1 Torben Holm Pedersen
bt1 The Knowledge Centre DELTA Test-, design-, service-, consulting- education within electronics, software, optics and acoustics. 70 years of experience 270 employees out of which 50% are engineers Annual turnover 283 mill. Kr. 50% export 2,500 customer assignments annually Headquarters in Hørsholm Departments in Odense, Århus, Them, Västerås, and Wales 2
Slide 2 bt1 A3: Scaler til 98% i Advanced. Print anyway. A4: Scaler til 69% i Advanced A4 papir vælges Print anyway Birgit Toft; 09-07-2002
3 Electronics Testing
4 Light & Optics
5 Microelectronics
6 Acoustics & Vibration
Udendørs støj og vibrationer - Flystøj - Lydudbredelse - Støj fra industri - Støjhandlingsplaner - Støj fra havneområder - Trafikstøj - Vindmøller 7
Auralisering Hvordan vil det lyde? Auralisering gør det muligt at høre, hvordan planlagte udendørs lydkilder som f.eks. Vindmøller, jernbaner eller veje vil komme til at lyde i forskellige landskaber. 8
9 Miljøstyrelsens Referencelaboratorium
Building acoustics Laboratory measurements Field measurements Calculations Consulting Projects, investigations 10
Building acoustics laboratory measurements Test facilities Reverberant rooms Kgs. Lyngby y Århus Accredited by DANAK Reg. no. 100 Notified body CPD Notification ID no. 0199 11
Building acoustics laboratory measurements Documentation of Acoustic Properties Labelling Contractor Manufacturer Product Development Design modifications Standardization Round Robin tests 12
13 DTU lyddøde rum
Rumakustik 5 14
Teknisk Audiologi 15
16 Maskinakustik og produktlyd
Warning signals 17
SenseLab Sensoriske målinger mennesket som måleinstrument Lytte-test Forbruger præferencer og meninger Perceptiv karakteristik (lyd-profil) Preference mapping Sammenhængen mellem perceptioin og præference 18
19 SenseLab Staff
20 Optagelse med kunsthoved
Test of fan noise from high-end flat screen TV s 21 Torben Holm Pedersen
22 Listening test with loudspeakers
23 Listening set-up for headphones
24 Panel med 31 trænede assessorer
SenseLabOnline Listening test: Select test methology Experimental design Recruit listening panel Training panel Panel familiarisation Selection of stimuli Instructions Blocking and balancing Calibrate system Stimulus presentation Data gathering Test administration Data post processing Statistical analysis Analysis and interpretation Reporting 25
Rapid-response listening tests Lets you create a test anytime Perform the listening test anywhere Lab, home, different countries with anyone Expert, experienced or consumer assessors anytime As soon as assessors can be scheduled Get the results fast Automated and robust statistical analysis SenseLab handles all the field work 26
27 Landing in SenseLabOnline
28 Building a test
29 Uploading sound files
30 Assessor test GUI for one of the test types
Statistical analysis for customers p-value pvalue of the different effects of the model Adjusted R²=0 0.95 F-value Fvalue of the different effects of the model 0.06 0.909 1000 1170 (df=19) 0.05 800 0.04 600 p-value 0.03 F-value 0.02 0.0221 400 279 (df=14) 0.01 200 57.6 (df=1) 0.00 <0.00001 <0.00001 <0.00001 <0.00001 2.66e-05 <0.00001 0 0.013 (df=1) 5.88 (df=266) 3.35 (df=14) 9.42 (df=19) 5.25 (df=1) Assessor System Sample Replicate Asses ssor:system Asses ssor:sample Syst tem:sample Sampl e:replicate Assessor System Sample Replicate Asses ssor:system Asses ssor:sample Syst tem:sample Sampl e:replicate 31
Main results 100 80 60 40 System Grade 20 0-1: ancho r 0: referencee 1: HD418 2: HD428 3: HD438 4: HD448 5: HD5555 6: HD8000 32 Samples confidence level=0.95
Different domains 33
Different domains 1 Mobile music and communication 34
Different domains 2 Stereo systems and surround sound 35
Different domains 3 Product sound Product sound Product sound 36
Different domains 4 Environmental noise Environmental noise Noise barrier 37
Different domains 5 Environmental noise Room acoustics Environmental noise 38
39 Project partnes and customers
Projekter under Dansk Lydteknologi Færdigt Teltakustik tik I gang Ekstern lyd til elbiler Undervejs (partnere søges) Lyttepanel af hørehæmmede Tydelighed af impulser PA lydkvalitet Andre projektideer er velkomne!!! 40
41 Thank you for your attention!
Sound, Perception and Preference The Filter Model Physical measurement Perceptive measurement Affective measurement Filter 1, the senses Filter 2, non acoustical factors Physical stimulus M1 Perceived stimulus M2 +/- Likes/dislikes M3 Technical Measuring equipment Sensory sensitivity Mood and selectivity Expert panels, Context Consumers, trained listeners Emotion End users Background Expectation ti Objective Subjective 42