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Cyclo.
Studio album by Cyclo. (Ryoji Ikeda and Carsten Nicolai)
Released	April 2001
Recorded	1999–2001[1]
Genre	IDM, glitch
Length	41:48
Label	Raster-Noton
Producer	Cyclo.
Ryoji Ikeda chronology
matrix (2000) Cyclo. (2001) op. (2002)
Carsten Nicolai chronology
Prototypes (2000) Cyclo. (2001) Ø + noto - wohltemperiert (2001)

Professional ratings

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Allmusic	[2]

. (commonly known as Cyclo.) is the debut studio album by German electronic music project Cyclo., consisting of German musician Carsten Nicolai and Japanese visual and sound artist Ryoji Ikeda, released in April 2001 through Raster-Noton, a German electronic music record label. It was re-released in 2017.^[1]

Cyclo. started as a collaborative research project by Nicolai and Ikeda in 1999, focusing on the visualization of sound. The audio elements of the album would get constructed with varying frequencies that can go beyond the physical range of human hearing, generating hybrid forms of audiovisual art.^[3]

In its first publication, it included a book and CD-rom that offered interactive documentation of the audiovisual material Nicolai and Ideka created. The images in the booklet show the metering of sound bits through acoustic and illustrative potential.^[4]