From the Spectrogram collection, rölakan rugs with patterns of sound waves were created in a collaboration between the architectural trio Mårten Claesson, Eero Koivisto, Ola Rune and Märta Måås-Fjetterström AB in 2006. Three different sounds gave shape to the rugs' patterns - the sound of a broadband, the sound of a trout and the sound of a satellite landing on a planet. Images of sound waves were digitally processed into rug patterns by the architects and interpreted into woven rugs by art weavers at the MMF workshop in Båstad in several different sizes and in different colour schemes.