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Description

Electroacoustic music is a broad art-music tradition that integrates recorded acoustic sound and electronically generated or processed sound into coherent musical works.

It privileges timbre, gesture, texture, and spatialization over conventional melody-and-harmony song forms, often employing tape manipulation, synthesis, live electronics, and computer-based signal processing.

Works are frequently composed for fixed media (stereo or multichannel loudspeakers) and may also involve live performers who are transformed in real time.

Concert presentation typically emphasizes spatial diffusion and immersive listening, and the repertoire spans concert works, radio pieces, installations, and soundscape compositions.

History
Origins (1940s–1950s)

Electroacoustic music emerged in the late 1940s from two complementary streams: musique concrète in Paris (centered on recorded sound objects, tape splicing, and turntables under Pierre Schaeffer and later Pierre Henry) and elektronische Musik in Cologne (focusing on sounds produced by oscillators and filters under Herbert Eimert and Karlheinz Stockhausen). Parallel developments included Edgard Varèse’s pioneering tape work and early studio infrastructures such as the RTF/GRM in Paris, WDR Studio in Cologne, the RAI Studio di Fonologia in Milan, and later the BBC Radiophonic Workshop.

Expansion and Tools (1960s–1970s)

The 1960s saw rapid growth in techniques (ring modulation, filtering, tape delay) and the introduction of voltage‑controlled synthesizers (Moog, Buchla). Composers explored live electronics (Stockhausen’s Mikrophonie, MEV, and John Cage/David Tudor’s circuits) and spatial composition. Universities and new centers (Columbia‑Princeton, later CCRMA and IRCAM) fostered research, while acousmatic concert practice developed—works meant for loudspeakers rather than traditional notation and instruments.

Digital Era and Aesthetics (1980s–1990s)

The shift to computers enabled sampling, spectral analysis, convolution, granular synthesis, and algorithmic composition. Institutions like IRCAM advanced FFT-based techniques, and composers formalized concepts such as spectromorphology and timbral morphology. Soundscape composition and phonography expanded the repertoire, while diffusion over multi‑loudspeaker arrays became a mature performance art.

Present Day (2000s–present)

Laptop performance, real‑time processing (Max/MSP, SuperCollider), ambisonics, and immersive formats (5.1, 7.1, Dolby Atmos) are common. Electroacoustic practices permeate installations, multimedia, and cross-disciplinary work, influencing ambient, drone, microsound, glitch, and sound art. The field remains a research‑driven, globally networked community with festivals, academic programs, and dedicated labels.

How to make a track in this genre
Setup and Materials
•   Assemble microphones (for field and instrumental recording), audio interface, and a DAW or live environment (e.g., Reaper, Pro Tools, Max/MSP, SuperCollider). •   Prepare a multichannel monitoring chain if possible; electroacoustic music often exploits space with 4–8+ speakers.
Source Gathering
•   Record acoustic sources (instruments, voice, environments, objects) with varied mic techniques to capture diverse timbres and perspectives. •   Curate a library emphasizing spectral variety (impulsive, sustained, noisy, pitched) to enable contrasting morphologies.
Core Techniques
•   Edit and montage: cut, layer, and recontextualize recorded sound to create gesture and narrative. •   Spectral processing: filtering, convolution, and time‑stretching to sculpt timbre and reveal inharmonic detail. •   Granular and microsound methods: clouds, swarms, and textures from tiny sound grains. •   Dynamic shaping: use envelopes, automation, and morphing to articulate gestures and transitions. •   Live electronics (optional): process performers in real time (e.g., delays, pitch/time, spectral freezing) to fuse acoustic and electronic layers.
Structure and Form
•   Think in terms of spectromorphology: how sounds evolve in time (attack, growth, decay) and how textures transform. •   Build form through contrast (impulse vs. drone, dense vs. sparse, dry vs. reverberant) and thematic return via timbral motifs rather than melodies. •   Use silence and negative space to frame events and enhance clarity.
Spatialization and Diffusion
•   Compose with space as a parameter: plan trajectories, depth cues, and focal points. •   Mix for multichannel or create stems for diffusion over a loudspeaker orchestra; rehearse the performance mix as an interpretive act.
Aesthetics and Delivery
•   Prioritize clarity of gesture and timbral focus; avoid over‑processing that obscures morphology. •   Document versions for concert (high headroom, multichannel), stereo release (translation of spatial intent), and installation (site‑specific adaptation).
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