(67) Analyser l’espace composé dans l’acousmatique multicanal
(68) L’espace tridimensionnel conçu dans un champ multicanal, atteignant souvent 360°, est plus grand que dans un champ stéréophonique. Ainsi, ce domaine est beaucoup plus flexible que le domaine stéréophonique, et se prête à une plus grande variété de formes spatiales – par exemple, des formes circulaires, spirales, serpentines, géométriques – ainsi qu’à une évolution entre les formes spatiales.
4.2. Analyzing composed space in the multichannel acousmatic idiom (67)
The conceptual territory of three-dimensional space in a multichannel field is larger than in the stereo field, often spanning 360°. Therefore, it is inherently more flexible, and thus can more readily support a broader range of spatial forms, for example, those that are circular, spiral, serpentine, or geometric, as well as an evolution between spatial forms. (68)
My analysis and discussion of composed space in the multichannel acousmatic idiom centres on a section of Ether. The bifurcated approach used is similar to the one that I applied to the section of Chat Noir as the section of Ether is also represented by the two-tiered scoring system. Figure 7 is a score template for an octophonic spatial image in Ether.
Figure 7. Score template for the representation of three-dimensional space in Ether [enlarge]
(69) Mon analyse et ma réflexion sur l’espace multicanal composé se concentre sur une section d’Ether. La double approche utilisée (un système de transcription à deux niveaux) est similaire à celle qui a été utilisée pour la section de Chat Noir. La figure 7 est un modèle de partition pour l’image spatiale octophonique d’Ether. La disposition des haut-parleurs correspond à la superposition d’une croix – composée par les canaux 7, 8, 5 et 6 – et d’un rectangle – composé par les canaux 1, 2, 3 et 4.
The loudspeaker layout corresponds to the superimposed shape of a cruciform, depicted by the loudspeakers that deliver channels 7, 8, 5, and 6, which is overlaid with a rectangle, depicted by the loudspeakers that deliver channels 1, 2, 3, and 4. (69) The triangular proportions, between the left and right loudspeakers (channels 1 and 2) and the listener, are represented, however, in a 5:4 ratio due to the limitations caused by the need to create adequate proportions between the eight loudspeakers in the listening room, as well as between the loudspeakers and the listener. The methodology used to discuss spectral space in Ether is identical to the methodology used for the discussion of spectral space in Chat Noir.