Frequency Modulation Synthesis

FM: More Carriers and Modulators
Yield Better Spectral Fits

  • FM vocal model places a carrier near each formant
    resonance, and modulates all carriers with a
    common oscillator at the voice fundamental pitch.

  • Instruments with a noisy attack and exponential
    decay of sinusoidal partials are modeled well
    with one simple FM pair for the attack, and
    another pair for the decay. The nature of FM lends
    itself to the higher harmonics or partials dying
    away more rapidly than the lower spectral components.