ARP2600 - Fundamentals of Music Technology - Cyborgstudio.com

016 - SECTION TWO: VCO-1EXPERIMENTS FOR SECTION TWO:1. Listen to the raw sawtooth output by patching oscillator directly to an input on the mixer (yourteacher can help you with this). Describe the timbre.2. Listen to raw square output by patching oscillator directly to an input on the mixer. Describe thetimbre. CD track 013. How else can the timbre the VCO is producing be changed without moving the patch cord?4. Patch both wave outputs into the mixer. Is it possible to hear both timbres at once?5. Control the frequency of VCO-1 by moving the INITIAL FREQUENCY slider. Try to play a simplesong. Is this and effective way to control the frequency of an oscillator? Now control the pitchusing the FINE TUNE slider.6. While listening to either output of VCO-1, play the keyboard and notice that VCO-1’s pitch changes.What is occurring here?7. Create a redundant patch by connecting the keyboard’s CV output to the FM input labeled “KYBDCV”. Notice that this has the same effect as the normal in experiment #6.8. Insert a dummy plug into the FM control input labeled “KYBD CV” on VCO-1 and play the keyboard.What is occurring now?9. Put VCO-1 in LF mode using the Audio/LF switch. Lower the initial frequency slider so that it isopen only about 1/4. What sounds do you hear when listening to the saw wave? When listeningto the square wave?10. After conducting experiment #9, try playing the keyboard. What happens and why?11. Starting in the sub-audio range (LF mode), slowly bring VCO-1’s frequency into the audio range.Notice the point at which one can first hear a tone. CD track 0312. Zero VCO-1, then practice frequency modulation on VCO-1 by using a dummy plug to break thekeyboard CV normal on the left most FM input. Then patch the Keyboard CV output to one ofthe other FM inputs and fully open the slider above that jack. How is this not as desirable asusing the normal from the keyboard CV? What happens if you set the slider in a position otherthan fully open or fully closed? What is noticeable about the pitch even when the slider is fullyopen?13. How many notes can VCO-1 produce at one time?