Fm synthesis ratios

Keep in mind: FM synthesis uses ratios to change pitch, instead of coarse and fine-tuning (semitones and cents.) A doubling of the ratio is like raising the pitch by an octave. For instance, at ratio 1.000, the operator will play the note pressed by the keyboard.

1. What is FM synthesis best for?
2. What are significant sidebands in FM?
3. How are sidebands calculated?
4. What are sidebands in FM synthesis?

What is FM synthesis best for?

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. Aggressive bass that punches through the mix.

What are significant sidebands in FM?

The number of significant sidebands in FM is large. FM has better noise immunity.FM is rugged/robust against noise. The quality of FM will be good even in the presence of noise. The bandwidth required by FM is quite high.FM bandwidth = 2 [Δf + fm].

How are sidebands calculated?

For example, if C:M is 1:2, that is, the modulator is twice the frequency of the carrier, then the first upper sideband is: C+M = 1+2 = 3. The second upper sideband is: C+2M = 1+(2x2) = 1+4 = 5. Another way to get the second sideband is to add M=2 to the value of the first sideband which is 3; i.e. (C+M) + M = 3+2 = 5.

What are sidebands in FM synthesis?

That's the basis of FM synthesis. The new frequencies are called sidebands, and they can appear above and below the carrier frequency. The number, frequency and amplitude of the sidebands are controlled by changing the ratio of the modulator frequency to the carrier frequency, as well as the amount of modulation.