Wave Edge is inspired by the I Ching hexagram number 4, Youthful Folly, comprised of the trigrams for water and mountain, which portrays a spring bubbling up at the foot of a mountain.
Wave Edge is available on the Cambridge Street Records and Wergo CD Digital
Soundscapes, as
well as the Cambridge Street Records album Sequence of Earlier
Heaven.
Mapping a trajectory onto
radial positions and increasing distances (pre-graphic screens!)
Trajectories realized with
overlapping linear envelopes.
Stereo
spectrogram
of the opening of the work
Note:
Sound examples of the various elements of the piece are
available on the WSP Database (truax@sfu.ca for guest access).
Reference:
B. Truax, "Sequence of Earlier Heaven: The Record as a Medium for the Electroacoustic Composer," Leonardo, 20(1), 1988, 25-28.
Wave Edge is the first work to be realized with the composer's PODX system for sound synthesis and composition in the Centre for the Arts at Simon Fraser University using the DMX-1000 Digital Signal Processor. The synthesis technique used is that of frequency modulation (FM) of arbitrary waveforms. A spatial trajectory program developed by the composer was used to map specific paths for the various layers in binaural stereo.