December 9th, 2010

Background Noise

Noise and airs are often generally subtle enough in their fluctuations to become imperceptible, defining the background of an environment due their persistence. By virtue of their existence as part of the background of the day to day experience of an environment, they constitute that which a sound or smell must set itself apart from in becoming perceptible or moving to the fore. Both often fall beneath the thresholds of conscious perception, temporarily slipping into imperceptibility, while at the same time defining these thresholds.

Below are some experiments combining background noise and data derived from the quantaties of diverse airs populating the background of our respiratory and olfactory experience.

NormalCloud.mp3
PlagueCloud.aiff (large file).

These are experiments and don’t need to go on for long, so duplicate lines were removed from the log files using the following emacs commands:

C-x h C-u M-x shell-command-on-region RET uniq RET

The SuperCollider code responsible for the sounds above:

 
s=Server.local.boot;
 
s.doWhenBooted({
 
	var average, length, int, subav, duration, value;
 
	f = File("/Users/cl-user/PlagueCloudReduction.txt", "r");
 
	// put the contents of the file into an array, as long as it is not nil:
 
	a = Array.new(f.length);
	f.length.do({ |i|
	v = f.getLine;
	if (v != nil, {
	a.add(v.asInteger); });
	});
 
	// calculate average value of the file (background noise):
 
	average = a.sum/a.size;
	"average : ".post; average.postln;
	f.close; // dispose of exhausted file.
 
	// open anew:
 
	f = File("/Users/cl-user/PlagueCloudReduction.txt", "r");
 
	// get server ready for recording:
 
	s.recSampleFormat_("int16");	// lame has issues with whatever the default settings are
								// so int16 set for easy mp3 encoding.
	s.prepareForRecord;
 
	// buses:
 
	s.sendMsg(\c_set, 100, 20);		// frequency bus
	s.sendMsg(\c_set, 200, 0.01);	// q bus
	s.sendMsg(\c_set, 300, 0.4);	// vol bus
 
	// White Noise through a bandpass filter:
	SynthDef(\bpass, {
		|freq, rq, vol|
		var noise;
		noise = BPF.ar(WhiteNoise.ar(1), freq, rq, vol);
		Out.ar([0,1], GVerb.ar(noise*Formlet.ar(noise, freq, 0.1, 0.2, mul: 0.05), 
			100, 1.2, 0.75, drylevel: 0.5));
	}).send(s);
 
 
	// a line generator to control the freq, q and volume of the above synth:
	SynthDef(\line, { 
		|outbus, end, dur|
		Out.kr(outbus, XLine.kr(In.kr(outbus), end, dur, doneAction:2));
	}).send(s);
 
	// Start the synth:
	s.sendBundle(nil, [\s_new, \bpass, x = s.nextNodeID, 0, 1],[\n_map, x, \freq, 100, \rq, 200, 	\vol, 300]);
 
	// start recording:
 
	s.record;
 
// send values derived from log file to synths:
 
Routine.new ({
 
// use the length of the array that the log values are stored in to determine length of the loop:
 
	a.size.do({ 
 
		int = f.getLine.asInteger;
		duration = int / 100;
		value = ((int)**((int)/int));
 
		s.sendBundle(0.3, 
 
			[\s_new, \line, s.nextNodeID, 0,1, \outbus, 100, \end, value, \dur, duration],
			[\s_new, \line, s.nextNodeID, 0,1, \outbus, 200, \end, int/120000, \dur, duration], 
			[\s_new, \line, s.nextNodeID, 0,1, \outbus, 300, \end, int/30, \dur, duration]
 
		);
 
		duration.wait;
 
	}); // end loop
 
	f.close; 			// close the log file
	5.wait;			// wait five seconds
	s.stopRecording;	// stop recording
	//s.quit;			// kill server
 
