Access VIRUS|POWERCORE User's Reference Manual
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28The Virus also has a sub-oscillator, which is used to add extra bass to a sound by tracking thepitch of oscillator 1, only 1 octave lower.In addition to the 3 oscillators and sub-oscillator, there is also a noise generator. This gener-ates ‘white’ noise, which sounds rather like the noise a television makes when you unplug theaerial. This is useful for creating snare drum sounds, sound FX such as wind or surf, or simplyfor adding warmth to the sound.As if this wasn't enough, the Virus PowerCore is also capable of ring modulation (ring mod)and FM (frequency modulation), both of which can be used to add extra harmonics and over-tones, useful for creating more complex timbres like bells and electric pianos.MixerThis is where the outputs ofthe oscillators, noise, andring modulator are balancedbefore the resulting mixture issent to the filter section.FilterThis is an extremely important stage of any subtractive syn-thesizer, and the Virus PowerCore is no exception to thiswith it’s dual filters, each of which can be assigned to one of4 different types.A filter is used to remove certain components (frequencies)of a sound, whilst allowing others to pass freely. Forinstance, a lowpass filter will remove all the frequencies above a user-definable 'cutoff' fre-quency, whilst all those below will pass - geddit? The cutoff can be adjusted in realtime,which results in a 'filter sweep' - the life-blood of many famous synth sounds.indigo powercore manual.book Page 28 Thursday, April 22, 2004 12:23 PM |
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