Automotive & Transportation Acoustics: Norsonic Instruments for Asia

Norsonic instruments support vehicle pass-by noise testing, interior NVH development, sound power measurement, and transportation infrastructure noise assessment across automotive OEM facilities, component suppliers, proving grounds, and environmental agencies throughout Asia and the Middle East.

Vehicle Pass-By Noise Testing

ISO 362-1: Measurement of noise emitted by accelerating road vehicles (M and N category)
ISO 362-2: Electric and hybrid vehicles with Internal Combustion Engine (NOAEL measurement)
UN Regulation No. 51.03: Uniform provisions concerning noise emissions — type approval requirements
Class 1 measurement for legally defensible type-approval data — Nor145 Sound Level Meter
GPS geo-tagging and NorCloud for synchronized test event logging and post-test analysis
Simultaneous A-weighted and frequency-analysis for tonality assessment

NVH Development & Source Identification

Nor848B Acoustic Camera — exterior source visualization for stationary and slow-moving vehicles; identifies tyre, exhaust, HVAC, and body noise contributions
Nor150 + Nor1290 — ISO 9614 sound intensity scanning for interior path contribution analysis and component ranking
Component sound power measurement (ISO 3745, ISO 9614) for HVAC, motor, and gearbox supplier certification
Structural vibration measurement — seat, floor, and steering column vibration (ISO 8041)

Automotive NVH Applications

Door seal and window acoustic leakage identification — acoustic camera scanning at test frequencies
Powertrain noise characterization — engine order analysis and tonal noise source mapping
Electric vehicle (EV) noise floor and tonal noise assessment for passenger comfort
HVAC system sound power measurement (ISO 9614) for cabin climate control units
Interior panel resonance identification and damping treatment validation

Transportation Infrastructure Noise

Road traffic noise surveys (ISO 11819-1: statistical pass-by method) for Environmental Impact Assessment and road design
Railway pass-by noise measurement (ISO 3095, EN 15610) for rolling stock type approval
Railway wayside monitoring — Nor1545 terminal for long-term freight and passenger service monitoring
Urban roadside monitoring networks — permanent measurement stations with NorCloud data management
Noise barrier effectiveness assessment — before and after insertion loss measurement

Applicable Standards

ISO 362-1/2: Pass-by noise
UN Reg. No. 51.03: Type approval
ISO 9614-1/2: Sound intensity
ISO 3745: Anechoic sound power
ISO 11819-1: Traffic noise survey
ISO 3095: Railway pass-by
ISO 8041: Human vibration
EN 15610: Railway rolling stock

Related Application Guides

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