What is additive synthesizer?
In additive synthesis, you start out with nothing and build a sound by combining multiple sine waves of differing levels and frequencies. As more sine waves are combined, they begin to generate additional harmonics. In most additive synthesizers, each set of sine waves is viewed and used much like an oscillator.
Do hardware synths sound better?
The Benefits of Hardware
While not every synth is the same, and this varies depending on the type of synthesis, hardware can have a fuller and richer sound when compared to software. This is certainly true of the Moog Grandmother that we used here. Hardware can also be tactile, with knobs to adjust.