Modulation with SlopeIn addition to the MULTIPLY Panel Control the SLOPE circuit could act as a “ghosthand” to adjust the MULTIPLY Panel Control in your absence. A gold wire indicatesthe SLOPE circuit is able to modulate the MULTIPLY circuit via a Normalization at theMULTIPLY CV IN Jack. This means that with nothing patched to the MULTIPLY CV INJack, the SLOPE Signal OUT will pass through the MULTIPLY CV IN Jack to theMULTIPLY CV Attenuvertor and from there it goes on to modulate the MULTIPLYcircuit. One way to hear this is to set the SLOPE circuit to CYCLE by [PRESSING] theCYCLE Button until it . Adjusting the RISE, FALL, Vari-Response, andMULTIPLY CV Attenuator and Panel Controls alters the way the timbre of the0-COAST is modulated. The CV Attenuvertor is capable of adding and subtractingfrom the Panel Control with the “OFF” point being at 12 o’ Clock. The SLOPE andMULTIPLY Activity Windows [light] to indicate the activity (Figure 42). Before youread on to learn the functionality of these controls, take a moment to experimentand search for unfound sounds.The SLOPE may be TRIGgered or set to Self-CYCLE. Triggering creates a single cycle: a single shot function starting at 0V,traveling up to 8V and then immediately beginning the descent back to down to 0V. We will learn more about TRIGgeredSLOPEs in the second half of this manual. Begin by setting SLOPE Self-CYCLE ON. This creates a continuous Function startingat 0V, traveling up to 8V, and then immediately beginning the descent back to 0V, repeating this behavior until the the CYCLEButton is [PRESSED] again to disengage Self-CYCLE. This type of Function is often called a Low Frequency Oscillator or LFO:an important element of both EAST and WEST Coast synthesis techniques.RISE sets the amount of time the circuit takes to travel up to the maximum voltage level. Setting RISE to be more clockwiseincreases the time it takes for the SLOPE to reach the maximum level, thus slowing down the LFO.FALL sets the amount of time the circuit takes to travelback down to the minimum voltage level. Setting FALL tobe more clockwise increases the time it takes to for theSLOPE to reach the minimum level, again, slowing downthe LFO.These two controls are also useful for determining theshape of the LFO. For example, a fast RISE Time with aslow FALL Time results in a Saw shape. If RISE and FALLare set to similar times, it results in a Triangle shape.(Figure 43).Vari-Response shapes these rates of change (i.e. RISE/FALL) to be Logarithmic, Linear, or Exponential (Figure44). With LOG response, the rate of change DECREASES as the voltage INCREASES. With EXPO response, the rate of changeINCREASES as the voltage INCREASES. LINEAR response has no change in rate as the voltage changes. The Vari-Responsecontrol is also useful to increase or decrease the overall time or speed of the LFO. Setting Vari-Response more clockwise tobe more Exponential increases the LFO rate, while setting it to be more linear decreases the LFO rate.22Figure 43 RISE and FALL Times; Linear ResponseFigure 42: MULTIPLY and SLOPE LED ActivityLINEAR FALL EXPONENTIAL FALLFigure 44: Vari-RESPONSE SettingsNote: This assumes the Rise Panel Control is set Full CCW so it is not affected. Also, this assumes FALL is set to around10 o’clock.LOGARITHMIC FALL
