picture 6: Installation view, Kunsthalle Winterthur, 2018
picture 5: Installation view, Lichthof im Sächsischen Ministerium der Finanzen, Dresden, 2012


TRIKLANG


3-screen video-sound installation, 16 : 9 HD video, 1 h 21 min, 36 inkjet prints, 22.5×30 cm each, photograms, wood, glass, 100×130 cm,
instrument: Ohrmeter (ear meter)
2012/2018

A homemade string instrument called an Ohrmeter, which is equipped with a 1-metre-long bass G string, translates geographical distances into string lengths and thus into audio frequencies. Close distances have a high, even shrill, pitch; long distances have a low, vibrating pitch. In 2012, Bignia Wehrli collaborated with the composer Peter Andreas to create an acoustic survey of Saxony, based on Christian August Nagel’s 1862 triangulation network. The distances between the 36 measuring points were proportionally measured on the string of the Ohrmeter and then played — by turning 360 degrees around — at each of the original 36 spots within the landscape and audio-visually recorded. Each point reveals a unique melody, which results from the sequence and lengths of the distances to the neighbouring points. The installation includes a graphic compass-rose score of 36 prints, as well as a trigonometric- cartographic chart made of photograms.

››› video-sound installation excerpt
››› Instrument Ohrmeter