A subtractive synthesizer is a type of synthesizer that uses filters to subtract harmonics from a waveform to create a desired sound. It begins with a complicated sound, like a sawtooth, square, or noise waveform, and then employs filters to eliminate particular frequencies or harmonics. Because the harmonics are being subtracted from the original waveform, this process is known as “subtraction.”
The low-pass filter is the most typical type used in subtractive synthesis. It attenuates or blocks out higher frequencies while allowing low frequencies to pass through. This kind of synthesis also employs high-pass, band-pass, and band-stop filters. Envelopes also gradually alter the sound’s amplitude and other properties.
One of the most popular synthesis methods in electronic music is subtractive synthesis, which also serves as the foundation for many iconic analog synthesizers like the Moog Minimoog and Roland SH-101.
One of the most flexible sound design techniques is a straightforward and intuitive synthesis method that enables the user to shape and sculpt the sound in various ways.
To produce a desired sound, subtractive synthesis uses filters to remove harmonics from a waveform. It begins with a complicated waveform, like a sawtooth, square, or noise waveform, and then employs filters to eliminate particular frequencies or harmonics. The low-pass filter is the most popular filter used in subtractive synthesis. It is one of the most widely used synthesis techniques in electronic music, is easy to understand, and serves as the foundation for many iconic analog synthesizers.
Examples
- Moog Minimoog
- Roland SH-101
Synthesizer Online 