prejudice against the basic technology of the instrument itself.

“Sorry, but I just hate wire and wood,” they say.

trans-space-w440-ht30

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Footnote 1. Reason for ‘wire and wood’ phobia in World Without Guitars:

WWG is mostly just like our world, sans guitars, but it does differ in other minor ways. For instance, a lot more of the land is similar to Texas, with vast open plains and lots of cattle. Thus everyone has bad childhood memories of being abused by barb wire on wooden poles (and also a default state of kinda cranky counta there’s no SRV, one of the really good things about our Texas).

So horrible are these memories that they shrink back in terror when presented with an instrument made out of wire and wood (similar to the way many people in our world react when ‘confronted’ with a computer-based instrument). They can’t imagine a non-hostile use for something made of that shit, let alone doing art with it. “Are you kidding? You f***ing pervert!” they yell. Then more yelling, torches and pitchforks ensue.RIP Guitar Boy’s vision of a new art form based on a new instrument.

trans-space-w440-ht30

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Footnote 2. Improvisation may be tough even in a world with guitars:

More bad news, folks: improvised music proved impossible.

trans-space-w440-ht30

LoopyCam

Posted in culture & media design, performing graphics, tools on April 29, 2012 by visualraccoon

LoopyCam is a visual performance instrument designed for improvisation.*

But the improvisation is of a very unusual kind — it is improviation of context not content. The content is taken from the immediate environment by the loopycam artist and then re-presented on a large video screen in front of the audience.

In that re-presentation, the LoopyCam artist modifies the video image in realtime using the vocabulary of both cinematography and video editing. This combination makes available traditional effects like cut, pan, and zoom — plus many other effects unique to the LoopyCam. For instance, moving, resizing, and overlapping of mulitple constantly-looping video clips (hence, LoopyCam).

And, these improvised modifications are often done in time to the music — that is, they can be done so quickly as to keep the beat.

Or as Tim puts it, “The low latency of LoopyCam allows the artist to align visual transitions and loop lengths with the music, and also with the movement of dancers.” **



Tim sits stage front to capture and re-present the action at SubZERO 2010.

Conceptual Overview of the major LoopyCam controls***

Videos

Tim on LoopyCam accompanying Rick and Bill Walker
at the SubZERO 2010 Looping Lounge

Leslie jams with Tim for the justly famous paper crumpling riff

Technical details http://loopycam.com

Other

Live drawing can also be a source of environmental content for LoopyCam.

*Yeah, I know — all visual instruments should be so designed, right?! Yet in fact very few are <sigh>.

Tim would want me to tell you that the instrument pictured above is in fact LoopyCam1 and that there is now a new improved LoopyCam2, see http://loopycam.com .

** Tim goes on to explain, “The low operational latency (the time between pressing control buttons and seeing their visual effect) allows the artist to precisely control visual transitions and loop lengths in order to match the timing of the music.”

*** NOTE: This controls diagram is only conceptual , to give a general idea of operating LoopyCam. The diagram shows a subset of the approximately 30 moves available, and Tim would probably disagree that the ones I have shown are “major.”

Space Palette — A New Instrument for Music and Visuals

Posted in culture & media design, performing graphics, tools on April 27, 2012 by visualraccoon


Space Palette performance at STEIM in Amsterdam April 2012

Conceptual Overview of how hand motions in the holes control music and graphics*

Full disclosure:

The original idea and intial sketch for the oval space frame design by the raccoon.

This is only a fan page; the official Space Palette home page is
http://spacepalette.com (natch’)

“Space Palette” is a trademark of Nosuch Media

Video from House Concert, San Jose, Feb 2012


Space Palette at Sea of Dreams, New Years 2012


The well-lit SP relaxing at home



For Tim, performing on the SP is the next best thing to watching others enjoy it (photographed by Rachael Torres).

*NOTE: The control diagram is only conceptual, to give a general idea of correlation between hand motions and music/graphics output. For example, in the current instantiation, graphics controls are overlaid onto the major music controls, so that one hand motion in a large hole will generate both music and graphics.

Improvised music proved impossible

Posted in culture & media design, performing graphics, tools on April 22, 2012 by visualraccoon

A couple of years ago the raccoon was asked to chair a panel on “New Media.” The speakers were all amazing and gifted hacker/artists. To chair such a group was a real and unexpected honor (and, I screwed it up; more on that later).