}).play; // end routine
 
}); // end when booted..
December 6th, 2010

Ruskin and the Nephological Medium

In carrying out research into the history of air while working on this residency, Ruskin came up a number of times, which is not surprising giving the location of the residency. I know very little of Ruskin, but have found his meteorological speculations fascinating since digging out his two lectures on The Storm Cloud of The Nineteenth Century. Ruskin made many studies of clouds, some of which I had the pleasure of seeing last Friday at Brantwood. Rather than his aesthetics, it is on the concepts presented in his lectures on clouds, presented to the London Institution in 1884, that I’d like to focus on now. All the quotes below are taken from the transcript of the lectures available here: http://www.gutenberg.org/ebooks/20204 . What follows is a few quick notes on what I consider the highlights of these lectures. It is these lectures that I’m particularly interested in as they contain a mixture of careful description with physical and mystical speculation on the nature of diverse clouds. Perhaps unsurprisingly, clouds are defined as such by Ruskin according to their visibility, yet this distinction is not made without ambiguity as Ruskin will speak of airborne bodies composed of “an invisible, yet quite substantial, vapour; but not, according to our definition, a cloud, for a cloud is vapour visible.” While not a cloud, these invisible vapourous bodies nonetheless remain substantial, affective objects. Ruskin goes someway to beginning a taxonomy of clouds based around floating “sky clouds” and falling “earth clouds”, but it is the bodies of air that are not quite clouds that I find particularly interesting, the mists that Ruskin identifies as existing in-between sky and earth clouds. It is the status of being in-between that is particularly interesting as it is that which does not quite satisfy Ruskin’s taxonomic criteria for cloud status that pertains to the invisible and to the diffuse bodies of a subtle and subliminal influence. This in-between status alludes to a body of air in transformation, between states, in flux; it is this being in-between or interstitial existence that is in part behind Deleuze and Guattari’s mention of fog and mist where they relate both theses states of the air to what they call a haecceity, a being that is in the process of becoming something else, always in a state of change, ephemeral and contingent: ‘ a haecceity is inseparable from the fog and mist that depend on a molecular zone, a corpuscular space’, (A Thousand Plateaus, 301).

Beyond Ruskin’s general work on clouds, it is the concern he expressed for a dark and menacing wind or cloud particular to the 19th century that is really interesting: “This wind is the plague-wind of the eighth decade of years in the nineteenth century; a period which will assuredly be recognized in future meteorological history as one of phenomena hitherto unrecorded in the courses of nature, and characterized pre-eminently by the almost ceaseless action of this calamitous wind.” This calamitous wind is most easily characterised as the product of rapid industrialisation and signals Ruskin’s environmental concerns, but what is of particular interest is that the action of the plague-wind or cloud cannot be neatly restrained to the problem of pollution, insofar as Ruskin bears what we would now refer to as a broadly ecological understanding of its contingencies, interconnections and extensions, with cloud formations occupying the position of a medium between industry, politics morality and subjectivity. The extent of Ruskin’s implication of the plague-cloud within an ecological field comprising the political, spiritual and environmental can be seen in the second of his lectures on the subject where he describes “the clouds and darkness of a furious storm, issuing from the mouths of fiends—uprooting the trees, and throwing down the rocks, above the broken tables of the Law, of which the fragments lie in the foreground.” Here the nephological is understood to seep not only into organic bodies but to infiltrate the Law, which due to its capitalisation should be read as referring to the domain of morals and ethics in general, to an order of social power and control.

Ruskin’s plague cloud “looks partly as if it were made of poisonous smoke; very possibly it may be: there are at least two hundred furnace chimneys in a square of two miles on every side of me. But mere smoke would not blow to and fro in that wild way. It looks more to me as if it were made of dead men’s souls—such of them as are not gone yet where they have to go, and may be flitting hither and thither, doubting, themselves, of the fittest place for them.” Here the plague-cloud is not limited to being thought as solely produced by furnaces and composed of the diffuse elements of burnt offerings to industrial progress (the “sulphurous chimney-pot vomit of blackguardly cloud”), but as being confused with the soul and the flight of the dead, echoing conceptions of the air as the medium of the spirits that has persisted for millennia. The broadly ecological (by which I mean an understanding of the interconnectedness of all things rather than the strictly ‘natural’) implication of the nephological, of clouds, mists and winds, within a distinctly moral and spiritual order can be found in Ruskin’s conclusion to the first lecture:

“Blanched Sun,—blighted grass,—blinded man.—If, in conclusion, you ask me for any conceivable cause or meaning of these things—I can tell you none, according to your modern beliefs; but I can tell you what meaning it would have borne to the men of old time. Remember, for the last twenty years, England, and all foreign nations, either tempting her, or following her, have blasphemed the name of God deliberately and openly; and have done iniquity by proclamation, every man doing as much injustice to his brother as it is in his power to do. Of states in such moral gloom every seer of old predicted the physical gloom, saying, “The light shall be darkened in the heavens thereof, and the stars shall withdraw their shining.” All Greek, all Christian, all Jewish prophecy insists on the same truth through a thousand myths; but of all the chief, to former thought, was the fable of the Jewish warrior and prophet, for whom the sun hasted not to go down, with which I leave you to compare at leisure the physical result of your own wars and prophecies, as declared by your own elect journal not fourteen days ago,—that the Empire of England, on which formerly the sun never set, has become one on which he never rises.”

