Synths or synthesizers are electronic musical instruments that generate sound by creating and manipulating waveforms. They are incredibly versatile and can produce a vast range of sounds, from imitating traditional instruments (like pianos or strings) to creating completely unique, futuristic tones. Most synths provide four key functions / components:
- Oscillators: The core of a synthesizer, oscillators generate basic waveforms (sine, square, triangle, sawtooth) that form the building blocks of sound
- Filters: Used to shape the sound by removing certain frequencies (e.g., making it brighter or darker).
- Envelopes: Control how the sound evolves over time (e.g., attack, decay, sustain, release).
- Modulation: Adds movement or variation to the sound, often using low-frequency oscillators (LFOs) to create vibrato, tremolo, or rhythmic effects.
Synths can be of three types:
- Analog: Use analog circuits to generate sound (e.g., classic Moog synths). Known for their warm, organic tone.
- Digital: Use digital signal processing (DSP) to create sounds, allowing for more complex and precise sound design.
- Software Synths: Virtual instruments running on computers, replicating the functionality of hardware synths.