soundpocket 2: extremely local radio stations

soundpockets 2 illustration, originally uploaded by hc gilje.

This was the second project I made for urban interface oslo fall 2007.

I collected a library of field recordings I have made over the years. I set up an internet radio station for the project (using Nicecast), and played with different configurations mixing music and the field recordings, but ended up just using my own recordings.
I thought it could be interesting to stream internet radio, a global media, to very specific local areas. I found three locations in Oslo which would serve as the local radio stations. They were somehow connected to a clear visible cue in that location: A huge oak tree, a small sculpture, and a small pound in the roundabout. The range of the local stations would more or less correspond to these visual cues: If you saw them you would be able to pick up the signal from the radio stations. In numbers this would mean a range of 30-100 meters.
My original plan was to use the fm-senders for mp3 players which are mostly meant to be used to listen to the mp3 player through the car radio. This was partly because I was experimenting with solar energy as energy source, and because they were cheap. The range and quality of the signal wasnt good enough though, so I ended up getting the more powerful aareff fm transmitters .
The senders were placed with friendly hosts, letting me use their internet connection to pick up the internet radio stream.

The result was three very local radio stations sending out a continous soundtrack from other locations, so somehow these recorded locations came in dialogue with the physical locations of the radio stations.
The listening involved active participation from the public as you would need to tune in on your own radio to pick up the broadcast.

Soundpockets is a series of projects of intimate sound interventions in public spaces. By using fm radiowaves, soundbeams and miniature speakers to create local pockets of sound, the different projects have different scope and focus: creating private listening rooms, changing soundtracks of a location, displacement of time/or space and a bit of general disruption of everyday life.

Soundpocket 1: disturbing the soundscape

I made Soundpocket 1 as part of the exhibition urban interface oslo fall 2007.
From urban interface oslo blog:
“Hauntings? Dimension Doors? Time tunnels?
A boy heard what appeared to be the sound of a sheep coming from the wall of Strykejernet Art School.
A bartender at Blå was concerned when he heard running water like that from a leaking water pipe. The sound disappeared before he was able to locate it.
A seagull can be heard, but is nowhere to be seen.
Soundpocket artist HC Gilje is causing slight disturbances in the urban interfaces.”

Using a directional soundbeam to project a localized sound into a public space, this sound being only heard by the people within the sound beam which can be as narrow as 50 cm in diameter. It is similar to a lightbeam, only being sound instead. When it hits a surface it is reflected.
Soundpocket 1 was installed in a narrow passageway in Oslo, connecting two parts of the city. The soundbeam was mounted on a pan/tilt head making it possible to place the sounds very precisely in the passageway.

By bouncing the sound off surfaces, it seems as if the sound is coming from a window, door, elevator, a poster on the wall or just a more general presence. This made the piece into something which added another layer of sound to the existing soundscape, blending (sometimes disappearing) into the location.
Most of the sounds would appear to belong to the site, although dislocated (like the sound of the chandelier in the wind), the sounds of birds, telephones, babies crying, dogs barking, water running etc.

It was interesting to see how the piece was received. It was obvious for me that it wouldnt work very well as a typical art piece, it has a much more interventionist nature. I wanted it to be slight distortions to the regular soundscape of the passageway, and was pleased to see that the people who used this passageway regularly were noticing these disturbances. This could be described using the first of Barthes´ three listening modes: hearing involves “evaluation of the spatio-temporal situation“ and thus, it is linked to a “notion of territory“. It places the listener on alert when new sounds which dont´t “fit in” are heard.
By adding an extra layer of sound if also made people focus on the sounds which were already there.

The inspiration from this comes from when I studied in Trondheim in the 90ies, and I heard some stories about how a directional speaker had been used to cause a certain distress on a bridge over the local river: A person walking alone across the bridge suddenly hear whispering voices. An out of tune clarinet is projected into a marching band playing on the 17th of may (Norway´s national holiday).
If these stories are true or not, doesnt really matter, it is the idea of having a private experience in a public space which intrigued me.

