(compMus2) Quiz Review: Digital Oscillators and Modulation Synthesis

For the short quiz on digital oscillators and modulation synthesis, you should know the following:

Digital Oscillators

• table lookup synthesis
• advantages/disadvantages of both table lookup and generate on demand waveform synthesis
• how you change frequency in table lookup synthesis

General Modulation Synthesis Parameters

• audio rate modulation
• sidebands
• negative frequencies

Ring Modulation

• What parameter is being modulated, and how?
• The types of signals used
• Output result (frequencies present in the signal spectrum)

Amplitude Modulation

• What parameter is being modulated, and how?
• The types of signals used
• Output result (frequencies present in the signal spectrum)

Frequency Modulation 

• What parameter is being modulated, and how?
• The types of signals used
• Output result (frequencies present in the signal spectrum)
• M:C ratios relating to spectra (and specific frequencies present in spectrum)
• Index of Modulation relating to the number of sidebands
• Multi-modulator and Multi-carrier synthesis, and their musical uses

Be able to identify the modulation synthesis being demonstrated by an instrument flow chart.