Shannon O'Neill

Download

Sound a Day 011 – Korg Study 002 0:08 312 KB

One thing I like about the MS-20 is that you pick up where you left off. There’s no saving and recalling patches. Today’s sound is based on yesterday’s patch, but the input signal has been removed. The repeating notes are played by hand. The built-in ‘modulation generator’ or LFO is set to a descending sawtooth wave, influencing the oscillators and filters, while some envelope modulation gives the notes more presence.

A fairly simple sound, SAD011 could be used as either a one-off effect or a loop. It could also be good slowed down &/or backwards. I might play around with it some more…

Download

Sound a Day 010 – Korg Study 001 0:25 998 KB

For several years I’ve had the idea of doing a collection of ‘Korg Studies’ – short pieces that explore a particular sound or technique on the Korg MS-20 synth (and also the Korg mini-KP Kaoss Pad). Here is as good a place as any to start.

KS001 demonstrates my usual technique of using an external input to drive the control voltages. In this case it’s a random song playing on my iPhone. There are two square wave oscillators an octave apart, their pitches mapped to the mod wheel. One is modulated by the amplitude and the other by the frequency of the incoming signal. The low-pass filter is also being heavily modulated. When the incoming sound hits a certain level it triggers the envelope generators, which have a percussive shape. Continuous tweaking of parameters is done to shape the sound into something interesting.

These are techniques that I’ve developed and refined over the past few years of working with the Splinter Orchestra. I was also very impressed by Asmus Tietchens‘ performance at Liquid Architecture this year, and I think his approach to the synthesiser may have influenced me recently.