How a Table of Numbers Becomes a Note
In a wavetable synthesizer, a table is a short sequence of numbers that describes the shape of a repeating sound wave. When you press a key, the synthesizer’s oscillator reads through those values over and over. How quickly it cycles determines the pitch: faster cycles sound higher, slower ones lower.
The numbers are not sound by themselves. A digital-to-analog converter (DAC) turns them into a changing electrical signal, which a speaker moves back and forth to create pressure waves in the air. The speaker is effectively tracing the waveform encoded in the table.
From a Simple Wave to an Orchestral Pad
A table can encode a smooth tone or a more complex shape with extra harmonics—the higher-frequency components that give sounds their distinctive color. The synthesizer can reshape that tone with filters, which reduce or emphasize parts of the frequency range, and with envelopes that control how it swells and fades.
An orchestral-sounding pad may combine several oscillators, detune them slightly, and let the sound build gradually. The result can resemble a sustained string section, even though its starting point is a repeating numerical pattern rather than a recording of an orchestra. The table supplies the raw waveform; the synthesizer’s processing turns it into a changing musical sound.