Soundpockets is a series of projects of intimate sound interventions in public spaces. By using fm radiowaves, soundbeams and miniature speakers to create local pockets of sound, the different projects have different scope and focus: creating private listening rooms, changing soundtracks of a location, displacement of time/or space and a bit of general disruption of everyday life.

The mirror project

I was introduced to Martin Andersen last week, the artist behind the mirror project in Rjukan. Rjukan is in a valley where the sun disappears behind the mountains 5 months a year. Martin wants to construct a heliostat mirror (it follows the position of the sun) to get sunlight to the town square of Rjukan. This is actually an old idea from 1913 supported by Sam Eyde, the director of Norsk Hydro (which basically founded Rjukan for industrial purposes).

Unlike a similar project in Viganella in Italy which uses brushed steel as the reflection surface, the mirror project will use mirrors which focus the sun only to the town square (about 100m2).

directional sound

May I Have Your attention, Please, originally uploaded by Mar.co.

I am doing a series of projects called soundpockets for urban interface oslo, which in different ways tries to create pockets of sound in public space. Some of the versions involve the fm sender- mp3 setup mentioned in the previous post, another one involves a directional speaker mounted on a pan/tilt unit, and this has been my second headache this summer, finding a controllable pan/tilt unit which is reasonably fast, which can handle a load of a few kilos and which is not ridiculously expensive.

Fortunately I have had good help from Soundscape studios. The first ideas was to use a existing movinghead light and refit it with the speaker, but it turned out that the motors wouldnt be able to handle the load. Pan tilt units are usually made for a specific purpose, either light or video, and the few ones which are available for general purpose use and which are controllable are very expensive.
The one we have ended up with is quite expensive, but is controlled using serial protocol, is made for outdoor use, and is powerful enough to handle video projectors (for later projects). It is also very fast, up to 300 degrees per second pan, and 60 degrees per second tilt. Hopefully it arrives next week.

The most ambitious plan is to control it using an arduino microcontroller, which will also control a serial-controllable mp3 player, the daisy, so I should be able to place sounds quite accurately in a space, and also create movements with sounds.
If time runs short I will use a macmini with max controlling the sound and pan-tilt unit over the serial port.

I have been testing two different models of directional speakers which uses ultrasound as the carrier signal, I will probably have to go for the smaller one, although I am a bit worried it will disappear in the ambient sound. It is also challenging to find the sounds which works best, and also how to deal with the sounds both coming directly from the narrow beam of the speaker but also the reflections on surfaces in the space.

The inspiration for this projects comes from when I studied in Trondheim in the 90ies, and I heard some stories about how a directional speaker had been used to cause a certain distress on a bridge over the local river: A person walking alone across the bridge suddenly hearing whispering voices. An out of tune clarinet projected into a marching band playing on the 17th of may (Norway´s national holiday).
If these stories are true or not, doesn´t really matter, it is the idea of having a private experience in a public space which intrigued me.

solar energy + fm sender + mp3 = #$!#%!

solar charger posing at helgøya, originally uploaded by hc gilje.

Summer has seen few posts, but not because of lack of activity. I have been busy researching for the upcoming urban interface oslo exhibition. One of my challenges has been to find a setup with a short-range fm sender, a mp3 player and a solarcell/battery solution that would make it possible to place this unit anywhere and leave it running. This has proven a lot harder than I would have imagined.
First, there are now so many fm senders available, and it is really hard to distinguish good from bad (90 % bad), and the reviews out there are not trustworthy. There also seems to be so many factors affecting signal strength so the same sender might appear to have a strong signal one day and a really weak one the next day. Frustrating and time consuming, and I am still checking out different modules.

I guess I should ask Raghav Mahato in India, who claims to have built a radio sender for just over 1 usd.

