Fm synthesis explained

FM synthesis uses a modulator oscillator and a sine wave carrier oscillator. The modulator oscillator modulates the frequency of the waveform generated by the carrier oscillator within the audio range, thus producing new harmonics. These harmonics are known as sidebands.

1. Why FM synthesis?
2. Is FM synthesis analog or digital?
3. How do you make FM synthesis?
4. Is FM synthesis additive or subtractive?

Why FM synthesis?

FM is a unique style of synthesis that works well for certain sounds. FM synthesis is a method of generating complex timbres by modulating the frequency of one sound with another. FM synthesis works great for these types of sounds: Instruments with complex attack like electric pianos, bells and mallets.

Is FM synthesis analog or digital?

FM synthesis using analog oscillators may result in pitch instability. However, FM synthesis can also be implemented digitally, which is more stable and became standard practice. Digital FM synthesis (implemented as phase modulation) was the basis of several musical instruments beginning as early as 1974.

How do you make FM synthesis?

A common technique in FM synthesis is simply using sine waves to FM each other, like Chowning did at Standford. This can be done with three or more operators, allowing the creation of highly complex waveforms while still offering the control of using simple waveforms. Try various algorithms and find what works for you.

Is FM synthesis additive or subtractive?

Here is some knowledge to have in mind when you are starting your production process, and you can´t choose between this types: To make a bell-like sound, you should reach for Additive or FM. To make a classic, simple, synthetic sound, you should fo for Subtractive.