Korg PS60 Filter

Filter

Filteringcanmakesubtleordramaticchangestotheoscilla‐

tor’stimbre.Eachoscillatorhastwomultimoderesonantfil‐

ters,AandB,aswellasadedicatedfilterenvelopeand

keyboardtrackinggenerator.

Thesepagesletyoucontrolallaspectsofthefilters.Among

otherthings,youcan:

•Adjustbasicsettingsforeachoscillator��sfilters,

includingrouting,modes,cutoff,resonance,etc.

•Setupfiltermodulation,includingkeyboardtracking,

thefilterenvelope,LFOmodulation,andAMScontrol.

Notethatwhenthe“OscillatorMode”issettoSingle,only

Oscillator1’sfiltersareactive;thepagesforOscillator2’sfil‐

terswillbegrayedout.

ThispagecontainsallofthebasicsettingsforOscillator1’s

FilterAandFilterB.Forexample,youcan:

•Setupthefilterstoproduceasingle12dB/octfilter,dual

12dB/octfiltersineitherserialorparallelrouting,ora

single24dB/octfilter.

•SeteachofthetwofilterstoLowPass,HighPass,Band

Pass,orBandRejectmodes.

Eachoscillatorhastwofilters,FilterAandFilterB.This

parametercontrolswhetheroneorbothofthefiltersare

used,andifbothareused,itcontrolshowtheyarecon‐

nectedtoeachother.

Single:ThisusesonlyFilterAasasingle2‐pole,12dB/

octavefilter(6dBforBandPassandBandReject).Whenthis

optionisselected,thecontrolsforFilterBwillbegrayed

out.

Serial:ThisusesbothFilterAandFilterB.Theoscillator

firstgoesthroughFilterA,andthentheoutputofFilterAis

processedthroughFilterB.

Parallel:ThisalsousesbothFilterAandFilterB.Theoscil‐

latorfeedsbothfiltersdirectly,andtheoutputsofthetwo

filtersarethensummedtogether.

24dB/oct:Thismergesbothfilterstocreateasingle4‐pole,

24dB/octavefilter(12dBforBandPassandBandReject).In

comparisontoSingle,thisoptionproducesasharperroll‐off

beyondthecutofffrequency,aswellasaslightlymoredeli‐

cateresonance.Manyclassicanalogsynthsusedthisgeneral

typeoffilter.

When24dB/octisselected,onlythecontrolsforFilterAare

active;thecontrolsforFilterBwillbegrayedout.