This document provides an overview of the key components of a synthesizer: - Oscillators generate basic waveforms that are the raw material for sound creation. Common waveforms include sine, sawtooth, triangle, and square waves which have different harmonic content. - Filters pass certain frequencies of the basic waveform to sculpt and soften the sound. Filters are usually low pass, high pass, band pass, or band stop and determine a synthesizer's characteristic tone. - Envelopes control signal levels over time, modulating parameters like oscillator volume and filter cutoff frequency. Envelopes shape the attack, decay, and release of a sound.