ARP2600 - Fundamentals of Music Technology - Cyborgstudio.com

SECTION THREE: VCO-2 - 029REVIEW QUESTIONS FOR SECTION THREE:1. Compare and contrast VCO-1 and VCO-2.2. Describe the timbre of the sine, saw and square waves, and tell why it is difficult to describe thetimbre of the pulse wave.3. Explain how duty cycles are expressed numerically, and why human ears can’t tell the differencebetween 10% and 90%. Describe the relationship of square and pulse waves.4. Name the six parameters of a basic frequency modulation patch and describe what effect changingthe value of each has on the resulting sound. Draw a simple diagram of the patch.5. Why is vibrato musically useful?6. Tell which outputs are in phase with each other, and which outputs are out of phase with each other.7. How did calibration change as the ARP 2600 evolved?8. Draw a simple diagram of a PWM patch.9. Describe the technique used for tuning two oscillators together and define and describe the phattuning technique.10. State why it is desirable to use two different oscillators to produce two waveforms.11. Tell what is meant by ‘tuning in intervals’ and state why this is a highly useful technique.12. Discuss the voltage ranges of the triangle, sine, and pulse waves produced by VCO-2.TERMS TO KNOW:AttenuationCancellationDuty CycleModulation DepthModulation RatePhasePhase AnglePhat TuningPulse WavePulse WidthPulse Width ModulationPWMReinforcementSidebandsSine WaveSweepTriangle WaveVibrato