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transcript
Hearing is a fascinating sensation
Prof. Dr.-Ing. Klaus GenuitExecutive director, HEAD acoustics GmbH
Herzogenrath, 23rd September 2011
25 Years HEAD acoustics GmbH
HEAD acoustics GmbH ®
www.head-acoustics.com – 2 – Prof. Dr.-Ing. Klaus Genuit
HEAD acoustics GmbH
• WasfoundedinAugust1986 • Employsmorethan150people • Isamemberof – FVV,DEGA,SAE,ASA,ASJ,AES,VDI,… • Consistsoftwobusinessdivisions – NoiseVibrationHarshness(NVH) • Automotive • IT • Appliance • Officeequipment • EnvironmentalNoise,SoundScape – Telecom • Measurementtechnologyfortelecommunications,electroacousticsandhearingaids • Applicationsforanaloganddigitaltelephony,internettelephony(VoIP),mobile telephonyandhands-freephonesystem • Consultingandresearch
HEAD acoustics GmbH ®
www.head-acoustics.com – 3 – Prof. Dr.-Ing. Klaus Genuit
„Let Your Ears Decide“
• FromthebeginningHEADacousticsislookingforwhatkindofsoundthehumanbeingperceives – Perceptionofsoundindependencyofcontext
• Notonlyvaluesordiagramsareimportantbutthetimesignaloftheleftandrightear
• AllproductsofHEADacousticsarefollowingthisconcept:weneedbinauraltimesignals – Artemis – Prognoise – BTPS,BPCA – HEADVISOr – NoiseMapping
HEAD acoustics GmbH ®
www.head-acoustics.com – 4 – Prof. Dr.-Ing. Klaus Genuit
Integrated System Solutions
SoundDesignTroubleShooting
InteriorNoiseSimulation SoundQuality
JuryTesting
ExteriorNoisePass-byNoise
DataAcquisitionAnalysisPlayback
CustomizedSolutions
HEAD acoustics GmbH ®
www.head-acoustics.com –5– Prof. Dr.-Ing. Klaus Genuit
Psychoacoustics: Physics <-> Psychology
• Objectivedescriptionofhearingeventsdoesnotonlydependonphysicallymeasurableand describableparameterslikeloudness,sharpness,roughness,fluctuationstrength
• butalsoonpsychological,cognitivecomponentsasexperience,expectationandattitude.
• Thismeansthediscipline“Psychoacoustics”isrelatedtootherdisciplinesashearingacoustics, roomandbuildingacoustics,architecture,soundscape,environmentalnoise,psychology,music science,butalsomarketing(productsounddesign)etc.
HEAD acoustics GmbH ®
www.head-acoustics.com –6– Prof. Dr.-Ing. Klaus Genuit
PhysicalAspects
Psycho-acousticalAspects
PsychologicalAspects
DesignAspects
Marketing
Sociology
MechanicalEngineering
AcousticsPhysiologyMusicalTheory
CommunicationsEngineering
Physics
Psychology
ProductSound
Optimization
SQ Aspects
Disciplines
HEAD acoustics GmbH ®
www.head-acoustics.com – 7 – Prof. Dr.-Ing. Klaus Genuit
Adaptivity of Human Hearing
• NVH-SoundQualityisaneverendingstory: – Ifthelevelofonesoundsourceisreducedthenextonecanbeheard – Causedbytheadaptivityofhumanhearingthesensitivityincreases;aquietervehiclemay bemorenoisy – Basedonotherdemands-reductiononweightandemission-newNVHproblemscanbeobserve
Adaptivity of Human Hearing
• NVH-Sound Quality is a never ending story: – If the level of one sound source is reduced the next one can be
heard – Caused by the adaptivity of human hearing the sensitivity
increases; a quieter vehicle may be more noisy – Based on other demands - reduction on weight and emission - new
NVH problems can be observe
Complaints about Engine Noise
Identification and Complaints about
Tire Noise Optimization Tire Noise
Identification and Complaints about
Wind Noise
Identification and Complaints about
Noise of Auxiliaries Optimization Noise of Auxiliaries
„Today, cars are so quiet that you can hear everything.“
Adaptivity of Human Hearing
„Today, cars are so quiet that you can hear everything.“
HEAD acoustics GmbH ®
www.head-acoustics.com –8– Prof. Dr.-Ing. Klaus Genuit
Complexity of Psycho Acoustical Parameters
• Singlenumbersarenotuseful
• Interactionbetweendifferentparametersisunknown – LoudnessSharpness
– roughnessFluctuation
• Itisnotatgeneralpossibletodescribesoundqualityonlybasedonpsychoacousticalparameter – SoundofoneproductasafunctionofN,S,r,Fmaybegood – Anothersoundofadifferentproductwithsameparametersmaybenotbeacceptable
HEAD acoustics GmbH ®
