BK Connect Indoor Pass-by provides a tool for simulating field pass-by performance for a vehicle running on a chassis dynamometer in a hemi-anechoic test chamber according to a range of international standards.
Measuring a vehicle’s interior and exterior noise during operation is far simpler in such a chamber. Eliminating variables such as weather and site variations makes measurements more reproducible, while the stationary vehicle allows more instrumentation.
Simulation of pass-by noise is achieved by placing a row of microphones each side of the test vehicle to represent the relative positions of the standard pass-by microphones during a conventional outdoor test. The vehicle is driven on the chassis dynamometer in the same way as in the standard test.
A typical Indoor Pass-by system is based on the BK Connect data acquisition and analysis platform. The software is combined with LAN‐XI data acquisition hardware (including frame, modules, and front panels), and free-field microphones.
Pass-by SPC gives further possibilities for identifying the major contributions of exterior noise corresponding to the specific sound sources; for example, powertrain, intake/exhaust system and tyres.
Free-field microphone designed for high-precision measurements, requiring high sensitivity with a frequency response of 20 Hz to 20 kHz.
BK Connect® Pass-by SPC helps you investigate the contribution of noise sources such as tyres, engine/motor, exhaust, to the overall pass-by noise.
Volume Velocity Source Measurement Software is part of BK Connect and is designed for quick and easy measurement of acoustic transfer functions.
A cost-efficient and compact LAN-XI DAQ module for high-channel count applications, this module is an ideal building block for large systems - with a DC to 25.6 kHz input range.
CAN Bus Module Type 3058 is a versatile 8-channel 25.6 kHz DAQ module with two independent CAN bus input channels. The ideal solution for automotive NVH applications in the lab or in the field.