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Overview (taken from SoS-E manual) What is it? The Sound of Shadows (SoS) is a voltage-controlled (VC) digital delay module based around the PT2399 echo IC from Princeton Technology – which was, by the way, originally designed for Karaoke equipment. The SoS is essentially two separate modules: a delay and a voltage-controlled amplifier (VCA).
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Overview (cont.) Controls Rate: This controls the delay clock rate, which in turn controls how fast the delay steps through its memory array and thusly the amount of delay. Clockwise rotation increases the rate (which decreases the delay time), counter-clockwise decreases the rate (which increases the delay time).
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Overview (cont.) Feedback: This works fig.1 normally, positive increases feedback, negative decreases same. VCA: Same as feedback, positive CV increases the output level, negative attenuates it. Signal in Input: This kind important for a delay unit: you need a signal to delay, or else they’re somewhat dull effects.
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