www.head-acoustics.com –9– Prof. Dr.-Ing. Klaus Genuit
General Remarks – Problem of Superposition
Therearenogeneralruleshowtocalculatesoundqualityparametersforasuperposition ofseveralsoundsourcesbasedontheparametersofsinglesoundsources
HEAD acoustics GmbH ®
www.head-acoustics.com –10– Prof. Dr.-Ing. Klaus Genuit
Sound Quality <-> Speech Quality
• Twofieldsofbusiness
• Overlapwithcustomerslikeautomotive
• MobilitymeetsCommunication
HEAD acoustics GmbH ®
www.head-acoustics.com –11– Prof. Dr.-Ing. Klaus Genuit
Future of HEAD acoustics
• Thenext25years:
– ImportanceofSoundQuality? • Automotive->Mobility->Lifestyle • Appliance • Office • WorkingPlaces • SoundScape
– Communication? • Mobility • Lifestyle
HEAD acoustics GmbH ®
www.head-acoustics.com –12– Prof. Dr.-Ing. Klaus Genuit
Automobiles in Change - Replacement of Motives
• Vehicledevelopmentandsocialchangesleadpermanentlytonewqualitycriteria
• Firstpragmatic,functionalcriteria(objectivedata)wereimportant
• Thesecriteriawerereplacedbythecustomerwishesforemotion,excitement,pleasure, comfortwhiledriving
• Duetoarecentsocio-politicalchangeecological-relatedcriteriaareemphasized
• Advertisementisanimportantindicatorfornewmotivesandchangesofrelevantqualitycriteria
HEAD acoustics GmbH ®
www.head-acoustics.com –13– Prof. Dr.-Ing. Klaus Genuit
New Challenges in the Automotive Field
Increase of vehicle classes / diversification
Shortened development cycles
Tightened ecologicalspecifications
Less real prototypesNew engine
concepts
Growing expectations regarding comfort
Vehicle Development
– Needforadvanced,innovativetechniquesandtools – Needforholisticapproachestoguaranteehighestquality
HEAD acoustics GmbH ®
www.head-acoustics.com –14– Prof. Dr.-Ing. Klaus Genuit
Overall Consideration
• SeparationofdifferentNVH-relateddepartmentswithrespecttoconception,planning, development,productionandEoLisnotrecommendable(e.g.NVH,breaks,S&r)
• Sounddesignisimportantwithrespecttothedevelopmentofgoodoverallcharacter – compositioninsteadofreaction
• StyleandCharactercanonlybeachievedbyawell-balanced,harmoniousoverallconcept– ahighoverallcomfortlevelisessentialforhighestperceivedquality
HEAD acoustics GmbH ®
www.head-acoustics.com –15– Prof. Dr.-Ing. Klaus Genuit
NVH – Challenges in Future
• reductionoffuelconsumptionandemissions
• reductionofweight
• Newdrivesystems(acousticsofalternativedrives)
• Increasingimportanceoftire-roadnoise
Newtasks,newfieldscanonlybehandledwithinnovativetools,methodsandconsultingservices: "Fun"factorwillbeimportant "Lifestyle"vehicles Electricpowered(fuelcelltechnology),4electricdrivers(wheelhubmotor),ateachwheelfordriving, braking,recuperation,controldrivingdynamics(ABS,ASr)
HEAD acoustics GmbH ®
www.head-acoustics.com –16– Prof. Dr.-Ing. Klaus Genuit
Sound Development Trends for Electric Vehicles
Sounddevelopmenttrendsfortheelectricvehicle
Developmentofinteriorsoundstakingintoaccountsoundquality,acousticalfeedback,brandimage
Authenticity
Preservation of electric drive
sound
Meeting traditionalsound expectations
Generation of soundsrelated to combustion
engines
New soundsstarting from scratch
Creation of newsounds suitable for
electric cars
HEAD acoustics GmbH ®
www.head-acoustics.com –17– Prof. Dr.-Ing. Klaus Genuit
Holistic Sound Quality Approach
Measurement of NoiseAccording to Human Hearing
Listen to the Sound and Judge
Optimization ofProduct Sound Quality
Find the Source and PathsCausing Noise
Analysis of NoiseAccording to Human Hearing
Measurement of NoiseAccording to Human Hearing
BinauralTechnology
Psycho-acousticAnalyses
BTPA,BPCA
BTPS,Simulations
Realistic Play-back in Lab
or Real Cabins
HEAD acoustics GmbH ®
www.head-acoustics.com –18– Prof. Dr.-Ing. Klaus Genuit
Process of Vehicle Sound EvaluationProcess of Vehicle Sound Evaluation
Action Acceleration, deceleration, brake, Constant
speed,…
Reaction sound and vibration, performance
of the vehicle
This complex interplay cannot be sufficiently
reproduced in laboratory!
