11_Worksheet - Name Worksheet 11 turn in on 4/30 Date We...

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Name ___________________ Date _____________ Worksheet 11 - turn in on 4/30 We have now briefly studied the following synthesis topologies: a. Additive Synthesis b. Subtractive Synthesis c. AM Synthesis (specifically Ring Modulation) d. FM Synthesis 1. Which of these topologies creates the richest harmonic spectrum with the least number of oscillators (ie: which of these is most efficient)? _______________ 2. Which of these topologies works by filtering a sound source that has a rich harmonic spectrum? _____________ 3. Multiplying audio signals together is which of these topologies? _________________ 4. Adding audio signals together is which of these topologies? _________________ 5. Which of these methods produces vibrato (variations in pitch) at sub-audio frequencies? _________________ 6. Which of these topologies produces tremolo (variations in amplitude) at sub-audio frequencies? ________________ 7. In FM synthesis the Modulation Index is a ratio of the modulation depth to the modulation frequency (expressed by the equation: Mod. Index = Mod. depth / Mod. freq. Explain what modulation depth is.
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