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Title	Spectral Teletype
Description	Messages Turned Into Melodies
Keywords	cooper baker, cooper, baker, cooperbaker, spectral, teletype, message, messages, spectrum, fft, fast, fourier, transform, melody, melodies, pitch, music, sound, audio, interactive, gallery, art, artist, artwork, sound, amazing
Content	<?php image( 'teletype.png' ); ?> <br> <?php ruler( 'About' ); ?> Spectral Teletype is an interactive audio-visual piece that turns messages into melodies. Participants are invited to transmit messages from their smartphones, and the messages are used to simultaneously display and play a synthetic representation of the text in a scrolling audio spectrum. <br> <br> Melodies are created from strings of characters by printing the characters into the audio spectrum. In order to sonically print the characters, an oscillator bank is configured as an aural dot matrix printer, and the characters are divided into 32 by 32 pixel grids. The oscillator bank plays these pixels as sine waves in harmonic relationships, creating notes that represent the shapes of the characters in the audio spectrum. <br> <br> The pitch of each character is selected from a major eleventh chord, with more frequently used characters the toward the root of the chord. Additionally, the chord is modulated between scale degrees I, IV, and V based on the first character of each word. <br> <br> This work was created with custom software written in the Pure Data, HTML, PHP, and C programming languages. <br> <br> Spectral Teletype was exhibited in 2015 during the Make Music San Diego event at the San Diego Art Institute, and in the 2015 Ephemeral Objects show at the San Diego Art Institute. <br> <br> <?php ruler( 'Video' ); ?> <?php video( 'spectral teletype.mp4' ); ?> <br> <br> <?php ruler( 'Photos' ); ?> <?php gallery(); ?> <br> <?php ruler( 'Code' ); ?> A couple of custom Pure Data objects were used to realize this piece. One is an oscillator bank, named <i>teletype~</i>, that prints the characters as sound. The other object is a fifo buffer for ascii messages, named <i>asciibuf</i>, that allows strings of characters to be stored en masse while individual characters are printed at regular intervals. The C code for these objects is shown below. <br> <br> <?php ruler( 'teletype~.c' ); ?> <?php code( 'teletype~.c' ); ?> <?php ruler( 'asciibuf.c' ); ?> <?php code( 'asciibuf.c' ); ?>
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asciibuf.c
gallery
    images
        didactic.jpg
        equipment.jpg
        interface.jpg
        message a.jpg
        message b.jpg
        message c.jpg
        patrons a.jpg
        patrons b.jpg
    thumbs
        didactic.jpg
        equipment.jpg
        interface.jpg
        message a.jpg
        message b.jpg
        message c.jpg
        patrons a.jpg
        patrons b.jpg
spectral teletype.mp4
teletype.png
teletype~.c