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drawing on ideas from an earlier work EVP, this piece is a scoreplayer that visualises sonic features of a recorded environment. It is envisaged that the percussionist Vanessa Tomlinson will make a field recording and collect objects to play in the vicinity of the performance venue and then use the scoreplayer to either "play" or improvise around the environmental sounds . The amplitude of the frequency is represented by the size of the rectangle. The brightness, noisiness and bark scale value of each event determines the shade of the rectangle. The brightness, noisiness and bark scale value of each event determines the shade of the rectangle and are intended to be indicators of timbre. (This is the principal technical issue still under development).
The output is displayed for the performer on the right of the screen and scrolls to the left. The source recording is delayed so that the sound is heard as the visual representation arrives at the “playhead” (the black line of the left of the screen. The video shows visualisations of a magpie carolling, a section of Ligeti's Atmospheres and Schaeffer's Etude Chemins de Fer. Project to sonify a spectrogram using 613 frequency bands rendered as sine waves with varying degrees of noise added to the signal. the audio and video had to be recorded separately and may not be precisely in sync. the audio was made from three passes through the data - one a general pass - one a bass pass (frequencies below 70 hz) and one a melodic pass capturing the contours of the principal frequencies. Pass 1. image (all frequencies) Pass 2. image (bass frequencies) Pass 3. image (principal frequencies) Video of the result Decibel (Aaron Wyatt - viola, Tristen Parr - cello, LV - bass clarinet, Stuart James - electronics) at the 4th Switch ON Mini Festival at FINDARS - KL, Malaysia.
In 2012 I made a maxpatch that generates versions of Cage's Radio Music and could theoretically be set up as an installation. Originally I planned to control real radios via arduino - but it is quite an engineering feat to turn a tuning dial fast enough and accurately enough - so I speculated about using a software radio - but I got distracted by other things. Now these guys come along with a nice software defined radio (SDR) - maybe the project is back on the drawing board: http://zerokidz.com/radio/Home.html The TouchOSC interface for zerokids' SDR
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lindsay vickerytest version CategoriesArchives
September 2020
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