Industrial Music Electronics HERTZ DONUT MARK III Bruksanvisning

Industrial Music Electronics Inte kategoriserad HERTZ DONUT MARK III

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Sida 1/9
HERTZ DONUT MARK III
OPERATIONS MANUAL • FIRMWARE V1.0
FUNDAMENTALS
 TheHertzDonutMarkIIIisacomplexoscillatorutilizingthenestdigitalsoundsynthesistechniquesfromthe
mid-1980s.Itusesacombinationofphasedistortionandthru-zerofrequencymodulation(FM),andthesynthesis
algorithmprovidesaccesstoanauxiliaryoscillator/outputaswellasasimpliedcontrolforthetotaleffectofthe
modulationbus.Anaudioinputactsasafull-bandwidthsourceformorecomplicatedmodulationsinvolvingexternal
devices.Theunisondetunefunctionoffersbeautifulglasschorusvoicing,andthephasedistortionparametershave
beenchosentoprovidecoherenttimbrewarpingevenunderheavyfrequencymodulation.Themodulecontainsthe
MarkIIImorphingpresetmanagerwhichfacilitatesstorageandperformanceofallmoduleparameters.
GETTING STARTED
 Whenthecoarsetuneissettoitsminimumpositionandthenetuneissettothemiddleposition,thegenerated
frequencywillbe16.35hz(noteC0)withnoexternalvoltagesapplied.Patchinga1voltperoctavetunedsequencer,
quantizer,orkeyboardvoltageintothisjack(suchastheSTILLSONHAMMERorARGOSBLEAK)willchangethe
oscillator’sfrequencytothedesirednote.IfthecontrolvoltageissetsothatC0isequivalenttoavalueof0volts,then
thenotenamesshownontheHertzDonut’sdisplay(andthegeneratedfrequency)willmatchtheinputvoltage.Listen
totheresultsofyourpatchprogrammingatanyofthejacksintheOUTPUTsection.TheMAINoutputwillcontainthe
moststraightforwardexampleofyourprogramming.TheAUXoutputbehaviorisselectableinamenu.TheMIXoutput
isasimpleanalogcombinationofbothoutputs.
SCREEN SAVER
TheHertzDonut’sdisplayisanOLED.Itissettoabrightnesstoprovidethebestbalancebetweenvisibilityandlong
life.TopreservethelifeoftheOLED,itwillturnoffifabuttonorencoderisnotusedfor10minutes.Toturnitbackon,
pressabuttonorturntheencoder.
MK III MENU SYSTEM
 MostfunctionblocksinIndustrialMusicElectronicsmoduleshavehiddenmenusassociatedwiththem.Toaccess
them,holddowntherotaryencoderbuttonandpushtheassociatedbutton.Themenuwillappearonthedisplay.Turn
theencodertoselectthedesiredmenuitem.Pushtheencodertoselecttheitem,andturntheencodertochange
theselecteditem.Pushtheencoderbuttonagaintoenteryourselection.Exitthemenubypressinganyoftheother
buttons.Ifabuttondoesnothaveamenuassociatedwithit,thenthebuttonpresscombinationwillusuallyinvoke
anothershortcutfunction.
CV INPUTS
 MostCVinputsontheHertzDonutacceptfull-scale,
bipolarcontrolvoltageswitharangeof+/-10v.Theresponse
ofthevariousinputsarescaledtoprovideamusically
usefulrangeofmotionwithinthetypicalrangeof+/-5V,
withadditionalreactivityfaroutsideofthisrange.The
attenuvertersuseanonlinearcurvetoallowatypicalcontrol
voltagetosubtlymodulateasmallrangeoftheparameter,or
full-swingtravelwithouttheuseofexternalamplication.
PRIMARY OSCILLATOR
 Thetwofrequencycontrolssetthecoarseandnetuningfrequenciesoftheoscillator.Theirspecicfunctions
maybereversedintheMAIN“GLOBAL”OPTIONSmenubypressingtheEncoderandEXTbutton,scrolldownto
