How does subtractive synthesis shape an electronic sound?

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In the context of electronic music, subtractive synthesis is a method of sound design that shapes audio by starting with a complex, harmonically rich signal and removing specific components to achieve a desired timbre.1

Typically, this process begins with a signal—such as a sawtooth wave—that contains a fundamental tone along with all of its related overtones. By applying filters to this signal, a musician or composer can subtract unwanted frequencies or harmonic components. This reduction process allows for precise control over the final tonal quality, enabling the creation of sounds that range from bright and sharp to dark and mellow.1

This technique was a foundational element of early music synthesizers, such as those developed by Robert Moog, and stands in contrast to additive synthesis, which constructs complex tones by layering pure sine-wave signals together.1