Introduction to OASYS
12
thedamperpedalandstrikeakey,thesympathetically
vibratingstringswillalsosound,faithfullyreplicating
thedepthandtransparencyofanacousticpiano.
Stapleensemblesoundssuchasstringsandbrassuse
stereosamplingtocapturetheirnaturalspaciousness,
witharichvarietyofarticulationssuchastremolo,
pizzicato,and
sforzando,aswellasfour‐levelvelocity
switchingandcrossfadingtoensureanaturalrangeof
expression.
Reedinstrumentssuchassaxandoboeweresampled
forextendedtimestoincludenatural‐soundingvibrato
producedbytheplayer.
Thedrumsthataresoimportantfortheoverall
characterofatrackalso
usestereosampling,withlong
samplesthatcapturethenaturaldecayandfour‐level
velocityswitchingandcrossfadingfornatural
dynamics.
Wave sequencing – generating textured tones or
rhythmic sounds
InadditiontosimplyplayingbackthePCMwaveform,
theHD‐1HighDefinitionSynthesizer’soscillatorsalso
supportKorg’sproprietaryWaveSequencing
functionality.
WavesequencingsuccessivelyswitchesthroughPCM
waveforms,crossfadingbetweendifferentsoundsto
createtexturedtonesorrhythmicsounddesigns.Made
famousonKorg’sWAVESTATI ON,wavesequencing
hasbeen
redesignedtobeeveneasierandmore
creativethanever.
Youdon’thavetostopwithsimplyplayingbackPCM
waveformsinsuccession–youcanfreelyspecifythe
timing,length,andpitchofeachwaveform.Thetiming
atwhichwaveformsareswitchedcanevenbe
synchronizedtothetempo.You
canalsouseAMS
(AlternateModulationSources)toobtainsounddesign
possibilitiesthatarecompletelyunthinkablefora
conventionalPCMsynthesizer;forexample,youcan
usetheoutputofanenvelopegeneratortocontrolthe
timingatwhichwaveformsareswitched.
Advanced Vector Synthesis – create not only
sounds, but also sound fields
TheOASYSincludesAdvancedVectorSynthesis,
whichletsyousynthesizespatialsound‐fields.
InCombinationmode,youcanassigneachtimbreto
oneofthefourdirections(up,down,left,orright),and
usethefront‐panelVectorJoysticktocontrolthe
timbrevolumesoreffects.
InProgrammode,youcanuse
thisforrealtimecontrol
overthebalancebetweenoscillators1and2orfor
controllingeffects,givingyouapowerfultooltocreate
soundswithdynamicmovement.
InadditiontocontrollingtheVectorpositionmanually
inrealtime,youcanusethefive‐pointVectorEnvelope
tocontrolvectorsautomatically.Foreach
point,you
canspecifytheVectorposition,howlongtheenvelope
willholdatthepoint,andhowlongitwilltaketo
transitiontothenextpoint.Transitionandholdtimes
canuseeitherabsolutetime,orrhythmicvalues
synchronizedtothesystemtempo.
Ultra high-precision filters are the core of sound
design
Becauseofitspowerandconceptualeaseof
understanding,subtractivesynthesis(thetechniqueof
creatingsoundbyselectivelyremovingportionsfrom
anovertone‐richwaveform)hasbecomethestandard
forsynthesizerstoday.Oneofthemostimportant
componentsofsubtractivesynthesisisthefilter.
ThefiltersectionoftheHD‐1
HighDefinition
synthesizerprovidesfourfilteringtypes(lowpass,
highpass,bandpass,andbandreject)andfourtypes
ofrouting(single,serial,parallel,and24dB).
TheamazingpoweroftheOA(OpenArchitecture)
synthesissystemproducesnaturalandbeautiful
filteringthatdoesnotweakenthesound,delivering
smoothfilter
sweepsandresonance.
TheampoftheOASYScontainsdrivercircuitrythat
coversawiderangeofdistortion,fromthemildand
warmoverdrivecharacteristicofclassicanalog
synthesizers,tothesharpdistortionproducedby
audiosignalfeedback.
Inaddition,thekeytrackinggeneratorallowsthe
filteringtovaryaccordingtothe
keyboardrange;you
canapplysubtlefilteringforconvincingsimulation
sounds,oraggressivefilteringthatproducesdrastic
changesinfilteringasyouplayupordownthe
keyboard.
Dive into an ocean of creative potential – flexible
modulation routing, EG, LFO, and AMS
OASYStakesadvantageofitslavishamountof
availableprocessingpowertoproduceultra‐fastand
ultra‐smoothEGs(envelopegenerators)andLFOs.
EGsallowyoutospecifyhowthesounddevelopsover
time,fromitsonsettoitsend.TheHD‐1High
DefinitionSynthesizerletsyouadjustthecurvature
of
eachEGstage(attack,decay,slope,andrelease),giving
youdetailedcontroloverhowthetoneandvolume
changeovertime,andmakingitpossibletoprogram
anythingfromsimulatedacousticsoundstovintage
synthesizersoundsintheutmostdetail.
TheHD‐1providesacommonLFOforeach
timbre
andtwoLFOsforeachvoice.Youcanchoosefrom
eighteentypesofLFOwaveform,andalsoadjustthe
phaseofthewaveform,thecurve,andthecentervalue
oftheamplitudetocreatedistinctivelymodulated
soundsthathaveneverbeenheardbefore.Sincethe
waveformitselfisgeneratedwith
extremelyhigh
precision,youcancreateperfectlysmoothsweeps.
You’llappreciatetheLFO’stightnessandaccuracynot
justathighspeeds,butalsoforlow‐speedmodulation.
Itgoeswithoutsayingthatyoucanalsoapplykeysync
sothatthesamemodulationoccurseachtimeanoteis
played,
orsynchronizethemodulationspeedtothe
tempotocreaterhythmicaltonalchanges.
Korg’sAMS(AlternateModulationSources)giveyoua
richarrayofmodulationpossibilities,with52different
modulationsourcesyoucanusetocontrolthesoundin
complexways.TheOASYStakesthisclassicKorg
featureevenfurther,via
theAMSMixers.Theseletyou
createevenmoredetailedmodulationdesigns,suchas
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