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Prepare yourself for remake the sound of the most popular electromechanical instrument in the world. In this article we will explain you how to emulate the famous Hammond organ on your synthesizer. The Hammond Organ is the most famous electromechanic instrument we know. It is an electric organ designed to give a low cost alternative to church pipe organs. How it works The Hammond Organ uses additive synthesis to generate its sound via tonewheels instead of electronic oscillators.

Each of the 91 tonewheels generates one of the pitch of the fundamentals or overtones, of the many stops. Each stop can be controlled using the 9 drawbars which represents the most important harmonics, from left to right. 1 – Click on each stop to hear how it sound. Pitch Interval Note 16′ Sub Octave Octave under root 5 1/3′ 5th Fifth over root 8′ Unison Root 4′ 8th Octave over root 2 2/3′ 12th Octave and a fifth over root 2′ 15th Two octaves over root 1 3/5′ 17th Two octaves and a major third over root 1 1/3′ 19th Two octaves and a fifth over root 1′ 22nd Three octaves over root The simplest way to emulate an hammond organ is to use Additive Synthesis, since almost all modern keyboards allows to stack many single sounds in a big combination. Each manufacturer may call it differently (Combi for Korg, Performance for Roland, Multi for Yamaha, Setup for Kurzweil and so on) but they do all the same thing. Now we will start to emulate all nine hammond stops, without taking care (by now) of clicks and leslie that will be covered after. This will be your master template, if your keyboard don’t have all physical controllers needed (sliders, buttons, etc).