Iannis Xenakis - Persepolis + Remixes Edition I ASP 2005
”Disc 2 of this recording contains nine remixes of Persepolis by an international cast of avant-garde musicians, transforming Xenakis' original work in entirely distinct contexts, imbuing it with compellingly new meanings. Otomo Yoshihide, Merzbow, Ryoji Ikeda, and Construction Kit contribute Japanese readings, while Spanish artist Francisco Lopez, Polish musician Zbigniew Karkowski and German Ulf Langheinrich bring the so-called noise from Europe. Americans Antimatter and Laminar round the global aspect of this collection out by providing their own compelling takes on the original. Despite their distinctiveness, what unites all of these remixes is a shared sense that all great works of art can transcend the contexts in which they were first conceived in order to explore, and perhaps fulfill their greater purpose.”

"... now consider the following map:
F : [-π/2, π/2] × [0, 4] → (-1, 1)
(x, r) → sin(rx)
The iterated discrete form is
x
n,i = sin(ri xn-1,i)

The dynamics of the iterated sine map could be graphically
rendered by tracing the n-th iterate of some x
0 while linearly
increasing r (this is the usual method for tracing the well-known
“bifurcation diagram”, a visual characterizion of nonlinear
dynamics). Figure 1 shows the 5th iterate of the sine map model, in
the region r=[3,4], x
0= [0.1, 0.1] (a single “slice” in the phase
space). Figure 2 shows the 7th iterate in the very same region.

Exploring the phase space:
The output of the particular FIS model depends on the orbit traced
in the iterated process phase space [-π/2, π/2] × [0, 4] or a region
within it. Figure 4 is an approximate graphical rendition of the
region [0,1] × [2,4] as relative to the 5th iterate. In general, with
any FIS model, the output signal is coincident with the path traced
by “stepping through” such an uneven terrain, with its hills and
valleys.

Indeed, for any monoparametric map, the orbit is defined as the
coupling of the two series, r
i and x0,i. The time series xn,i is then a
digital audio signal resulting from that coupling. The waveform
shape is determined, among other things, by the orbital velocity
across the phase space.

Broadly speaking, r determines the kind of waveform shape in
the sound signal, ranging from very smooth curves (e.g. r = 2) to
more intricate oscillations (e.g. r = 4). Many possibilities are
included in between, as due to either bi- or multi-periodic cycles
(limit-cycle attractors), or wild aperiodic oscillations (strange
attractors). The latter signals always include some continuing
frequency- or phase-modulation component."

Di Scipio, A. "Syntheis of Environmental Sound Textures by
Iterated Nonlinear Functions", DAFx99, NTNU, Trondheim,
Dec. 9 - 11, 1999.



Disc 1:

1. Iannis Xenakis : Persepolis (GRM Mix) 1h (00:42)

Disc 2:


1. Otomo Yoshihide : Persepolis (Otomo Yoshihide remix) (9:20)
2. Ryoji Ikeda : Per Se (8:35)
3. Zbigniew Karkowski : Doing By Not Doing (15:12)
4. Antimatter : Persepolis (Antimatter mix) (9:59)
5. Construction Kit : Glitché (5:00)
6. Francisco López : Untitled #113 for Iannis Xenakis (10:05)
7. Fred Szymanski, A Laminar project : Whorl (7:05)
8. Merzbow : Persepolis (Merzbow mix) (7:01)
9. Ulf Langheinrich : Persepolis (Ulf Langheinrich mix) (7:34)

Available at:
http://www.asphodel.com/releases/view.php?Id=79

Review in the Village Voice
http://www.villagevoice.com/music/0245,sinker,39661,22.html