Nina Caio Q10

From DigitalCraft_Wiki
Revision as of 21:29, 30 January 2017 by Caio (talk | contribs) (→‎THE SSTV)
Jump to navigation Jump to search

88



ABOUT

Radio is often only seen as a medium to transmit music and information through audio to people.

The question that arose was how can we use radio to transmit something beyond sound? This collection investigates a broad range of aesthetic experiments with the broadcasting technology of radio. For us it

is also an inquiry of intervention of this art form. This collection aims to rethink and reconceptualise the radio medium as an explorative aesthetical archive.

The goal of 88,4 DX is to create a temporary autonomous zone of art to communicate artistic compositions for interpretation. Proposing an alternate way to experiencing visual art through the radio.

88,4 is a project made by Nina Michailidou & Caio Vita

SOUND STATION

The radio station 88.4 FM is constantly broadcasting the artwork we have created with the SSTV and FM Transmit- ter. We recorded the SSTV sounds of each one of the im- ages, and made a long play with all of the sounds, so peo- ple can tune in the 88,4 FM and start receiving the images through a SSTV software. Also, it’s possible to apply effects to the broadcast image by a live sound effect app running on the smartphone that is being used as the sound source.

246x489px 246x489px

718x944px

Example of SSTV used as art

OPTICKS is an annual art project from Dutch artists Daniela de Paulis and Jan van Muijlwijk aims to re- mind us of the moon’s majesty and proximity by pro- jecting sounds and artwork directly at it and catching whatever bounces back with the Dwingeloo radio telescope.

The project works by taking an image and converted its colors to audio. That data is then converted into radio waves which are fired off at the moon. Today, they’re adding to the concept by sending radio waves processed from kids’ artwork to bounce amongst moon rocks and craters in what the artists call Visual Art Moonbounce.

285x207px

262x262px

Our SSTV tools

The software we choose to start exploring the possibilities of SSTV and images transmission were the MMSSTV by MM HamSoft for Windows computer and the Android APP Robot36.

Both are able to encode and decode the images into SSTV code to be transmitted via radio.

502x299px

File:Media/image10.png

STEP 1

— Building the FM transmitter

To test the possibilities of broadcasting images through the radio, we had to first build an FM transmitter that would be able to send the SSTV encoded message through radio waves.

Tetsuo Kogawa is an artist that works with Radio and electronic Arts. On his website http://anarchy.translocal. jp is possible to find schematics on how to build a simple FM Transmitter using a copper plate circuit.

After building this transmitter we have made an acrylic box to protect it, we chose acrylic because we think it’s important to show technical elements behind the project.

192x284px301x270px

289x209px

262x262px

After building this transmitter we have made an acrylic box to protect it, we chose acrylic because we think it’s important to show technical elements behind the project.

375x283px

718x944px

718x944px

88,4fm

RTL-SDR

To find the radio frequency of our transmitter, we’ve used the Mac software GQRX that works with a RTL-SDR anten- na. This tool give us a visual way of scanning through radio waves and make it easier to find the

frequency where our FM Transmitter is broadcasting.

After some tuning and adjusting we got it on the 88.4 FM frequency.

488x362px

STEP 2

— Testing the possibilities of the tool

Now that we have learned how the tools, the softwares and the electronic aspect of SSTV and Radio works, we start testing it. First to decide which encoding mode will better suit our needs, second to try to disrupt the tool to create effects that could be further explored as an aes- thetical element for visual art.

718x942px

test card Martin 1

255x224px253x223px

Martin 2 PD 120

253x223px253x223px

After several tests and observations, we have decided that the Scottie DX enconding were the one we are go- ing to use for our project, because of the image quality and speed advantages of it.

PD 240 ROBOT 72

253x223px254x224px

SCOTTIE 2 SCOTTIE DX

253x223px253x223px

File:Media/image29.png

TESTING PATTERNS

  • == Using two laptops ==

508x448px

File:Media/image29.png

508x448px

File:Media/image29.png

508x431px

File:Media/image29.png

507x446px

File:Media/image29.png

507x446px

File:Media/image29.png

508x448px

TESTING PATTERNS

  • == Using Robot36 - SSTV Image Decoder App ==

311x458px

File:Media/image43.png

Caio

Nina

308x453px

File:Media/image47.png

Caio

Nina

311x458px

File:Media/image51.png

Caio

Nina

357x448px

File:Media/image55.png

Caio

Nina

357x448px

File:Media/image59.png

Caio

Nina

TESTING COLORS

We did this experiment to extract the SSTV sound from each color of the color wheel (primary and secondary only). After having the pure sound of each color, we mixed it with Audacity (sound mixing software) to see if we could create new images compositions through the color’s sounds. Then we broadcast this new mixes to get the new image on the SSTV software. The results were not very exciting visually because the software makes one sound for a line, so the only kind of composition possible was one line each color.

718x944px

361x340px

530x122px

361x340px

361x340px

361x340px

361x340px

TESTING PHOTOGRAPHY

We also want to find out what effect SSTV can cause on portraits and photography. We first run some tests to see how the photography will be received and what noise will be added to it when transmitted via SSTV.

511x320px

396x317px

320x320px

396x317px

319x320px

396x317px

AUDACITY

Because on the SSTV process the image are trans- lated to sound, we thought it was a natural move to explore how editing this sound will affect the received image.

On this test we recorded the encoded sound from the SSTV software for each one of the images, and after that we mixed the sound file using audacity.

With this new mixed sound, we’ve made a radio trans- mission to be received by a SSTV decoder. The result was a mixture of both photos into one image.

Another test made with Audacity was to apply sound effects to the encoded sound, then to transmit this new sound and see how each effect affected the image.

531x749px

254x256px 254x256px

450x316px

562x463px

wa wah effect

399x320px

delay effect

399x320px

phaser effect

399x320px

echo effect

399x320px

reverse effect

399x320px

tremolo effect

399x320px

718x944px

Personal development & artwork

718x943px

718x943px

71

718x943px

72

718x943px

73

718x943px

74

718x943px

75

718x943px

76

718x943px

77

718x943px

78

718x943px

79

718x943px

80

718x943px

81

718x943px

82

718x943px

83

718x943px

84

718x943px

85