The plague-cloud here constitutes a grim and filthy prophecy, being enfolded within a moral, spiritual and political order. That these clouds should have been thought by Ruskin to have moral and spiritual implications is not entirely surprising when taken in the context of certain aspects of scientific and philosophical thought prevalent around the time he presented these lectures. During the 1870′s, there are accounts of not only the physical impacts of diverse atmospheres such as tropical climates upon immigrant and primarily colonial populations, but also the moral impact of the climate upon its ill-prepared, ill-tempered, or ill-weathered European subjects who sought to exploit the resources of far-off lands ( a nice introduction to these ideas can be heard here http://www.bbc.co.uk/programmes/b00wfhgg ). While there is a highly dangerous element to this kind of thinking on climates and atmospheres, a danger that persists where environmental determinism is allowed to remain unilateral, according to which people are simply a product of their environment and the subjects of climate, where the influence of atmospheres and environments is taken amidst a broader approach to atmospheric influence and environmental interactions it helps account for the nuances of ecological relations, including (as in Ruskin’s work) the natural, synthetic, political and spiritual.

There are a few fragments within the two lectures that I find particularly interesting from the point of view of artistic practice and spatial productions, namely the moments where Ruskin considers the composition of clouds that are not normally considered natural or strictly meteorological. Considering the malignant qualities of plague-clouds, Ruskin briefly wonders whether “perhaps, with forethought, and fine laboratory science, one might make it of something else”. Here I’m inclined to speculate on Ruskin’s spirit of invention, imagining it turned towards the production of clouds as an artform or architecture of the air, and imagine Ruskin dabbling in the production of clouds of a more agreeable composition, releasing them from a laboratory that was never built onto the side of Brantwood. We can find a further fragment of a larval nephological synthesis in Ruskin’s question: “What—it would be useful to know, is the actual bulk of an atom of orange perfume?—what of one of vaporized tobacco, or gunpowder?—and where do these artificial vapors fall back in beneficent rain? or through what areas of atmosphere exist, as invisible, though perhaps not innocuous, cloud?” In these questions we find Ruskin considering atmospheric production by means of perfume, explosions and smoking, and an altogether more experimental mode of thinking on the subject of atmospherics and cloud production.

Hopefully by the end of this residency I can draw up a reading list to enable me to take these speculations further.
These final images were taken during an earlier trip to Coniston to gather samples in Ruskin’s garden:


December 2nd, 2010

A Mysterious Ravine

A static canary was left in Ford Park to see what invisible and diffuse bodies were passing through it over a 24 hour period (see invisible.folly.co.uk/ford-park/). After 24 hours in the park, here’s the data it gathered on general fluctuations in airquality:

Mostly there are only minor fluctuations, apart from the huge ravine that occurs later in the plot. As the static canary is only a simple device it doesn’t log the time that values are written to its SD card. To figure out the time at which this dip appeared I wrote a small python script:

file = open("~/Documents/FLI/Static_Plots/Ford_Park_Hedge/LOG00129.txt")
i=0
hour = 16
day = 1
for line in file:
	if line == '\n':
		continue
	else:
		i+=1
	if i%60 == 0:
		hour += 1
		if hour%24 == 0:
			day +=1
	print str(day)+"-"+str(hour%24)+"-"+str(i%60)+"\t"+str(line),

hour = 16 because I turned the device on at roughly 16:00 on Tuesday this week. The canary records one value every minute so the rest of the script uses this fact to figure out the approximate time of each plot:

(day-hour-minute value)

2-10-57	414
2-10-58	414
2-10-59	414
2-11-0	413
2-11-1	413
2-11-2	413
2-11-3	412
2-11-4	412
2-11-5	411
2-11-6	410
2-11-7	410
2-11-8	409
2-11-9	408

the output from this shows the dip happening around 11am on Wednesday 1st December. The cause is presently unknown.