I knew very little about solar power solutions before this summer, and the options range from build it yourself solutions to “how to survive after a nuclear attack” systems. I looked first at relatively new products advertised as solar chargers for mobile devices like ipods, cellphones and pdas.
Most of these mobile solar chargers combines small solar panels with an internal rechargeble battery with different types of breakout plugs.
Not all of them are able to provide power while charging, which was necessary for my setup. I gave the freeloader a try as it sounded like the perfect companion for a fm sender and mp3 player, it has a 2100 mAh battery, but the results were very disappointing. I guess the current from the solar panels is just too weak to provide enough power to keep the battery charged while in use.
There are not so many other ready-made solutions, either they have a smaller capacity than the freeloader or they are just chargers (so the batteries can´t be used while they are being charged).
I am now looking at more heavy-duty solutions, 6-15W solar panels in combination with a charge controller and a lead battery, but this becomes quite expensive and heavy. And all I need is about 100-150mAh. I am still hoping for the perfect solution to pop up.

This research  will also be useful when looking for selfpowered xbee solutions. They seem to have had success with a solar powered xbee system at ITP.
I managed to do a little bit of work with the Xbees a few weeks ago, finally getting the directmode (connect a input of one xbee to the output of another xbee, without using an external microcontroller) to work, and also exploring the sleep options, which means being able to keep the power used to a minimum.

I have discovered lots of interesting alternative energy websites, here are a few of them:

otherpower, gotwind, cirkits links, altenergystore

the matrix for the rest of us (well, almost)

Google Earth has implemented a new technology called street view, developed by Immersive Media

This could roughly be seen as a mix of very advanced quicktime VR and a film effect from The Matrix movies. Interesting to me as another example of the interrelation between space,time and motion.

From the Google Earth Blog:
“One of the many secrets behind their technology is a patented 11 lens camera system that simultaneously takes photos in 11 directions based on a dodecahedron geometry. They can capture 30 frames a second of high resolution photography. That’s right - we’re talking high resolution video in digital 360. You can stop, start, back up, single-frame, etc”

Maxwell city finished

Maxwell city: sniffer girl, originally uploaded by hc gilje.

Five intensive days with the Maxwell City Workshop at Atelier Nord is over, you can get some impressions here, as well as in Sophia´s blog, and a slideshow of images from my flickr site. There will most likely be a 20 minute radio program based on the recorded sounds later.

We mainly used two types of EM sniffers in the workshop, one antennae based, from this kit, and a coil based one, made by Martin Howse.

I have already jumped into another workshop, exploring video for stage, together with the director-, choreography- and scenography students at the National Academy of the Arts in Oslo.
I look at it as a collaboration: I propose several tools I have constructed,we work with them and I modify them according to the feedback from the workshop. This will be made publicly available later.

spletizizers

spletizizers, originally uploaded by hc gilje.

I am in Köln at the moment preparing for the “The queen is the supreme being of the realm” performance. As it happens, I am staying in the same hotel as last time I did a project in Köln:
In 2002 I was invited together with my co-pilot Kurt Ralske from 242.pilots to participate in a project initiated by Tillmann Roth. Roth built a flexible art container/platform (see image), basically a mobile art production and viewing space. He invited different media artists to do a project which would later be shown in the container. The common link in the project was that we should either make use of or be inspired by the sounds of Alan Splet (scroll down). Splet was the sound designer for David Lynch on all his films from the Grandmother to Blue Velvet. His use of ambient sounds very much shaped a space.

Kurt and I did a 45 minute video improvisation with his sounds as the soundtrack. This might become available through Audioframes at some point, or I might put some of it online.

Maxwell city

electromagnetic pollution, originally uploaded by schuttmasse.

At the end of May I will be part of the Maxwell city workshop at Atelier Nord, “A workshop proposing an artistic investigation into electromagnetic substance within the city of Oslo and its surroundings.”

Amanda Steggell has created a blog related to the workshop.

Aleph

IMG_9884, originally uploaded by we-make-money-not-art.

Aleph is a kinetic reflection display system by Bengt Sjölén and Adam Somlai-Fischer. A matrix of motorized mirrors.

Read more at we-make-money-not-art or directly at the aleph website