Archivi tag: wood

Transforming a wooden floor into a multichannel sound system: “Wooden waves”, video documentation


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Finally I prepared the video documentation of “Wooden Waves”, an installation originally conceived for the beautiful windmill of Harplinge, which is now turned into a hub for experimental arts (HarpArtLab), for the BZZZ! international sound art festival (July 2015).

(You may also take a look at the pictures I uploaded to a previous blog post.)

Eight contact speakers are attached to the floor’s wooden planks.

The listener lays down on the floor, transformed in a resonating surface.

Sound is perceived not only through the ears, but mostly through the body of the listener.

By stimulating the body in 8 different areas, a spatialization of the tactile sensation is put into play. This makes it possible to shift the use of space – typical of the electroacoustic composition approach – from the external dimension of the environment to the internal dimension of the body of the listener.



Using a wooden floor as an eight-channel tactile sound system

BZZZ – International Sound Art Festival took place for the second time in the old windmill of Harplinge (near Halmstad, Sweden) from the 3rd to the 5th of July 2015.


I participated with a new installation, called “Wooden Waves”, in which eight vibrating devices were transforming the wooden planks of the 4th floor of the windmill in a resonating surface. People was asked to lay down on the floor to experience the vibrating waves and percussive sounds flowing along their body.
For now only some pictures are available, but a video and a more detailed post will follow during next weeks or months.

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“Audiotactile chair” at the Darmstadt Ferienkurse – documentation video

Documentation from the first setup at the 47° Darmstadt Ferienkurse (August 2014).

The project consists of a chair with eight vibration speakers attached. The speakers stimulate the tactile perception of the audience in eight distinct parts of their body.

Realized for “Composition beyond music” workshop (Peter Ablinger, tutor)

With support by Kulturbryggan and Musikaliska Akademien

https://www.youtube.com/watch?v=8BWlqvEOy6Q

Video footage: Christine Schorkhüber

New sound installation: “Subverted spatialization interface”

Foto: Zoé Tabourdiot

During the residency at Park in Progress (Mons, Belgium), September 2nd-11th 2014, I was able to produce two new sound installation involving contact speakers.

In “Subverted spatialization interface”, one of the two new works, I used three vibrating devices under a 70×70 cm wooden board. The devices were shaking the board at 30 and 60 Hz.

The piece was shown during the European night of young creation (Sept. 11th) and the documentation video was exhibited 14th-27th September (Site des anciens abattoirs, Mons).

“Subverted spatialization interface” is an ironic installation which presents a real-world version of the software interface used by electroacoustic musician to spatialize sound, often represented on computer screens as a circle that the musician can move within a square. In this installation, the spatialized vibration under a square wooden board causes a little ball to stroll around. The dimensions of visual input and audio output are then subverted: imperceptibly spatialized sound is the cause which produces visual, concrete results.

Realized at the Park in Progress sound art residency 2014 in Mons (Belgium).

Transcultures / Pépinières européennes pour jeunes artistes / Citysonic

Foto: Zoé Tabourdiot

Foto: Zoé Tabourdiot

Spectral and vibration response tests on wooden planks

These are tests made on eight wooden planks (silver fir), ca. 10 cm wide, 2 cm thick, length variable between 150 and 230 cm. They were placed on a bubble wrap.

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I sent two different signals travelling through the eight vibro speakers (Mighty Dwarfs, attached to the planks via tape). Both signals were controlled via a Max/MSP patch (something between a drum machine and a granulator) which could modulate the pitch and amplitude envelope of each grain, and the duration and tempo over time.

1. Sine wave (varying around 60 Hz) continuously travelling from channel 1 to 8.

  1. Download here the 8-channel file used for the test.
  2. Download here the stereo mixdown of the previous file used for the sonogram.
  3. Download here the stereo recording (ZOOM H4) of the wooden planks resonating.

Sonogram of the original file (stereo mixdown):

Sine - clean


Sonogram of the resonating wooden planks:

Sine - wood

As you can see, the wood resonates with a lot of harmonics and side-noises (other objects were probably resonating as well) even if we send a “pure” sine wave.

2. Sawtooth wave, two sets: one around 60 Hz, travelling from channels 1 to 4; the other slightly higher (one semitone), traveling from channel 5 to 8.

  1. Download here the 8-channel file used for the test.
  2. Download here the stereo mixdown of the previous file used for the sonogram.
  3. Download here the stereo recording (ZOOM H4) of the wooden planks resonating.

https://drive.google.com/file/d//edit?usp=sharing

Sonogram of the original file (stereo mixdown):

Sawtooth - clean


Sonogram of the resonating wooden planks:

Sawtooth - wood