Audio Processes

18 Noise in Synthesis

18.1	Consistent and Inconsistent Signals
18.2	Noise in the Time Domain
18.2.1	Generation and Shaping
18.2.2	Rate-Controlled Random Value Generation
18.2.3	Inconsistent Oscillation
18.3	Noise in the Frequency Domain
18.3.1	Spectral Envelopes
18.3.2	Rate Control and Modulation
18.3.3	Filtering
18.3.4	Applications
18.4	Developing Processes and Learning More

18.1 Consistent and Inconsistent Signals

Most audio synthesis is developed from a view of sound as a combination of sinusoidal frequency partials. There are a number of reasons for this:

• The conventional analysis techniques for determining the constitution of sounds are based on Fourier Transform methods, which produce results related to sinusoidal partials, as described in Chapter 4. These ...