Glossary
-
- A -
- Acceleration measurement
- Measurement of dynamic motion or vibrations.
- Acoustic testing
- Tests acoustic behavior of components and systems.
- Acoustics
- Science of sound generation, propagation, and perception.
- Airborne sound transmission
- Transmission of sound waves through air between sources.
- Angle-related analysis
- Angle-related analysis of rotating systems
- Contribution Analysis
- Evaluation of individual sources’ contribution to total vibration or sound
- Crank-angle analysis
- Analysis of crank-angle related signals
- Data acquisition
- Process of collecting and recording measurement data.
- Data analysis
- Analysis of data to gain meaningful insights.
- Data management
- Managing and organizing data for efficient access.
- Dynamic balancing
- Balancing of rotating masses under varying speeds.
- E-mobility
- Mobility concepts based on electric drive systems.
- E-NVH
- NVH analysis specifically for electric vehicles.
- Exterior noise
- Noise emitted by vehicles or machines into the environment.
- FFT
- Mathematical method for frequency analysis of signals.
- FlexRay™, CAN FD
- Digital bus systems for vehicle measurements
- High-resolution tachometer input
- High-resolution tachometer signal input
- Impact hammer measurement
- Acquisition of transfer functions using an impact hammer for modal analysis
- Interior noise
- Acoustic quality and sound behavior inside a vehicle cabin
- Measurement data acquisition
- Collection and recording of technical measurement data.
- Measurement data management
- Management and organization of collected measurement data.
- Modal analysis
- Determination of dynamic properties of structures.
- Noise analysis
- Analysis of noise data to assess sound quality.
- Noise measurement
- Measurement of sound levels using microphones and sensors.
- Octave Band Analysis
- Analysis of sound in standardized frequency bands.
- Operational vibration analysis
- Analysis of vibrations under real operating conditions.
- Order Tracking
- Assignment of vibrations to rotating machine excitations.
- PAK cloud
- Cloud-based platform for managing and analyzing PAK data.
- PAK live
- Real-time display and analysis of measurement data in PAK.
- PAK pass-by
- Module for analyzing pass-by noise in PAK.
- PAK smart recorder
- Portable system for mobile measurement data acquisition.
- PAK Software
- Software for NVH analysis and visualization.
- Pass-by Noise Measurement
- Vehicle passes microphone array for noise assessment.
- Reverberation time
- Time it takes for sound to decay after the source is turned off.
- Ride comfort
- Subjective perception of noise and vibration in a vehicle.
- Rotor imbalance detection
- Detection of rotor imbalances via order analysis
- Shaker excitation
- Structural excitation via shaker systems
- Sound intensity measurement
- Measurement of sound intensity using pressure/velocity sensors
- Sound power measurement
- Determination of sound power per ISO 3740ff
- Sound quality
- Evaluation of the subjective impression of a sound.
- Structural analyses
- Structural dynamics investigations (shaker/hammer)
- Structure-borne sound
- Sound transmitted through solid materials.
- Tire Labelling
- Labeling of tire properties incl. noise classification.
- Torsional vibration analysis
- Analysis of torsional vibrations
- Transfer Path Analysis (TPA)
- Identification of sound transfer paths in structures.
- UN-ECE R117 (Tire Labelling)
- Regulation for tire noise, wet grip and fuel efficiency.
- UN-ECE R138
- Regulation for warning sounds on electric vehicles.
- UN-ECE R51.03
- Regulation for exterior noise testing of cars, trucks, and buses.
- vibration analysis
- Analysis of mechanical vibrations of a system.
- Vibration Measurement
- Measurement of mechanical vibrations using sensors.
- Wind Noise
- Noise caused by airflow around vehicle bodies.