ARP2600 - Fundamentals of Music Technology - Cyborgstudio.com

SECTION FIFTEEN: THE ARP SEQUENCER - 123EXPERIMENTS FOR SECTION 15: THE ARP SEQUENCER1. Route the output of the sequencer to all three VCOs on the 2600 using the multiple. Create a standardpatch. Connect the sequencer’s CLOCK OUT jack to the S/H GATE jack and set the S/H GATEswitch to the lower position. Connect the keyboard’s CV output to the CV input on the sequencer.Create a basic 16 step sequence using the techniques described in this section. Whateffect does the keyboard have on the sequence? Experiment with the START/STOP, RESET,and STEP controls, both while the sequencer is running and when it has stopped.2. While conducting experiment #1, switch to two sequences of eight steps each. Use the first eightsteps to control the frequency of the VCOs, and use the second eight steps to control the VCF’scutoff. It may be more effective to use the unquantized output for controlling the filter.3. Repeat experiment #3, but this time, create a sequence using the unquantized output to control thefrequency of the oscillators. Which procedure is easier? What is the advantage to the methoddescribed in this experiment?4. Repeat experiment #2, but this time, use the second eight steps to control the VCA’s gain. Is this aseffective as #2? Which control input, works best for this purpose, linear or exponential?5. Create a patch in which just white noise is fed into the VCF. Add about 60% resonance, and use thesequencer to control the filter’s cutoff. Add a touch of reverb. What does this sound like? Couldsomeone have gotten an idea for a drum machine in this way?6. Use the 2600’s internal clock to drive the sequencer by connecting the INTERNAL CLOCK OUTjack to the sequencer’s STEP input jack. Stop the sequencer before making this connection, orboth clocks will try to control the sequencer at once. Why does this work?