Sensation (introspective evaluation)
Matching with experience, expectation, overall impression
Evaluation and Adjustment of the vehicle and sound respectively
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HEAD acoustics GmbH ®
www.head-acoustics.com –19– Prof. Dr.-Ing. Klaus Genuit
Determination of Sound Quality
Real Car
Highestauthenticitywithrespecttotestdriveandassessedvehicleinteriornoises
SoundCar (Stationary Driving Simulator)
•Interactivesimulationofvehicle interiornoiseaswellasvibrations atseatandsteeringwheel•Simulationperformedseparately forengine,windandrollingnoise
„UserInterface“:acceleratorpedal,brakepedal,gearshiftlever,
dashboardinstruments
H3SMobile Driving Simulator
•Simulationofvehicleinteriornoise throughheadphoneswithahigh absorptionofexternalsound(ANC)•Vibrations,drivingdynamicsare providedbytherealbasevehicle
„UserInterface“:acceleratorpedal,brakepedal,gearshiftlever,dashboardinstruments
HEAD acoustics GmbH ®
www.head-acoustics.com –20– Prof. Dr.-Ing. Klaus Genuit
Target Sound Development Using EVE
EVE(*):
ExplorativeVehicleEvaluation
(*)DevelopedbyBrigitteSchulte-Fortkamp,TUBerlin
Prof.Dr.-Ing.KlausGenuit
Test Drive –Evaluation of Vehicle Sound
Acoustical Analysisand Interview Analysis
Modification of Vehicle Sound
Test Drive –Evaluation of New Vehicle Sound
Product Related Target Sound
MobileDriving
Simulator
SoundDesign
Psycho-acoustics
GroundedTheory
MobileDriving
Simulator
HEAD acoustics GmbH ®
www.head-acoustics.com –21– Prof. Dr.-Ing. Klaus Genuit
Open Questions for New Powertrains
• Whatproductsoundsdocustomersprefer?
• Whatkindofsoundsareimportantforcustomers?
• Howtoconsiderthetypicalacousticalorientationknownfromcombustionnoises?
• Shoulditbepossible,thatacustomercanactively/individuallyinfluencethecharacterofthe vehicleinteriornoise?
• Whichnewsoundsariseandmustbeavoidedoremphasized?
• Howtodesignvehicleexteriornoise?(e.g.pedestrianprotection)
HEAD acoustics GmbH ®
www.head-acoustics.com – 22 – Prof. Dr.-Ing. Klaus Genuit
The Revolution Seems to be Inevitable …
ShellScenario„Auto-MobilityinTransition”forGermany(Shell,2009)
Others
Electric
Hybrid
Diesel
Gasoline
Newly-registeredCars
Thisscenarioischaracterizedbyrapidtechnologicalchangeandgreaterdiversificationofpropulsionandfueltechnologies.Butconventionalpropulsionsystemsandfuelswillstillbeplayingakeyrolein2030.
HEAD acoustics GmbH ®
www.head-acoustics.com – 24 – Prof. Dr.-Ing. Klaus Genuit
HEAD acoustics’ Prognosis
2030greatamountofelectricvehicles(newly-registered-cars)
• Expectationofaconsiderablehigherproportionofelectricvehiclesinthefuture• Lesshybridvehiclesexpected
69,6
30,442,7
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30,0
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HEAD acoustics GmbH ®
www.head-acoustics.com –26– Prof. Dr.-Ing. Klaus Genuit
Change of Traffic
PrognosisbyGEcompanyhttp://www.ge.com/thegeshow/electricvehicles/
• Changeoftraditionalmobilityconcepts,trafficfleetcompositionandtravelbehavior • EUroadmap(Whitepaper2011):“Halvetheuseof‘conventionally-fuelled’carsinurbantransport by2030;phasethemoutincitiesby2050”
HEAD acoustics GmbH ®
www.head-acoustics.com – 27 – Prof. Dr.-Ing. Klaus Genuit
Reduction of Costs, Increase of Production
HEAD acoustics GmbH ®
www.head-acoustics.com –28– Prof. Dr.-Ing. Klaus Genuit
The Future is Already Reality
HEAD acoustics GmbH ®
www.head-acoustics.com –29– Prof. Dr.-Ing. Klaus Genuit
Mobility and Communication
• Constantavailabilityisanewtypeofslavery – Mobilityisahumanbasicneedandatthesametimeaneconomicfactor – Butmoreandmorepeoplecannotandwillnotbowtotheideaofamobilesociety
• QuaVadis,mobility? – Thefutureofmobilityisintheintelligentcombinationoftransportationmeans,notagainst, butwitheachother
• Unlimitedmobilityimpliesunlimitedcommunication
• Wherearethelimitsofmobility? – Theissue“mobility”hasanimportantrelevanceinoursociety
FAZ, 13.09.2011
HEAD acoustics GmbH ®
www.head-acoustics.com –30– Prof. Dr.-Ing. Klaus Genuit
What does this mean for HEAD acoustics?