Turn
COUNTER-
CLOCKWISE
to SUBTRACT
Turn CLOCKWISE to ADD CV to parameter
“Attenuverter”
CV Input
the“FreqKnobMode”item.“Normal”assignsthelargeorangeknobtoCoarseTuneandthesmallknobtoFineTune.
“Reverse”assignsthelargeknobtoFineTuneandthesmallknobtoCoarseTune.
 Thefrequencyoftheoscillatorissetasacombinationofthecoarseandnemanualtuningcontrols,thevoltage
presentatthe“1V/Oct”and“CV”jacks,theOCTAVESHIFTparameter(inthemenu),andtheloadedpresetdata(if
ALLPARAMSisenabled.)The“CV”jackacceptsabipolarcontrolvoltage,suchasavibratoLFO.Itisattenuatedby
thenearby“attenuverter”knob.
PHASE DISTORTION
 Theprimaryoscillatorproduces a
sinewavewithnoharmoniccontent
thatismodiedbythe“FOLD”
controltocreateamorecomplicated
waveform.Therearethreewaveform
parametersthatmaybemodiedby
thiscontrol.The“FOLDSELECT”
buttonchooseswhichparameteris
modiedbytheFOLDknob(thecurrentselectionisshownonthedisplay).Intheoscillatormenu,the“CVDestination”
parameterchooseswhichparameterisaffectedbytheFoldCVinput.WhenyouchangetheFOLDSELECT,the
currentknobpositionforthepreviouslyselectedparameteris“frozen”,andyoucanthenusethesameknobtoenter
thevalueforthecurrentlyselectedparameter.Allthreewaveformparametersarestoredinapresetandcanbe
morphedcontinuouslybythepresetmanagerforamode-less,3-dimensionaltimbrespace.Thedisplayshowsagroup
ofthree"virtualsliders"inthecenterthatcommunicatesthecurrentsettingofallthreeparameters.Whenallthree
parametersaresettozero,asinewaveisproduced.
 TherstanddefaultFOLDsettingisthePhaseDistortion,shownas“PDist”onthedisplay.Thismodiesthe
“ramp”thatisusedtogeneratethe
sinewave,addingbreakpointsand
reversals.Thiscausesasmoothlinear
outgrowthofadditionalharmonics,
reminiscentofthesynthesisofsimple
brassinstrumenttones.Pastthe12
o’clockpositionontheknob,therst
harmonicinthesignalbecomesvery
strong,andcreatesaperceived“octave-up”effect.Therestrainedyetcharacterfulnatureofthisparametermeansthat
itperformswithexceptionalclarityevenunderheavyfrequencymodulation.
UMBRAGE
 Thisisthesecondparameter
oftheFOLDSELECTsetting.When
selected,thedisplaywillread“Umbr”
onthetopline.Itisbasedonthe
“fractal”waveformdistortionfrom
previousversionsoftheHertzDonut.
Itcausessmallleaf-andbranch-
likestructurestogrowoutfromtheslopesofthewaveform.Thiscreatesa“fuzz”typeofdistortionwithabiastowards
higherfrequencies,consonantwiththebasefrequencyofthewaveform.
RESONANCE
 ThisisthethirdparameteroftheFOLDSELECTsetting.Whenselected,thedisplaywillread“Reso”onthetop
line.Itisinspiredbythe“virtualresonance”waveformsofhistoricalPhaseDistortionsynthesizers.Itcausesaseriesof
resonantpeakstorisethroughoutthewaveformasthecontrolisincreased.Whenyouroriginalwaveformisclosertoa
simplesinewave,theeffectsoundsjustlikearesonantltersweep.Withmorecomplicatedwaveforms,theresonance
effectsoundsclosertoclassicoscillatorsyncsweeps.Thiseffectislessstableunderheavyfrequencymodulation.

Produktspecifikationer

Varumärke: Industrial Music Electronics
Kategori: Inte kategoriserad
Modell: HERTZ DONUT MARK III

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