7. Sound Synthesis with Spectral Envelopes

In the application of spectral envelopes to sound synthesis , a spectral envelope called the modulator  is applied to an input sound to yield an output sound, according to some parameters, as shown in figure 6.1. If the input and output sound are represented as sinusoidal partials, then additive synthesis is to be applied as described in section 6.1. If the sounds are given as a sampled signal, filtering has to be applied, as explained in section 6.2.

  

Figure 6.1: Synthesis with a modifying spectral envelope called the modulator