The Mute Fraction PET felt acoustic panel has a distinctive pattern designed using this proportion system, which was put forward by Dutch architect and monk Dom Hans van der Laan in 1928 and sees the 3:4 ratio as the basis of harmonious composition.
As with the golden ratio, van der Laan argued that elements that conform to the plastic number are pleasing to the human eye and don't feel out of proportion.
Following this principle led the De Vorm design team to the Mute Fraction panel, which consists of five unequal segments divided by five ribs.
The panel can be used vertically or horizontally and can be made to fit any surface, as all parts can be connected seamlessly.
The panel is the latest in De Vorm's Mute series of PET felt acoustic products and is available in a range of 11 colours.
Mute Fraction is made of recycled plastic bottles and is itself recyclable.
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