• SoundQualityisaluxuryattributeofproducts • Thatmeans:theimportanceofourcompetencedependsnotonlybytheproducts buthastobeseeninthetotalcontextoflife
• SuccessofHEADacousticsisnotindependentofhumanwell-being
HEAD acoustics GmbH ®
www.head-acoustics.com –31– Prof. Dr.-Ing. Klaus Genuit
futureofhumanbeingandwell-being
mobility communication
HEAD acoustics GmbH ®
www.head-acoustics.com – 32 – Prof. Dr.-Ing. Klaus Genuit
futureofhumanbeingandwell-being
mobility
HEADacoustics
communication
HEAD acoustics GmbH ®
www.head-acoustics.com – 33 – Prof. Dr.-Ing. Klaus Genuit
futureofhumanbeingandwell-being
paradigmchange
evolution
innovation
revolution
HEAD acoustics GmbH ®
www.head-acoustics.com – 34 – Prof. Dr.-Ing. Klaus Genuit
energyresources
socialmobilitytransportation
technologyefficiency
moneyfinances
qualityofenvironmentecology
comfortablelifelifestyle
futureofhumanbeingandwell-being
peacesafetytolerance
educationcommunication&
networkinginformation
healthywell-being
HEAD acoustics GmbH ®
www.head-acoustics.com –35– Prof. Dr.-Ing. Klaus Genuit
futureofhumanbeingandwell-being
evolution
innovation
revolution
HEAD acoustics GmbH ®
www.head-acoustics.com –36– Prof. Dr.-Ing. Klaus Genuit
attitudeofcarmanufactures
customerreactions
infrastructurefuture of
human being and well-being
governmentsincentives
price&reliability spaceatmega-cities
HEAD acoustics GmbH ®
www.head-acoustics.com – 37 – Prof. Dr.-Ing. Klaus Genuit
Potential for E-Vehicles
• Economic-politicalpressureandchangesinconsumerbehavioraffectthefutureofthe automotiveindustry • AccordingtotheinternationalconsultingagencyBooz&Companytheautomotiveindustrymoves inacriticalenvironment.Themainreasonsforthatareontheonehandtheeconomic-political demandsforeco-friendlyvehiclesandontheotherhandthechangingmobilitybehaviorofthe customers.
• Flexibilityandlifestyle: – Thevehicleindeedisandstaysaprestigiousobject,butthepropertyofanown,preferably powerfulvehiclecountslessfortheyoungergeneration – Thenewmobilityconsumeremphasizesflexibilityand(“green”)lifestyle.“Thevehicleshallnot becomeanunemotionalmeansoftransportation.Thusthemanufacturersdeveloprealnew ideasaroundthevehicle.”
HEAD acoustics GmbH ®
www.head-acoustics.com –38– Prof. Dr.-Ing. Klaus Genuit
attitudeofcarmanufactures
customerreactions
infrastructure E-Mobility governmentsincentives
price&reliability spaceatmega-cities
HEAD acoustics GmbH ®
www.head-acoustics.com –39– Prof. Dr.-Ing. Klaus Genuit
New Business
• Combustionengineconsitsonseveralthousandparts,theelectricmotoronlyonsomedozenparts • Combustionengineproducessound/noiseandvibration,theelectricmotoronlysomesound, novibration
• Doweneedexhaust&intactsystems,doweneedpistons?
• Completenewbusinessfieldswillbeneeded
HEAD acoustics GmbH ®
www.head-acoustics.com –40– Prof. Dr.-Ing. Klaus Genuit
Conclusion
• Aftermorethen120yearsdevelopmentofvehicleswewillgetnowabigchangeintheautomotivefield – Newimageofthevehicle:->“green”car – Differentpowertrains – Completenewsounds,insideandoutside – Newtechnologies,newkindofengineering – Newlifestyle • Newideaswithrespecttomobilityandcommunication
• MobilitymeetsCommunication
• Theneedforinterdisciplinarycooperation
• Bigchallengeforthefuture
• Bigchallengeforthepsychacoustics
• BigchallengeforHEADacoustics