Guest Perspectives

Evocation of Imaginal Space

For nearly fifty years, the exploration of sound in space has been one of the central concerns of my work as a composer. While listeners often think of music primarily in terms of melody, harmony, rhythm, or timbre, I have long regarded space itself as a compositional material. The placement of sound, its perceived distance, its movement, its relationship to an acoustic environment, and its ability to create a sense of immersion are every bit as important as pitch or texture. This is especially true in ambient music, where the experience of inhabiting a sonic world frequently takes precedence over traditional musical narrative.

My involvement with sound spatialization began in 1976 when I first started working with four-channel tape recorders. These early experiments were modest by contemporary standards. Most involved fixed-channel arrangements and simple amplitude panning between adjacent speakers. Occasionally, when a quadraphonic panner was available, sounds could be distributed more freely among all four channels. Even with these limited means, I became fascinated by the possibility that music might exist not simply as an object projected toward a listener but as an environment within which a listener might dwell.

A significant transformation occurred in 1981 when I became involved with the Center for Music Experiment (CME) and the Computer Audio Research Laboratory (CARL) at the University of California, San Diego. At that time, CME and CARL represented one of the most advanced centers for computer music research in the world. Eventually I joined the staff as a research assistant, and it was there that I first engaged deeply with sophisticated approaches to sound spatialization.

Among the tools available was the Space Unit Generator within the cmusic sound synthesis environment developed by F. Richard Moore and others. The Space UG modeled a room-within-a-room, simulating a four-channel acoustic environment complete with angular positioning cues, loudness relationships, and both early and late reverberant reflections. Computationally expensive for its time, it nevertheless provided remarkably convincing spatial results. More importantly, it demonstrated that acoustic space itself could become an active compositional domain rather than a passive container for musical events.

As technology evolved, so too did my engagement with spatial audio. Over the years I explored vector-based panning systems, binaural rendering, surround sound production, Ambisonics, and wavefield synthesis. Today my principal focus is object-based audio production, particularly using Dolby Atmos formats such as 5.1.4 and 7.1.4. These technologies allow an unprecedented degree of precision in defining and controlling spatial relationships within a composition.

My workflow, however, remains rooted in composition first. Most works begin in stereo. This is largely a practical decision, but it is also an aesthetic one. Working initially in stereo allows me to concentrate entirely upon the compositional imperatives themselves: the musical materials, the expressive nuances, the evolving formal structure, and the emotional trajectory of the work. At this stage, I am concerned with what the music wishes to become rather than where it will ultimately reside in space.

Only after the composition and primary mix have been established do I begin the process of spatialization. Multiple stems are generated from the stereo mix and prepared for a second stage of production. These stems become the raw material from which the spatial architecture of the piece is constructed.

My primary studio environment is configured for 5.1 monitoring, allowing direct surround-sound evaluation. For larger channel formats, such as 22.2 systems, I often employ binaural monitoring using sophisticated HRTF modeling to simulate the intended spatial domain. This permits accurate spatial decision-making even when large-scale loudspeaker arrays are unavailable.

Although object-based audio enables extensive movement and animation of sound sources, I generally avoid movement for its own sake. My approach is often architectural rather than theatrical. Many sounds occupy relatively stable positions within the spatial field. Movement is introduced selectively and only when it contributes meaningfully to the expressive or perceptual goals of the composition. The result is less a spectacle of motion and more a carefully shaped acoustic ecology.

The final production stage involves rendering the work into multiple delivery formats. Some recordings remain available in discrete surround formats such as 5.1 or octophonic presentations. Increasingly, however, new recordings are released in three forms: conventional stereo, binaural renderings, and multichannel immersive formats, most commonly Dolby Atmos. Ambisonic renderings are also employed where appropriate, allowing spatial information to be encoded and preserved for a wide range of playback systems.

Ambient music is uniquely suited to these approaches. Time and frequency have always been central to the creation of ambient environments, and timbre often functions as a primary structural element. Yet spatial design adds another dimension entirely. Depth, distance, directionality, and envelopment become compositional resources capable of shaping the listener’s experience as profoundly as harmony or texture.

Indeed, one might argue that ambient music has always been concerned with the experience of inhabiting sound. From its earliest formulations, ambient music sought to create environments rather than narratives. The listener enters a world rather than follows a story. Spatialization extends this aspiration naturally and powerfully. Sounds are no longer merely arranged through time; they are arranged through space. The resulting sonic ecology becomes a place of listening.

In my own work, spatialization serves purposes that extend beyond realism or immersion. Influenced by acousmatic traditions and by concepts such as Henry Corbin’s Mundus Imaginalis, I have become increasingly interested in what might be called imaginal space. These are spaces that do not correspond to physical reality. They are spaces that exist only in perception and imagination.

Within such environments, sounds may appear simultaneously near and distant. Acoustic perspectives may shift without obeying physical laws. Spatial relationships become symbolic rather than literal. One enters architectures made entirely of sound. In works such as Elemental and many of my other acousmatic and ambient compositions, spatialization becomes a means of revealing these imaginal domains.

This, for me, is perhaps the most profound function of spatial audio. It is not merely the simulation of acoustic reality but the creation of alternative realities. Through carefully designed spatial relationships, sound becomes capable of opening contemplative spaces that transcend ordinary listening. The listener is invited not simply to hear but to inhabit an imaginal landscape.

Ambient music benefits greatly from this possibility because so much of its material already operates in the foreground, middle ground, and background simultaneously. Spatialization clarifies these relationships while enhancing their poetic and psychological significance. Dense textures become more transparent. Subtle timbral details emerge. The sense of immersion deepens. Most importantly, the listener becomes situated within the music itself.

As immersive audio technologies continue to evolve, I believe we are witnessing not merely a technical development but the natural extension of ambient music’s deepest aspirations. The movement from stereo toward surround sound, Ambisonics, binaural rendering, and object-based audio represents a continuing effort to transform sound into inhabitable space.

At Aucourant Media Productions (www.aucourantrecords.net), this understanding informs not only my own creative work but also the services we provide to composers and recording artists. We are actively engaged in helping artists explore the possibilities of immersive audio by transforming existing stereo productions into surround sound, Ambisonic, binaural, and object-based formats. Our goal is not simply to create technical novelty but to discover whether spatialization can reveal new expressive dimensions within a work.

The process begins with an evaluation of existing recordings and source materials. Working closely with artists, we develop immersive spatial presentations that preserve the integrity of the original composition while expanding its acoustic presence and depth. Finished projects may be delivered as surround sound productions, Dolby Atmos releases, binaural headphone experiences, or Ambisonic renderings suitable for a wide variety of playback platforms.

Importantly, independent artists are able to explore these possibilities without financial risk. Aucourant Media Productions does not charge upfront fees for artists wishing to investigate immersive audio approaches. Instead, artists have the opportunity to test these techniques and evaluate whether they genuinely enhance their creative vision before making further commitments.

Those interested in learning more about this work are encouraged to visit the Aucourant Media website, where detailed information about our production methods, immersive audio workflows, and artist services is available. By making these technologies accessible to independent musicians and composers, we hope to encourage broader exploration of spatial audio as an expressive artistic medium.

The future of ambient and electroacoustic music will undoubtedly continue to be shaped by developments in spatial audio. Yet for me, the essential goal remains unchanged from those first quadraphonic experiments nearly half a century ago: to create sonic environments that invite listeners into deeper experiences of perception, imagination, contemplation, and wonder.

— Robert Scott Thompson, June 4, 2026