To start things off and incline the tone of the panel in the direction of my obsession — the performing of live visuals — I enthusiastically proclaimed and promoted the idea of “Blues Graphics.” “You know,” I said, “visuals improvised live like Stevie Ray Vaughn playing the guitar.” The phrase had sounded so good to me the day before, screening well in my mind’s eye (the same display on which also appears footage from the imaginary Veli’s Graphics Bar in West Oakland). So I used the chairguy’s one minute intro to play SRV’s version of “Mary Had a Little Lamb” while at the same time showing a moving montage of the outside of Veli’s. Thus setting the scene for joy and sharing.

Well, as it turned out, for me, not so much.

But first, the panel itself went well, and all panelists did outstanding presentation/demos.

However, afterwards, while standing around in post-panel conversation, I was informed that improvising graphics ala SRV on guitar was simply not possible because, “The parameter space is too large to map onto the control space.”

Yikes. How embarrassing for me.

And I didn’t even know exactly what that sentence meant. But it was delivered with such authority that I was paralyzed in cognitive thrall, stammering some response I don’t even remember. Then I slunk away to lick my cerebral fissures and contemplate the errors of my visually obsessive ways.

But later that day, far from the crowd and upon reflection, I realized that the slogan & dictum was bullshit.

Here’s the proof: simply substitute a well known human activity, musical performance, for visual performance. With good ol’ SRV as my counter example.

Because, see, you could say exactly the same thing about musical performance. First, think of all possible sounds, and then consider the possibility of designing some kind of instrument to make them. Pretty hard, huh? Among the many problems is the large number of parameters to control that incredible variety of sounds. Pretty big space, right?

But then some bozo comes along and says he wants to make that instrument, and then proposes to play it in real time, maybe even improvising with it.

You would have to tell him, “I’m sorry, but such a performance is not possible because the parameter space is too large to map onto the control space.”

End of discussion.

Good thing you were there to clue him in, saved him a lot of trouble.

Nor can bumble bees fly.

So, here’s why music can be improvised:

Indeed, the space of all sounds, it’s a large parameter space. And let’s throw in more parameters, timing. How many ways are there to sequence and sustain sounds over time? Double yow. But, I hadda throw in time, cause that’s where performances take place.

However, look folks, we’re simply talking frameworks here. They restrict and limit possibilities to enable creativity. Inventing within constraints, art is painting with restrictions, blah blah blah

So we can use the Western diatonic scale to trim that infinite sound space, and on temporality impose time signatures. Narrows things a lot. And then invent an instrument which further narrows the possible sounds, and which maps the result on a control space (strings and frets, say). In fact, the guitar is exactly a working model of how to map the trimmed parameter space onto a playable control space.

Bumble bees can fly, and visuals can be improvised without need of randomization or algorithmic slaves.

Visual SRV lives!

Dancing about architecture: What a good idea!

Posted in culture & media design, performing graphics, tools on April 9, 2012 by visualraccoon

Ghandi was once asked what he thought of Western Civlization. He replied, “I think it would be a good idea.”

So, dancing about architecture, let’s go for it.

Why not use the Space Palette as an input device for AutoCAD … oooo, “Spatial” Palette, cool!

Which is the point of the last chapter in Live Graphics Nightly: all text-graphic media for live performance have more in common than differentiating; fine art or applied art is a later distinction of use, not an a priori essential property of a medium (fiddles and violins).

=============================================

Of course, usually this famous saying is used in its various forms as a put down for media-mismatches.

A common version: “Writing about music is like dancing about architecture.”

FYI, first use apparently in 1918

Strictly considered, writing about music is as illogical as singing about economics. All the other arts can be talked about in the terms of ordinary life and experience. A poem, a statue, a painting or a play is a representation of somebody or something, and can be measurably described (the purely aesthetic values aside) by describing what it represents.

From: http://quoteinvestigator.com/2010/11/08/writing-about-music/

who goes on to say

“In 1921 the remark reappears in the form of a sphinxlike simile. The format of the comment uses the word “like” once and the word “about” twice. This conforms to the most common modern template.

Writing about music is like ____ about ____.

“The first slot contains terms like dancing, singing, or knitting and the second slot contains terms like architecture, economics, or football.”

So now you can generate your own!

3, no 4 … nah, it’s only Three Dimensions of Visual Performance

Posted in culture & media design, performing graphics, tools on April 7, 2012 by visualraccoon

Or, how to avoid “vuzak fatigue” = the audience ignoring the visuals.

