Additive Synthesis Example 5
Same as "AdditiveSynthesisExample4" but utilising a time-varying signal generator to modulate the amplitudes and
frequencies of all oscillators.
Illustrates the method of combining single oscillators (the orange blocks) to create a spectrally rich output (i.e. "additive
synthesis"). Each oscillator generates a tone at a user-defined frequency and amplitude. In this example, the default tones
are all sinusoidal. The nominal frequencies and amplitude are adjusted in the Constant Control Generators, and
are all modulated (via the respective Multiply Controls blocks) by the time-varying (default triangular) signal from the Combo
Control Generator, resulting in a "breathing" spectrum. Note that the system could easily be generalised such that the
individual oscillators could each have their own frequency and amplitude control signals (i.e. not just coming from a single
modulating source).
The Control Thru block is used so that the modulating source (i.e the Combo Control generator in this example) can be
easily changed without having to re-connect all the cables.
The Spectrum Analyser clearly displays the time-evolution of the spectrum. The lateral motion of the "spikes" corresponds
to the time-variation of the harmonics of the signal caused by the modulation.