November 30th, 2010

Ford Park

After a spot of litter collecting with the volunteers at Ford Park this morning, we decided on a couple of good locations for the static canaries (the name given to the sniffers by Lanternhouse’s Programme Director Claire Benbow). This particular version of the device is designed to be left for long periods in one place, rather than carried during walks, so simply records fluctuations in air quality without the gps data. Recording started at approximately 16:00 today (Tuesday 30th November); I’ll return to collect the canary on Thursday morning to see what data has been gathered. As the weather has become a little more harsh in recent days, a hi-tech anti-snow device was required:


November 24th, 2010

Terraforming

This afternoon was spent working on further power saving measures and then another test run up the hoad and down through Ulverston town centre. After getting back to Lanternhouse and thawing my icy fists, I thought it might be nice to try out some methods of combining the elevation data with the data gathered from the various gas sensors being used on these walks. The three images above are i) latitude, longitude, elevation ii) latitude, longitude, ozone intensity iii) latitude, longitude, elevation - ozone intensity.

November 20th, 2010

Ozone


Above is the terrain data from today’s test walk, just latitude, longitude and elevation in gnuplot’s beautiful default colour scheme. The sniffer has been fixed and bottled up.

It’s interesting that where yesterdays walk plotted general air quality against landscape and came up with something not too disimilar from that which is visible (see: http://invisible.folly.co.uk/hoad-plots/) plotting ozone concentrations (z) against latitude and longitude (x,y) produces a dramatically different image of the landscape. In the above image the terrain data (green) and a plot of latitude, longitude and ozone concentrations (purple) are overlayed to stress this difference. Below are some further maps of the route taken today and images from a few notable locations.




Nearby, someone was building a house.

Slimy and decaying seating, found just beyond the border of Ulverston.

November 19th, 2010

Hoad Plots




After spending yesterday evening working on a low power version of the sniffers, the sun finally shone on Ulverston today, so I did a quick test run up to the hoad monument which towers above the town. The images above only really show half a plot as I broke the power cable at the top, hopefully tomorrow will be equally as nice a day and I can do some more thorough tests. The data for these images was gathered during the 35 minutes it took to walk from Lanternhouse to the top of Hoad Hill. The first shows the gps coordinates and elevation, the second shows airquality against latitude and longitude, the third shows the sniffer shortly before I broke it, and the fourth shows the route taken.
(Thanks to Martin Howse for the introduction to gnuplot).

November 17th, 2010

Jars

For the Invisible Cartographies project I’m making two types of devices that gather data on atmospheric chemistry in specific locations: one is a mobile device that relays the information it gathers to a mobile phone (running an Android application I’ve been working on) via bluetooth where it is tagged with GPS data and stored on the phone’s internal SD card for later use, the other is a static device that will be placed in a location and left for extended periods of time.

Yesterday we presented the Invisible Cartographies project to the public for the first time. As part of this presentation Oyunga put together a promotional pack containing a miniature knitting kit and jar of air. It turns out that the jars are the perfect size for the static devices:


This evening I’ll be trying to find a suitable location to hide this in Ulverston, as long as it isn’t stolen I’ll put a quick plot up once I’ve retrieved it.

November 9th, 2010

Knitting and Plotting

Tests of the sensor and GPS logging are coming on well. After meeting up with the Lanternhouse knitting group last tuesday I’m keen to pursue wool as both a means of representation of the data gathered during walking, yet more more excited about the social structure of the knitting group as means of discussion and working with the ideas of interest and the data gathered. My knitting is still terrible but slowly getting better with the help of this blog: http://www.bellaceti.com/blog/2009/03/how-to-cast-on/ Below is some documentation of both of these things. The test walk in North Shields and Tynemouth resulted in me being caught out in a storm on the sea front, otherwise this walk would have been more circular. For now this is just logging ambient light for testing purposes while I await the arrival of the gas sensors from across the ocean.
A quick gnuplot of the sensor data against location can be found here: http://willschrimshaw.net/inv/plot.html

Potential code to be developed: conversion of gps log to knitting pattern/code such as:

1st Row: (Yo, k1) 3 times
2nd Row: Yo, p5, k1
3rd Row: Yo, p1, k2, yo, k1, yo, k2, p1
4th Row: Yo, k1, p7, k2
5th Row: Yo, p2, k3, yo, k1, yo, k3, p2
6th Row: Yo, k2, p9, k3
7th Row: Yo, p3, k4, yo, k1, yo, k4, p3
8th Row: Yo, k3, p11, k4
9th Row: Yo, p4, k5, yo, k1, yo, k5, p4
10th Row: Yo, k4, p13, k5
11th row: Yo, p5, k6, yo, k1, yo, k6, p5
12th Row: Yo, k5, p15, k6
13th Row: Yo, p6, ssk, k11, k2tog, p6


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