This is a followup to a discussion last summer between myself, Tim Thompson, and David Tristram. David got things started by defining the problem:

dt> The audience ignoring the visuals. This is central to my frustration with visual performance and must be solved if we are to succeed.

My response was to dig up my old PIPs metric for visual performance. I claimed that one reason audiences preferring the triggering and mixing of pre-recorded visuals (common “VJ” style), or synchronous computer generated images (algorithmic slaves, “music visualizer” style), was because the manual performers were several orders of magnitude too slow to be interesting in a purely generative schema. Compared for instance with musicians and other fast input performers.

dt> PIPS is useful but is a very narrow metric.

Well, David is right, PIPs is a very narrow metric — by itself. But, when you add two other narrow metrics, then you get … narrowness compounded? Or, if lucky, a rigid framework which is useful just because it is definable. When I got my degree in rat psychology, I learned that measureable rigid frameworks have their uses, if only to clearly define where you don’t want to go. They can also provide a place to stand from which to get a clearer view of where you do want to go.

In that spirit, I say that, yes, PIPs by itself is a sterile metric, but when you add in AG and MP, then those three axises together define a useful space for visual performance. Or in less grandiose terms, a few things to keep in mind when designing, composing for, and performing with visual instruments.

The axises are Performer Inputs per Second (PIPs) with Air Guitarabilty (AG) in a visual system that has Mistake Potential (MP).

This works as follows:

You have a visual performer initiating very frequent actions (PIPs) which gives enough temporal density to weave engaging graphical patterns in realtime, and the audience knows she’s doing it thanks to AG (Air Guitarability, the visible correlation between performer body movements and changes in the visuals), all within a conventional temporal structure so there can be flow, expectation, surprise, and mistakes (MP).

By “conventional,” I don’t necessary mean old traditions; I simply mean conventions whether new or old which establish structure for the performance. Call it dynamic visual vocabulary, call it time signatures for visuals, call it late for dinner, whatever. Just so the audience has a chance to grok the rules for the visual temporal patterns you’ll be laying down.

Oh shit, there I’ve said it, “rules.” So be it. I’m just an old fart, conservative, straight-ahead, 12 bar graphics guy, so my viewpoint is a bit conventional (literally, conventions — I like ’em)

I think rule-breaking is great in artforms where there are established traditions to contrast with. Rule-breaking in live visual performance may be a bit premature, like making up a new language, not teaching it to anyone else, and then expecting people to appreciate the delightful ways in which you violate the syntax for extra poetic expressiveness. They won’t.

Oh yeah, and about the on-again off-again Visual Richness dimension. Originally not there, then yesterday I thought I needed it and so put it back in. But then I realized (again, apparently!) that Visual Richness is secondary, an epiphenomenon in the viewer’s perception generated by PIPs and MP. I claim that MP is only possible within a dynamic visual vocabulary of primtives, riffs, and time signatures. Such a visual system, like the music infrastructure (i.e. diatonic scale, notation, time signatures, etc), then supports the emergence of composition. And entertaining richness is simply good composition times speed. Otherwise it’s just visual noise (bad composition) or slow painting (come back when it’s done).

Finally, the excellent post by David that spawned this blog entry:


dt>
Date: Thu, 09 Jun 2011 08:44:16 -0700
From: David T
Subject: Re: "VISUAL MUSIC" a conversation

Excellent discussion fellow voyagers.

PIPS is useful but is a very narrow metric. I would posit a single mallet hit on a tubular bell performed at the correct instant can rival a Steve Vai solo. Or a haiku compared with "War and Peace". Or Cage strumming a piano harp with a feather. Or meeting someone's eyes. All summer in a day, or a moment.

The audience ignoring the visuals. This is central to my frustration with visual performance and must be solved if we are to succeed. It's the environment and expectations commonly associated with live performance that make it difficult to showcase visual performance. The solution is using an environment tailored to visual performance. We have them, key examples being movie theatres and opera.

For our smaller events, say like in Daev's garage, simple steps should be taken. Turn down the lights. Have the musicians face away from the audience and toward the screen. Have the video fall to black between compositions.

The above reveals my bias toward the artifact, not the act of creation. Ultimately, the experience of the observer is the critical event, and the main part of that happens between the screen and the observers eyes. However, personally, I am interested in visual (and musical) experiences that are not the same every time. That's why I like live music, and especially improvisational performers like the Dead. I believe live, improvisational, collaborative visual performance is exciting, beautiful, enlightening, and transformational.

Let's do some of that.