How does frequency modulation synthesis work?
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FM synthesis is short for frequency modulation synthesis.
Simply put, FM synthesis uses one signal called, the “modulator” to modulate the pitch of another signal, the “carrier”, that’s in the same or a similar audio range.
This creates brand new frequency information in the resulting sound, changing the timbre without the use of filters.
For clarity’s sake, “timbre” is the distinctive character of a sound. The timbre of a sound depends upon its frequency content.The frequencies present in a piano sound, for example, are different than those in a guitar sound, even at the same pitch and level. This is what makes them sound different.
As you can see in the diagram below, a complex waveform is created using only two sine waves.
Simply put, FM synthesis uses one signal called, the “modulator” to modulate the pitch of another signal, the “carrier”, that’s in the same or a similar audio range.
This creates brand new frequency information in the resulting sound, changing the timbre without the use of filters.
For clarity’s sake, “timbre” is the distinctive character of a sound. The timbre of a sound depends upon its frequency content.The frequencies present in a piano sound, for example, are different than those in a guitar sound, even at the same pitch and level. This is what makes them sound different.
As you can see in the diagram below, a complex waveform is created using only two sine waves.
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